diff mbox series

[7/8] arm64: dts: Add Pensando Elba SoC support

Message ID 20210304034141.7062-8-brad@pensando.io
State New
Headers show
Series [1/8] gpio: Add Elba SoC gpio driver for spi cs control | expand

Commit Message

Brad Larson March 4, 2021, 3:41 a.m. UTC
Add Pensando common and Elba SoC specific device nodes
and corresponding binding documentation.

Signed-off-by: Brad Larson <brad@pensando.io>
---
 .../bindings/gpio/pensando,elba-spics.txt     |  24 ++
 .../devicetree/bindings/mmc/cdns,sdhci.yaml   |   2 +-
 .../bindings/spi/cadence-quadspi.txt          |   1 +
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 arch/arm64/boot/dts/Makefile                  |   1 +
 arch/arm64/boot/dts/pensando/Makefile         |   6 +
 arch/arm64/boot/dts/pensando/elba-16core.dtsi | 171 ++++++++++
 .../boot/dts/pensando/elba-asic-common.dtsi   | 113 +++++++
 arch/arm64/boot/dts/pensando/elba-asic.dts    |   8 +
 .../boot/dts/pensando/elba-flash-parts.dtsi   |  80 +++++
 arch/arm64/boot/dts/pensando/elba.dtsi        | 310 ++++++++++++++++++
 11 files changed, 717 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
 create mode 100644 arch/arm64/boot/dts/pensando/Makefile
 create mode 100644 arch/arm64/boot/dts/pensando/elba-16core.dtsi
 create mode 100644 arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
 create mode 100644 arch/arm64/boot/dts/pensando/elba-asic.dts
 create mode 100644 arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
 create mode 100644 arch/arm64/boot/dts/pensando/elba.dtsi

Comments

Serge Semin March 4, 2021, 8:03 a.m. UTC | #1
On Wed, Mar 03, 2021 at 07:41:40PM -0800, Brad Larson wrote:
> Add Pensando common and Elba SoC specific device nodes
> and corresponding binding documentation.

This also needs to be split up into sub-patches seeing these are
unrelated changes like device bindings update, new platform DT file.

Note text-based bindings are deprecated in favor of the DT schemas.
Also note dts needs to pass dtbs_check validation. So all new HW/DT
nodes need to be reflected in the DT-schemas. See [1] for details.

[1] Documentation/devicetree/writing-schema.rst

> 
> Signed-off-by: Brad Larson <brad@pensando.io>
> ---
>  .../bindings/gpio/pensando,elba-spics.txt     |  24 ++
>  .../devicetree/bindings/mmc/cdns,sdhci.yaml   |   2 +-
>  .../bindings/spi/cadence-quadspi.txt          |   1 +
>  .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
>  arch/arm64/boot/dts/Makefile                  |   1 +
>  arch/arm64/boot/dts/pensando/Makefile         |   6 +
>  arch/arm64/boot/dts/pensando/elba-16core.dtsi | 171 ++++++++++
>  .../boot/dts/pensando/elba-asic-common.dtsi   | 113 +++++++
>  arch/arm64/boot/dts/pensando/elba-asic.dts    |   8 +
>  .../boot/dts/pensando/elba-flash-parts.dtsi   |  80 +++++
>  arch/arm64/boot/dts/pensando/elba.dtsi        | 310 ++++++++++++++++++
>  11 files changed, 717 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
>  create mode 100644 arch/arm64/boot/dts/pensando/Makefile
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-16core.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-asic.dts
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba.dtsi
> 
> diff --git a/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt b/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
> new file mode 100644
> index 000000000000..30f5f3275238
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
> @@ -0,0 +1,24 @@
> +Pensando Elba SPI Chip Select Driver
> +
> +The Pensando Elba ASIC provides four SPI bus chip selects
> +
> +Required properties:
> +- compatible: Should be "pensando,elba-spics"
> +- reg: Address range of spics controller
> +- gpio-controller: Marks the device node as gpio controller
> +- #gpio-cells: Must be 2
> +
> +Example:
> +-------
> +spics: spics@307c2468 {
> +        compatible = "pensando,elba-spics";
> +        reg = <0x0 0x307c2468 0x0 0x4>;
> +        gpio-controller;
> +        #gpio-cells = <2>;
> +};
> +
> +&spi0 {
> +        num-cs = <4>;
> +        cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;
> +	...
> +}
> diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> index af7442f73881..645ae696ba24 100644
> --- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> +++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> @@ -122,7 +122,7 @@ unevaluatedProperties: false
>  examples:
>    - |
>      emmc: mmc@5a000000 {

> -        compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
> +        compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc", "pensando,elba-emmc";

Alas it's not enough. New HW compatible strings shall be defined in the
binding schema.

>          reg = <0x5a000000 0x400>;
>          interrupts = <0 78 4>;
>          clocks = <&clk 4>;
> diff --git a/Documentation/devicetree/bindings/spi/cadence-quadspi.txt b/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
> index 8ace832a2d80..dbb346b2b1d7 100644
> --- a/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
> +++ b/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
> @@ -6,6 +6,7 @@ Required properties:
>  	For TI 66AK2G SoC - "ti,k2g-qspi", "cdns,qspi-nor".
>  	For TI AM654 SoC  - "ti,am654-ospi", "cdns,qspi-nor".
>  	For Intel LGM SoC - "intel,lgm-qspi", "cdns,qspi-nor".

> +	For Pensando SoC - "pensando,cdns-qspi".

What about converting this file to DT-schema and adding new HW
bindings in there?

>  - reg : Contains two entries, each of which is a tuple consisting of a
>  	physical address and length. The first entry is the address and
>  	length of the controller register set. The second entry is the
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> index f6064d84a424..9a21d780c5e1 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> @@ -850,6 +850,8 @@ patternProperties:
>      description: Parallax Inc.
>    "^pda,.*":
>      description: Precision Design Associates, Inc.
> +  "^pensando,.*":
> +    description: Pensando Systems Inc.
>    "^pericom,.*":
>      description: Pericom Technology Inc.
>    "^pervasive,.*":
> diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
> index f1173cd93594..c85db0a097fe 100644
> --- a/arch/arm64/boot/dts/Makefile
> +++ b/arch/arm64/boot/dts/Makefile
> @@ -19,6 +19,7 @@ subdir-y += marvell
>  subdir-y += mediatek
>  subdir-y += microchip
>  subdir-y += nvidia
> +subdir-y += pensando
>  subdir-y += qcom
>  subdir-y += realtek
>  subdir-y += renesas
> diff --git a/arch/arm64/boot/dts/pensando/Makefile b/arch/arm64/boot/dts/pensando/Makefile
> new file mode 100644
> index 000000000000..0c2c0961e64a
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/Makefile
> @@ -0,0 +1,6 @@
> +# SPDX-License-Identifier: GPL-2.0
> +dtb-$(CONFIG_ARCH_PENSANDO_ELBA_SOC) += elba-asic.dtb
> +
> +always-y	:= $(dtb-y)
> +subdir-y	:= $(dts-dirs)
> +clean-files	:= *.dtb
> diff --git a/arch/arm64/boot/dts/pensando/elba-16core.dtsi b/arch/arm64/boot/dts/pensando/elba-16core.dtsi
> new file mode 100644
> index 000000000000..b0386864cfec
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-16core.dtsi
> @@ -0,0 +1,171 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/ {
> +	cpus {
> +		#address-cells = <2>;
> +		#size-cells = <0>;
> +
> +		cpu-map {
> +			cluster0 {
> +				core0 { cpu = <&cpu0>; };
> +				core1 { cpu = <&cpu1>; };
> +				core2 { cpu = <&cpu2>; };
> +				core3 { cpu = <&cpu3>; };
> +			};
> +			cluster1 {
> +				core0 { cpu = <&cpu4>; };
> +				core1 { cpu = <&cpu5>; };
> +				core2 { cpu = <&cpu6>; };
> +				core3 { cpu = <&cpu7>; };
> +			};
> +			cluster2 {
> +				core0 { cpu = <&cpu8>; };
> +				core1 { cpu = <&cpu9>; };
> +				core2 { cpu = <&cpu10>; };
> +				core3 { cpu = <&cpu11>; };
> +			};
> +			cluster3 {
> +				core0 { cpu = <&cpu12>; };
> +				core1 { cpu = <&cpu13>; };
> +				core2 { cpu = <&cpu14>; };
> +				core3 { cpu = <&cpu15>; };
> +			};
> +		};
> +
> +		// CLUSTER 0
> +		cpu0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x0>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +		cpu1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x1>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +		cpu2: cpu@2 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x2>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +		cpu3: cpu@3 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x3>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +
> +		l2_0: l2-cache0 {
> +			compatible = "cache";
> +		};
> +
> +		// CLUSTER 1
> +		cpu4: cpu@100 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x100>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +		cpu5: cpu@101 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x101>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +		cpu6: cpu@102 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x102>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +		cpu7: cpu@103 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x103>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +
> +		l2_1: l2-cache1 {
> +			compatible = "cache";
> +		};
> +
> +		// CLUSTER 2
> +		cpu8: cpu@200 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x200>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +		cpu9: cpu@201 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x201>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +		cpu10: cpu@202 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x202>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +		cpu11: cpu@203 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x203>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +
> +		l2_2: l2-cache2 {
> +			compatible = "cache";
> +		};
> +
> +		// CLUSTER 3
> +		cpu12: cpu@300 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x300>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +		cpu13: cpu@301 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x301>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +		cpu14: cpu@302 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x302>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +		cpu15: cpu@303 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x303>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +
> +		l2_3: l2-cache3 {
> +			compatible = "cache";
> +		};
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi b/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
> new file mode 100644
> index 000000000000..9623df208131
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
> @@ -0,0 +1,113 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/ {
> +	model = "Elba ASIC Board";
> +
> +	aliases {
> +		serial0 = &uart0;
> +                spi0 = &spi0;
> +                spi1 = &qspi;
> +	};
> +
> +	chosen {

> +		stdout-path = "serial0:19200n8";

Baudrate of 19200? So sad.(

> +	};
> +};
> +
> +&ahb_clk {
> +	clock-frequency = <400000000>;
> +};
> +
> +&emmc_clk {
> +	clock-frequency = <200000000>;
> +};
> +
> +&flash_clk {
> +	clock-frequency = <400000000>;
> +};
> +
> +&ref_clk {
> +	clock-frequency = <156250000>;
> +};
> +
> +&qspi {
> +	status = "okay";
> +	flash0: mt25q@0 {
> +		compatible = "jdec,spi-nor";
> +		reg = <0>;
> +		spi-max-frequency = <40000000>;
> +		spi-rx-bus-width = <2>;
> +		m25p,fast-read;
> +		cdns,read-delay = <0>;
> +		cdns,tshsl-ns = <0>;
> +		cdns,tsd2d-ns = <0>;
> +		cdns,tchsh-ns = <0>;
> +		cdns,tslch-ns = <0>;
> +	};
> +};
> +
> +&gpio0 {
> +	status = "ok";
> +};
> +
> +&emmc {
> +	bus-width = <8>;
> +	status = "ok";
> +};
> +
> +&wdt0 {
> +	status = "okay";
> +};
> +
> +&i2c0 {
> +	clock-frequency = <100000>;
> +	status = "okay";
> +	tmp451@4c {
> +		compatible = "ti,tmp451";
> +		reg = <0x4c>;
> +	};
> +	tps53659@62 {
> +		compatible = "ti,tps53659";
> +		reg = <0x62>;
> +	};
> +	pcf85263@51 {
> +		compatible = "nxp,pcf85263";
> +		reg = <0x51>;
> +	};
> +};
> +
> +&spi0 {
> +	num-cs = <4>;

> +	cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;

Oh, you've got four peripheral SPI devices connected with only two native CS
available. Hmm, then I don't really know a better way, but just to forget about
the native DW APB CS functionality and activate the direct driving of
all the CS-pins at the moment of the DW APB SPI controller probe
procedure. Then indeed you'll need a custom CS function defined in the DW APB
SPI driver to handle that.

> +	status = "okay";
> +	spi@0 {
> +		compatible = "pensando,cpld";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <0>;
> +	};
> +	spi@1 {
> +		compatible = "pensando,cpld";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <1>;
> +	};
> +	spi@2 {
> +		compatible = "pensando,cpld-rd1173";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <2>;
> +		interrupt-parent = <&porta>;
> +		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +	};
> +	spi@3 {
> +		compatible = "pensando,cpld";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <3>;
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/pensando/elba-asic.dts b/arch/arm64/boot/dts/pensando/elba-asic.dts
> new file mode 100644
> index 000000000000..411c48457006
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-asic.dts
> @@ -0,0 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/dts-v1/;
> +
> +#include "elba.dtsi"
> +#include "elba-16core.dtsi"
> +#include "elba-asic-common.dtsi"
> +#include "elba-flash-parts.dtsi"
> diff --git a/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi b/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
> new file mode 100644
> index 000000000000..1983de1a8403
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
> @@ -0,0 +1,80 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +&flash0 {
> +	partitions {
> +		compatible = "fixed-partitions";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		partition@0 {
> +			label = "flash";
> +			reg = <0x00010000 0x0fff0000>;
> +		};
> +		partition@f0000 {
> +			label = "golduenv";
> +			reg = <0x000f0000 0x00010000>;
> +		};
> +		partition@100000 {
> +			label = "boot0";
> +			reg = <0x00100000 0x00080000>;
> +		};
> +		partition@180000 {
> +			label = "golduboot";
> +			reg = <0x00180000 0x00200000>;
> +		};
> +		partition@400000 {
> +			label = "goldfw";
> +			reg = <0x00400000 0x03c00000>;
> +		};
> +		partition@4010000 {
> +			label = "fwmap";
> +			reg = <0x04010000 0x00020000>;
> +		};
> +		partition@4030000 {
> +			label = "fwsel";
> +			reg = <0x04030000 0x00020000>;
> +		};
> +		partition@4090000 {
> +			label = "bootlog";
> +			reg = <0x04090000 0x00020000>;
> +		};
> +		partition@40b0000 {
> +			label = "panicbuf";
> +			reg = <0x040b0000 0x00020000>;
> +		};
> +		partition@40d0000 {
> +			label = "uservars";
> +			reg = <0x040d0000 0x00020000>;
> +		};
> +		partition@4200000 {
> +			label = "uboota";
> +			reg = <0x04200000 0x00400000>;
> +		};
> +		partition@4600000 {
> +			label = "ubootb";
> +			reg = <0x04600000 0x00400000>;
> +		};
> +		partition@4a00000 {
> +			label = "mainfwa";
> +			reg = <0x04a00000 0x01000000>;
> +		};
> +		partition@5a00000 {
> +			label = "mainfwb";
> +			reg = <0x05a00000 0x01000000>;
> +		};
> +		partition@8000000 {
> +			label = "diagfw";
> +			reg = <0x08000000 0x07fe0000>;
> +		};
> +		partition@ffe0000 {
> +			label = "ubootenv";
> +			reg = <0x0ffe0000 0x00010000>;
> +		};
> +	};
> +};
> +
> +&soc {
> +	panicdump@740b0000 {
> +		compatible = "pensando,capri-crash";
> +		reg = <0x0 0x740b0000 0x0 0x00020000>;
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/pensando/elba.dtsi b/arch/arm64/boot/dts/pensando/elba.dtsi
> new file mode 100644
> index 000000000000..72245e279483
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba.dtsi
> @@ -0,0 +1,310 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019-2021, Pensando Systems Inc.
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include "dt-bindings/interrupt-controller/arm-gic.h"
> +
> +/ {
> +	compatible = "pensando,elba";
> +
> +	interrupt-parent = <&gic>;
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	clocks {
> +		ahb_clk: oscillator0 {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +		};
> +		emmc_clk: oscillator2 {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +		};
> +		flash_clk: oscillator3 {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +		};
> +		ref_clk: oscillator4 {
> +			compatible = "fixed-clock";
> +			#clock-cells = <0>;
> +		};
> +	};
> +
> +	timer {
> +		compatible = "arm,armv8-timer";
> +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) |
> +					IRQ_TYPE_LEVEL_LOW)>;
> +	};
> +
> +	pmu {
> +		compatible = "arm,cortex-a72-pmu";
> +		interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(1) |
> +				IRQ_TYPE_LEVEL_LOW)>;
> +	};
> +
> +	/* Common UIO device for MSI drivers */
> +	uio_penmsi {
> +		compatible = "pensando,uio_penmsi";
> +		name = "uio_penmsi";
> +	};
> +
> +
> +	soc: soc {
> +		compatible = "simple-bus";
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		gic: interrupt-controller@800000 {
> +			compatible = "arm,gic-v3";
> +			#interrupt-cells = <3>;
> +			#address-cells = <2>;
> +			#size-cells = <2>;
> +			ranges;
> +			interrupt-controller;
> +			reg = <0x0 0x800000 0x0 0x200000>,	// GICD
> +			      <0x0 0xa00000 0x0 0x200000>;	// GICR
> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			its: interrupt-controller@820000 {
> +				compatible = "arm,gic-v3-its";
> +				msi-controller;
> +				#msi-cells = <1>;
> +				reg = <0x0 0x820000 0x0 0x10000>;
> +				socionext,synquacer-pre-its =
> +							<0xc00000 0x1000000>;
> +			};
> +		};
> +
> +		/*
> +		 * Until we  know the interrupt domain following this, we
> +		 * are forced to use this is the place where interrupts from
> +		 * PCI converge. In the ideal case, we use one domain higher,
> +		 * where the PCI-ness has been shed.
> +		 */
> +		pxc0_intr: intc@20102200 {
> +			compatible = "pensando,soc-ictlr-csrintr";
> +			interrupt-controller;
> +			reg = <0x0 0x20102200 0x0 0x4>;
> +			#interrupt-cells = <3>;
> +			interrupt-parent = <&gic>;
> +			interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "pxc0_intr";
> +		};
> +
> +		uart0: serial@4800 {
> +			device_type = "serial";
> +			compatible = "ns16550a";
> +			reg = <0x0 0x4800 0x0 0x100>;
> +			clocks = <&ref_clk>;
> +			interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
> +			reg-shift = <2>;
> +			reg-io-width = <4>;
> +		};
> +
> +		qspi: spi@2400 {
> +			compatible = "pensando,cdns-qspi";
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			reg = <0x0 0x2400 0x0 0x400>,
> +			      <0x0 0x7fff0000 0x0 0x1000>;
> +			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&flash_clk>;
> +			cdns,fifo-depth = <1024>;
> +			cdns,fifo-width = <4>;
> +			cdns,trigger-address = <0x7fff0000>;
> +			status = "disabled";
> +		};
> +
> +		gpio0: gpio@4000 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			compatible = "snps,dw-apb-gpio";
> +			reg = <0x0 0x4000 0x0 0x78>;
> +			status = "disabled";
> +
> +			porta: gpio-controller@0 {
> +				compatible = "snps,dw-apb-gpio-port";
> +				reg = <0>;
> +				gpio-controller;
> +				#gpio-cells = <2>;
> +				ngpios = <8>;
> +				interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
> +				interrupt-controller;
> +				interrupt-parent = <&gic>;
> +				#interrupt-cells = <2>;
> +			};
> +			portb: gpio-controller@1 {
> +				compatible = "snps,dw-apb-gpio-port";
> +				reg = <1>;
> +				gpio-controller;
> +				#gpio-cells = <2>;
> +				ngpios = <8>;
> +			};
> +		};
> +
> +		i2c0: i2c@400 {
> +			compatible = "snps,designware-i2c";
> +			reg = <0x0 0x400 0x0 0x100>;
> +			clocks = <&ahb_clk>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			i2c-sda-hold-time-ns = <480>;
> +			snps,sda-timeout-ms = <750>;
> +			interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +
> +		/* UIO device using interrupt line PCIEMAC */
> +		pciemac@20102200 {
> +			#address-cells = <2>;
> +			#size-cells = <2>;
> +			#interrupt-cells = <3>;
> +
> +			compatible = "pensando,uio_pciemac";
> +			register-type = "csr-interrupt";
> +			interrupt-parent = <&pxc0_intr>;
> +			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
> +			reg = <0x0 0x20102200 0x0 0x10>; /* pxc0_intr */
> +
> +			enable_csr_paddr = <0x0 0x20102200 0x0 0x10>;
> +			enable_mask = <(1 << 0)>;
> +		};
> +
> +		/* MSI UIO device 1 */
> +		uio_penmsi1@520000 {
> +			compatible = "pensando,uio_penmsi1";
> +			reg = <0x0 0x520000 0x0 0x10000>;
> +			msi-parent = <&its 0xa>;
> +			num-interrupts = <16>;  /* # MSI interrupts to get */
> +		};
> +

> +		spics: spics@307c2468 {
> +			compatible = "pensando,elba-spics";
> +			reg = <0x0 0x307c2468 0x0 0x4>;
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +		};

So that GPIO-controller is just a single register which provides a way
to toggle the DW APB SPI CS-mode together with their output value.
If so and seeing there are a few more tiny spaces of config
registers added to eMMC, PCI, etc DT node, I suppose all of them
belong to some bigger config space of the SoC. Thus I'd suggest to at
least implement them as part of a System Controller DT node. Then use
that device service to switch on/off corresponding functionality.
See [2] and the rest of added to the kernel DTS files with
syscon-nodes for example.

[2] Documentation/devicetree/bindings/mfd/syscon.yaml

-Sergey

> +
> +		spi0: spi@2800 {
> +			compatible = "pensando,elba-spi";
> +			reg = <0x0 0x2800 0x0 0x100>;
> +			clocks = <&ahb_clk>;
> +			interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			num-cs = <2>;
> +			status = "disabled";
> +		};
> +
> +		wdt0: watchdog@1400 {
> +			compatible = "snps,dw-wdt";
> +			reg = <0x0 0x1400 0x0 0x100>;
> +			clocks = <&ahb_clk>;
> +			interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +		wdt1: watchdog@1800 {
> +			compatible = "snps,dw-wdt";
> +			reg = <0x0 0x1800 0x0 0x100>;
> +			clocks = <&ahb_clk>;
> +			interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +		wdt2: watchdog@1c00 {
> +			compatible = "snps,dw-wdt";
> +			reg = <0x0 0x1c00 0x0 0x100>;
> +			clocks = <&ahb_clk>;
> +			interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +		wdt3: watchdog@2000 {
> +			compatible = "snps,dw-wdt";
> +			reg = <0x0 0x2000 0x0 0x100>;
> +			clocks = <&ahb_clk>;
> +			interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +
> +		emmc: sdio-host-chip@30440000 {
> +			compatible = "pensando,elba-emmc";
> +			clocks = <&emmc_clk>;
> +			interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> +			reg = <0x0 0x30440000 0x0 0x10000
> +			       0x0 0x30480044 0x0 0x4>;
> +			cdns,phy-input-delay-sd-highspeed = <0x4>;
> +			cdns,phy-input-delay-legacy = <0x4>;
> +			cdns,phy-input-delay-sd-uhs-sdr50 = <0x6>;
> +			cdns,phy-input-delay-sd-uhs-ddr50 = <0x16>;
> +			cdns,mmc-ddr-1_8v;
> +			status = "disabled";
> +		} ;
> +
> +		pcie@307c2480 {
> +			compatible = "pensando,pcie";
> +			reg = <0x0 0x307c2480 0x0 0x4   /* MS CFG_WDT */
> +			       0x0 0x00001400 0x0 0x10  /* WDT0 */
> +			       0x0 0x20000000 0x0 0x00380000>; /* PXB Base */
> +		};
> +
> +		panic: panicdump@0 {
> +			compatible = "pensando,pen-crash";
> +			status = "disabled";
> +		};
> +
> +		bsm@307c2080 {
> +			compatible = "pensando,bsm";
> +			reg = <0x0 0x307c2080 0x0 0x4>;
> +		};
> +	};
> +	mnet0: mnet0 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x0>;
> +	};
> +	mnet1: mnet1 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x1>;
> +	};
> +	mnet2: mnet2 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x2>;
> +	};
> +	mnet3: mnet3 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x3>;
> +	};
> +	mnet4: mnet4 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x4>;
> +	};
> +	mnet5: mnet5 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x5>;
> +	};
> +	mnet6: mnet6 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x6>;
> +	};
> +	mnet7: mnet7 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x7>;
> +	};
> +	mnet8: mnet8 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x8>;
> +	};
> +	mnet9: mnet9 {
> +		compatible = "pensando,mnet";
> +		msi-parent = <&its 0x9>;
> +	};
> +};
> -- 
> 2.17.1
>
Linus Walleij March 4, 2021, 8:51 a.m. UTC | #2
On Thu, Mar 4, 2021 at 4:42 AM Brad Larson <brad@pensando.io> wrote:

> Add Pensando common and Elba SoC specific device nodes
> and corresponding binding documentation.
>
> Signed-off-by: Brad Larson <brad@pensando.io>
(...)
>  .../bindings/gpio/pensando,elba-spics.txt     |  24 ++

Please use YAML schema for this.

See Documentation/devicetree/writing-schema.rst
for instructions, you need to install some python pip packages
to test your schema.

Yours,
Linus Walleij
Rob Herring (Arm) March 4, 2021, 8:47 p.m. UTC | #3
On Wed, 03 Mar 2021 19:41:40 -0800, Brad Larson wrote:
> Add Pensando common and Elba SoC specific device nodes
> and corresponding binding documentation.
> 
> Signed-off-by: Brad Larson <brad@pensando.io>
> ---
>  .../bindings/gpio/pensando,elba-spics.txt     |  24 ++
>  .../devicetree/bindings/mmc/cdns,sdhci.yaml   |   2 +-
>  .../bindings/spi/cadence-quadspi.txt          |   1 +
>  .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
>  arch/arm64/boot/dts/Makefile                  |   1 +
>  arch/arm64/boot/dts/pensando/Makefile         |   6 +
>  arch/arm64/boot/dts/pensando/elba-16core.dtsi | 171 ++++++++++
>  .../boot/dts/pensando/elba-asic-common.dtsi   | 113 +++++++
>  arch/arm64/boot/dts/pensando/elba-asic.dts    |   8 +
>  .../boot/dts/pensando/elba-flash-parts.dtsi   |  80 +++++
>  arch/arm64/boot/dts/pensando/elba.dtsi        | 310 ++++++++++++++++++
>  11 files changed, 717 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
>  create mode 100644 arch/arm64/boot/dts/pensando/Makefile
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-16core.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-asic.dts
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba.dtsi
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mmc/cdns,sdhci.example.dt.yaml: mmc@5a000000: compatible: ['socionext,uniphier-sd4hc', 'cdns,sd4hc', 'pensando,elba-emmc'] is too long
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mmc/cdns,sdhci.example.dt.yaml: mmc@5a000000: compatible: Additional items are not allowed ('pensando,elba-emmc' was unexpected)
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml

See https://patchwork.ozlabs.org/patch/1447072

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.
Krzysztof Kozlowski March 5, 2021, 11:22 a.m. UTC | #4
On 04/03/2021 04:41, Brad Larson wrote:
> Add Pensando common and Elba SoC specific device nodes
> and corresponding binding documentation.
> 
> Signed-off-by: Brad Larson <brad@pensando.io>
> ---
>  .../bindings/gpio/pensando,elba-spics.txt     |  24 ++
>  .../devicetree/bindings/mmc/cdns,sdhci.yaml   |   2 +-
>  .../bindings/spi/cadence-quadspi.txt          |   1 +
>  .../devicetree/bindings/vendor-prefixes.yaml  |   2 +

Hi,

dt-bindings go always to separate patches, at beginning of patchset.

>  arch/arm64/boot/dts/Makefile                  |   1 +
>  arch/arm64/boot/dts/pensando/Makefile         |   6 +
>  arch/arm64/boot/dts/pensando/elba-16core.dtsi | 171 ++++++++++
>  .../boot/dts/pensando/elba-asic-common.dtsi   | 113 +++++++
>  arch/arm64/boot/dts/pensando/elba-asic.dts    |   8 +
>  .../boot/dts/pensando/elba-flash-parts.dtsi   |  80 +++++
>  arch/arm64/boot/dts/pensando/elba.dtsi        | 310 ++++++++++++++++++

You need the board/vendor YAML file. See:
Documentation/devicetree/bindings/arm/

>  11 files changed, 717 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
>  create mode 100644 arch/arm64/boot/dts/pensando/Makefile
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-16core.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-asic.dts
>  create mode 100644 arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
>  create mode 100644 arch/arm64/boot/dts/pensando/elba.dtsi
> 
> diff --git a/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt b/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
> new file mode 100644
> index 000000000000..30f5f3275238
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
> @@ -0,0 +1,24 @@
> +Pensando Elba SPI Chip Select Driver
> +
> +The Pensando Elba ASIC provides four SPI bus chip selects
> +
> +Required properties:
> +- compatible: Should be "pensando,elba-spics"
> +- reg: Address range of spics controller
> +- gpio-controller: Marks the device node as gpio controller
> +- #gpio-cells: Must be 2
> +
> +Example:
> +-------
> +spics: spics@307c2468 {
> +        compatible = "pensando,elba-spics";
> +        reg = <0x0 0x307c2468 0x0 0x4>;
> +        gpio-controller;
> +        #gpio-cells = <2>;
> +};
> +
> +&spi0 {
> +        num-cs = <4>;
> +        cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;
> +	...
> +}
> diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> index af7442f73881..645ae696ba24 100644
> --- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> +++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
> @@ -122,7 +122,7 @@ unevaluatedProperties: false
>  examples:
>    - |
>      emmc: mmc@5a000000 {
> -        compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
> +        compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc", "pensando,elba-emmc";

Why are you doing this?

>          reg = <0x5a000000 0x400>;
>          interrupts = <0 78 4>;
>          clocks = <&clk 4>;
> diff --git a/Documentation/devicetree/bindings/spi/cadence-quadspi.txt b/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
> index 8ace832a2d80..dbb346b2b1d7 100644
> --- a/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
> +++ b/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
> @@ -6,6 +6,7 @@ Required properties:
>  	For TI 66AK2G SoC - "ti,k2g-qspi", "cdns,qspi-nor".
>  	For TI AM654 SoC  - "ti,am654-ospi", "cdns,qspi-nor".
>  	For Intel LGM SoC - "intel,lgm-qspi", "cdns,qspi-nor".
> +	For Pensando SoC - "pensando,cdns-qspi".
>  - reg : Contains two entries, each of which is a tuple consisting of a
>  	physical address and length. The first entry is the address and
>  	length of the controller register set. The second entry is the
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> index f6064d84a424..9a21d780c5e1 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
> @@ -850,6 +850,8 @@ patternProperties:
>      description: Parallax Inc.
>    "^pda,.*":
>      description: Precision Design Associates, Inc.
> +  "^pensando,.*":
> +    description: Pensando Systems Inc.
>    "^pericom,.*":
>      description: Pericom Technology Inc.
>    "^pervasive,.*":
> diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
> index f1173cd93594..c85db0a097fe 100644
> --- a/arch/arm64/boot/dts/Makefile
> +++ b/arch/arm64/boot/dts/Makefile
> @@ -19,6 +19,7 @@ subdir-y += marvell
>  subdir-y += mediatek
>  subdir-y += microchip
>  subdir-y += nvidia
> +subdir-y += pensando
>  subdir-y += qcom
>  subdir-y += realtek
>  subdir-y += renesas
> diff --git a/arch/arm64/boot/dts/pensando/Makefile b/arch/arm64/boot/dts/pensando/Makefile
> new file mode 100644
> index 000000000000..0c2c0961e64a
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/Makefile
> @@ -0,0 +1,6 @@
> +# SPDX-License-Identifier: GPL-2.0
> +dtb-$(CONFIG_ARCH_PENSANDO_ELBA_SOC) += elba-asic.dtb
> +
> +always-y	:= $(dtb-y)
> +subdir-y	:= $(dts-dirs)
> +clean-files	:= *.dtb
> diff --git a/arch/arm64/boot/dts/pensando/elba-16core.dtsi b/arch/arm64/boot/dts/pensando/elba-16core.dtsi
> new file mode 100644
> index 000000000000..b0386864cfec
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-16core.dtsi
> @@ -0,0 +1,171 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/ {
> +	cpus {
> +		#address-cells = <2>;
> +		#size-cells = <0>;
> +
> +		cpu-map {
> +			cluster0 {
> +				core0 { cpu = <&cpu0>; };
> +				core1 { cpu = <&cpu1>; };
> +				core2 { cpu = <&cpu2>; };
> +				core3 { cpu = <&cpu3>; };
> +			};
> +			cluster1 {
> +				core0 { cpu = <&cpu4>; };
> +				core1 { cpu = <&cpu5>; };
> +				core2 { cpu = <&cpu6>; };
> +				core3 { cpu = <&cpu7>; };
> +			};
> +			cluster2 {
> +				core0 { cpu = <&cpu8>; };
> +				core1 { cpu = <&cpu9>; };
> +				core2 { cpu = <&cpu10>; };
> +				core3 { cpu = <&cpu11>; };
> +			};
> +			cluster3 {
> +				core0 { cpu = <&cpu12>; };
> +				core1 { cpu = <&cpu13>; };
> +				core2 { cpu = <&cpu14>; };
> +				core3 { cpu = <&cpu15>; };
> +			};
> +		};
> +
> +		// CLUSTER 0
> +		cpu0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x0>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +		cpu1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x1>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +		cpu2: cpu@2 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x2>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +		cpu3: cpu@3 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x3>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_0>;
> +		};
> +
> +		l2_0: l2-cache0 {
> +			compatible = "cache";
> +		};
> +
> +		// CLUSTER 1
> +		cpu4: cpu@100 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x100>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +		cpu5: cpu@101 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x101>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +		cpu6: cpu@102 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x102>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +		cpu7: cpu@103 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x103>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_1>;
> +		};
> +
> +		l2_1: l2-cache1 {
> +			compatible = "cache";
> +		};
> +
> +		// CLUSTER 2
> +		cpu8: cpu@200 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x200>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +		cpu9: cpu@201 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x201>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +		cpu10: cpu@202 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x202>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +		cpu11: cpu@203 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x203>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_2>;
> +		};
> +
> +		l2_2: l2-cache2 {
> +			compatible = "cache";
> +		};
> +
> +		// CLUSTER 3
> +		cpu12: cpu@300 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x300>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +		cpu13: cpu@301 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x301>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +		cpu14: cpu@302 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x302>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +		cpu15: cpu@303 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a72", "arm,armv8";
> +			reg = <0 0x303>;
> +			enable-method = "spin-table";
> +			next-level-cache = <&l2_3>;
> +		};
> +
> +		l2_3: l2-cache3 {
> +			compatible = "cache";
> +		};

Run the dtbs_check and build dtbs with W=1 - no warnings are usually
expected.

> +	};
> +};
> diff --git a/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi b/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
> new file mode 100644
> index 000000000000..9623df208131
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
> @@ -0,0 +1,113 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/ {
> +	model = "Elba ASIC Board";
> +
> +	aliases {
> +		serial0 = &uart0;
> +                spi0 = &spi0;
> +                spi1 = &qspi;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:19200n8";
> +	};
> +};
> +
> +&ahb_clk {
> +	clock-frequency = <400000000>;
> +};
> +
> +&emmc_clk {
> +	clock-frequency = <200000000>;
> +};
> +
> +&flash_clk {
> +	clock-frequency = <400000000>;
> +};
> +
> +&ref_clk {
> +	clock-frequency = <156250000>;
> +};
> +
> +&qspi {
> +	status = "okay";
> +	flash0: mt25q@0 {
> +		compatible = "jdec,spi-nor";
> +		reg = <0>;
> +		spi-max-frequency = <40000000>;
> +		spi-rx-bus-width = <2>;
> +		m25p,fast-read;
> +		cdns,read-delay = <0>;
> +		cdns,tshsl-ns = <0>;
> +		cdns,tsd2d-ns = <0>;
> +		cdns,tchsh-ns = <0>;
> +		cdns,tslch-ns = <0>;
> +	};
> +};
> +
> +&gpio0 {
> +	status = "ok";
> +};
> +
> +&emmc {
> +	bus-width = <8>;
> +	status = "ok";
> +};
> +
> +&wdt0 {
> +	status = "okay";
> +};
> +
> +&i2c0 {
> +	clock-frequency = <100000>;
> +	status = "okay";
> +	tmp451@4c {

Generic node name needed, like in devicetree spec.

> +		compatible = "ti,tmp451";
> +		reg = <0x4c>;
> +	};

Here and everywhere else - line break between each node.

> +	tps53659@62 {
> +		compatible = "ti,tps53659";
> +		reg = <0x62>;
> +	};
> +	pcf85263@51 {
> +		compatible = "nxp,pcf85263";
> +		reg = <0x51>;
> +	};
> +};
> +
> +&spi0 {
> +	num-cs = <4>;
> +	cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;
> +	status = "okay";
> +	spi@0 {
> +		compatible = "pensando,cpld";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <0>;
> +	};
> +	spi@1 {
> +		compatible = "pensando,cpld";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <1>;
> +	};
> +	spi@2 {
> +		compatible = "pensando,cpld-rd1173";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <2>;
> +		interrupt-parent = <&porta>;
> +		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +	};
> +	spi@3 {
> +		compatible = "pensando,cpld";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		spi-max-frequency = <12000000>;
> +		reg = <3>;
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/pensando/elba-asic.dts b/arch/arm64/boot/dts/pensando/elba-asic.dts
> new file mode 100644
> index 000000000000..411c48457006
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-asic.dts
> @@ -0,0 +1,8 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +/dts-v1/;
> +
> +#include "elba.dtsi"
> +#include "elba-16core.dtsi"
> +#include "elba-asic-common.dtsi"
> +#include "elba-flash-parts.dtsi"
> diff --git a/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi b/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
> new file mode 100644
> index 000000000000..1983de1a8403
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
> @@ -0,0 +1,80 @@
> +// SPDX-License-Identifier: GPL-2.0
> +
> +&flash0 {
> +	partitions {
> +		compatible = "fixed-partitions";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		partition@0 {
> +			label = "flash";
> +			reg = <0x00010000 0x0fff0000>;
> +		};
> +		partition@f0000 {
> +			label = "golduenv";
> +			reg = <0x000f0000 0x00010000>;
> +		};
> +		partition@100000 {
> +			label = "boot0";
> +			reg = <0x00100000 0x00080000>;
> +		};
> +		partition@180000 {
> +			label = "golduboot";
> +			reg = <0x00180000 0x00200000>;
> +		};
> +		partition@400000 {
> +			label = "goldfw";
> +			reg = <0x00400000 0x03c00000>;
> +		};
> +		partition@4010000 {
> +			label = "fwmap";
> +			reg = <0x04010000 0x00020000>;
> +		};
> +		partition@4030000 {
> +			label = "fwsel";
> +			reg = <0x04030000 0x00020000>;
> +		};
> +		partition@4090000 {
> +			label = "bootlog";
> +			reg = <0x04090000 0x00020000>;

No leading 0 in address and size.

> +		};
> +		partition@40b0000 {
> +			label = "panicbuf";
> +			reg = <0x040b0000 0x00020000>;
> +		};
> +		partition@40d0000 {
> +			label = "uservars";
> +			reg = <0x040d0000 0x00020000>;
> +		};
> +		partition@4200000 {
> +			label = "uboota";
> +			reg = <0x04200000 0x00400000>;
> +		};
> +		partition@4600000 {
> +			label = "ubootb";
> +			reg = <0x04600000 0x00400000>;
> +		};
> +		partition@4a00000 {
> +			label = "mainfwa";
> +			reg = <0x04a00000 0x01000000>;
> +		};
> +		partition@5a00000 {
> +			label = "mainfwb";
> +			reg = <0x05a00000 0x01000000>;
> +		};
> +		partition@8000000 {
> +			label = "diagfw";
> +			reg = <0x08000000 0x07fe0000>;
> +		};
> +		partition@ffe0000 {
> +			label = "ubootenv";
> +			reg = <0x0ffe0000 0x00010000>;
> +		};
> +	};
> +};
> +
> +&soc {
> +	panicdump@740b0000 {
> +		compatible = "pensando,capri-crash";
> +		reg = <0x0 0x740b0000 0x0 0x00020000>;
> +	};
> +};
> diff --git a/arch/arm64/boot/dts/pensando/elba.dtsi b/arch/arm64/boot/dts/pensando/elba.dtsi
> new file mode 100644
> index 000000000000..72245e279483
> --- /dev/null
> +++ b/arch/arm64/boot/dts/pensando/elba.dtsi
> @@ -0,0 +1,310 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019-2021, Pensando Systems Inc.
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.

You have SPDX header. No boiler plate.

OK, I stopped...

Best regards,
Krzysztof
Brad Larson March 29, 2021, 12:54 a.m. UTC | #5
On Thu, Mar 4, 2021 at 12:52 AM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> On Thu, Mar 4, 2021 at 4:42 AM Brad Larson <brad@pensando.io> wrote:
>
> > Add Pensando common and Elba SoC specific device nodes
> > and corresponding binding documentation.
> >
> > Signed-off-by: Brad Larson <brad@pensando.io>
> (...)
> >  .../bindings/gpio/pensando,elba-spics.txt     |  24 ++
>
> Please use YAML schema for this.

In patchset v2 changed to YAML schema and passed dt_binding_check and
dtbs_check.
Brad Larson March 29, 2021, 1:07 a.m. UTC | #6
On Thu, Mar 4, 2021 at 12:03 AM Serge Semin <fancer.lancer@gmail.com> wrote:
>

> On Wed, Mar 03, 2021 at 07:41:40PM -0800, Brad Larson wrote:

> > Add Pensando common and Elba SoC specific device nodes

> > and corresponding binding documentation.

>

> This also needs to be split up into sub-patches seeing these are

> unrelated changes like device bindings update, new platform DT file.


In patchset v2 this is split into sub-patches.

> What about converting this file to DT-schema and adding new HW

> bindings in there?


Converted existing file devicetree/bindings/spi/cadence-quadspi.txt to
YAML schema.

> > +&spi0 {

> > +     num-cs = <4>;

>

> > +     cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;

>

> Oh, you've got four peripheral SPI devices connected with only two native CS

> available. Hmm, then I don't really know a better way, but just to forget about

> the native DW APB CS functionality and activate the direct driving of

> all the CS-pins at the moment of the DW APB SPI controller probe

> procedure. Then indeed you'll need a custom CS function defined in the DW APB

> SPI driver to handle that.


Yes, with an Elba SoC specific gpio driver.

> So that GPIO-controller is just a single register which provides a way

> to toggle the DW APB SPI CS-mode together with their output value.

> If so and seeing there are a few more tiny spaces of config

> registers added to eMMC, PCI, etc DT node, I suppose all of them

> belong to some bigger config space of the SoC. Thus I'd suggest to at

> least implement them as part of a System Controller DT node. Then use

> that device service to switch on/off corresponding functionality.

> See [2] and the rest of added to the kernel DTS files with

> syscon-nodes for example.

>

> [2] Documentation/devicetree/bindings/mfd/syscon.yaml


To us it was more understandable to implement a standard gpio driver
for the spi chip-selects.
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt b/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
new file mode 100644
index 000000000000..30f5f3275238
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/pensando,elba-spics.txt
@@ -0,0 +1,24 @@ 
+Pensando Elba SPI Chip Select Driver
+
+The Pensando Elba ASIC provides four SPI bus chip selects
+
+Required properties:
+- compatible: Should be "pensando,elba-spics"
+- reg: Address range of spics controller
+- gpio-controller: Marks the device node as gpio controller
+- #gpio-cells: Must be 2
+
+Example:
+-------
+spics: spics@307c2468 {
+        compatible = "pensando,elba-spics";
+        reg = <0x0 0x307c2468 0x0 0x4>;
+        gpio-controller;
+        #gpio-cells = <2>;
+};
+
+&spi0 {
+        num-cs = <4>;
+        cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;
+	...
+}
diff --git a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
index af7442f73881..645ae696ba24 100644
--- a/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/cdns,sdhci.yaml
@@ -122,7 +122,7 @@  unevaluatedProperties: false
 examples:
   - |
     emmc: mmc@5a000000 {
-        compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
+        compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc", "pensando,elba-emmc";
         reg = <0x5a000000 0x400>;
         interrupts = <0 78 4>;
         clocks = <&clk 4>;
diff --git a/Documentation/devicetree/bindings/spi/cadence-quadspi.txt b/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
index 8ace832a2d80..dbb346b2b1d7 100644
--- a/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
+++ b/Documentation/devicetree/bindings/spi/cadence-quadspi.txt
@@ -6,6 +6,7 @@  Required properties:
 	For TI 66AK2G SoC - "ti,k2g-qspi", "cdns,qspi-nor".
 	For TI AM654 SoC  - "ti,am654-ospi", "cdns,qspi-nor".
 	For Intel LGM SoC - "intel,lgm-qspi", "cdns,qspi-nor".
+	For Pensando SoC - "pensando,cdns-qspi".
 - reg : Contains two entries, each of which is a tuple consisting of a
 	physical address and length. The first entry is the address and
 	length of the controller register set. The second entry is the
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index f6064d84a424..9a21d780c5e1 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -850,6 +850,8 @@  patternProperties:
     description: Parallax Inc.
   "^pda,.*":
     description: Precision Design Associates, Inc.
+  "^pensando,.*":
+    description: Pensando Systems Inc.
   "^pericom,.*":
     description: Pericom Technology Inc.
   "^pervasive,.*":
diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
index f1173cd93594..c85db0a097fe 100644
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -19,6 +19,7 @@  subdir-y += marvell
 subdir-y += mediatek
 subdir-y += microchip
 subdir-y += nvidia
+subdir-y += pensando
 subdir-y += qcom
 subdir-y += realtek
 subdir-y += renesas
diff --git a/arch/arm64/boot/dts/pensando/Makefile b/arch/arm64/boot/dts/pensando/Makefile
new file mode 100644
index 000000000000..0c2c0961e64a
--- /dev/null
+++ b/arch/arm64/boot/dts/pensando/Makefile
@@ -0,0 +1,6 @@ 
+# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_PENSANDO_ELBA_SOC) += elba-asic.dtb
+
+always-y	:= $(dtb-y)
+subdir-y	:= $(dts-dirs)
+clean-files	:= *.dtb
diff --git a/arch/arm64/boot/dts/pensando/elba-16core.dtsi b/arch/arm64/boot/dts/pensando/elba-16core.dtsi
new file mode 100644
index 000000000000..b0386864cfec
--- /dev/null
+++ b/arch/arm64/boot/dts/pensando/elba-16core.dtsi
@@ -0,0 +1,171 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 { cpu = <&cpu0>; };
+				core1 { cpu = <&cpu1>; };
+				core2 { cpu = <&cpu2>; };
+				core3 { cpu = <&cpu3>; };
+			};
+			cluster1 {
+				core0 { cpu = <&cpu4>; };
+				core1 { cpu = <&cpu5>; };
+				core2 { cpu = <&cpu6>; };
+				core3 { cpu = <&cpu7>; };
+			};
+			cluster2 {
+				core0 { cpu = <&cpu8>; };
+				core1 { cpu = <&cpu9>; };
+				core2 { cpu = <&cpu10>; };
+				core3 { cpu = <&cpu11>; };
+			};
+			cluster3 {
+				core0 { cpu = <&cpu12>; };
+				core1 { cpu = <&cpu13>; };
+				core2 { cpu = <&cpu14>; };
+				core3 { cpu = <&cpu15>; };
+			};
+		};
+
+		// CLUSTER 0
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x0>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_0>;
+		};
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x1>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_0>;
+		};
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x2>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_0>;
+		};
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x3>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_0>;
+		};
+
+		l2_0: l2-cache0 {
+			compatible = "cache";
+		};
+
+		// CLUSTER 1
+		cpu4: cpu@100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x100>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_1>;
+		};
+		cpu5: cpu@101 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x101>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_1>;
+		};
+		cpu6: cpu@102 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x102>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_1>;
+		};
+		cpu7: cpu@103 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x103>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_1>;
+		};
+
+		l2_1: l2-cache1 {
+			compatible = "cache";
+		};
+
+		// CLUSTER 2
+		cpu8: cpu@200 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x200>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_2>;
+		};
+		cpu9: cpu@201 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x201>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_2>;
+		};
+		cpu10: cpu@202 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x202>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_2>;
+		};
+		cpu11: cpu@203 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x203>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_2>;
+		};
+
+		l2_2: l2-cache2 {
+			compatible = "cache";
+		};
+
+		// CLUSTER 3
+		cpu12: cpu@300 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x300>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_3>;
+		};
+		cpu13: cpu@301 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x301>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_3>;
+		};
+		cpu14: cpu@302 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x302>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_3>;
+		};
+		cpu15: cpu@303 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a72", "arm,armv8";
+			reg = <0 0x303>;
+			enable-method = "spin-table";
+			next-level-cache = <&l2_3>;
+		};
+
+		l2_3: l2-cache3 {
+			compatible = "cache";
+		};
+	};
+};
diff --git a/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi b/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
new file mode 100644
index 000000000000..9623df208131
--- /dev/null
+++ b/arch/arm64/boot/dts/pensando/elba-asic-common.dtsi
@@ -0,0 +1,113 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+	model = "Elba ASIC Board";
+
+	aliases {
+		serial0 = &uart0;
+                spi0 = &spi0;
+                spi1 = &qspi;
+	};
+
+	chosen {
+		stdout-path = "serial0:19200n8";
+	};
+};
+
+&ahb_clk {
+	clock-frequency = <400000000>;
+};
+
+&emmc_clk {
+	clock-frequency = <200000000>;
+};
+
+&flash_clk {
+	clock-frequency = <400000000>;
+};
+
+&ref_clk {
+	clock-frequency = <156250000>;
+};
+
+&qspi {
+	status = "okay";
+	flash0: mt25q@0 {
+		compatible = "jdec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+		spi-rx-bus-width = <2>;
+		m25p,fast-read;
+		cdns,read-delay = <0>;
+		cdns,tshsl-ns = <0>;
+		cdns,tsd2d-ns = <0>;
+		cdns,tchsh-ns = <0>;
+		cdns,tslch-ns = <0>;
+	};
+};
+
+&gpio0 {
+	status = "ok";
+};
+
+&emmc {
+	bus-width = <8>;
+	status = "ok";
+};
+
+&wdt0 {
+	status = "okay";
+};
+
+&i2c0 {
+	clock-frequency = <100000>;
+	status = "okay";
+	tmp451@4c {
+		compatible = "ti,tmp451";
+		reg = <0x4c>;
+	};
+	tps53659@62 {
+		compatible = "ti,tps53659";
+		reg = <0x62>;
+	};
+	pcf85263@51 {
+		compatible = "nxp,pcf85263";
+		reg = <0x51>;
+	};
+};
+
+&spi0 {
+	num-cs = <4>;
+	cs-gpios = <&spics 0 0>, <&spics 1 0>, <&porta 1 0>, <&porta 7 0>;
+	status = "okay";
+	spi@0 {
+		compatible = "pensando,cpld";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <12000000>;
+		reg = <0>;
+	};
+	spi@1 {
+		compatible = "pensando,cpld";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <12000000>;
+		reg = <1>;
+	};
+	spi@2 {
+		compatible = "pensando,cpld-rd1173";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <12000000>;
+		reg = <2>;
+		interrupt-parent = <&porta>;
+		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+	};
+	spi@3 {
+		compatible = "pensando,cpld";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		spi-max-frequency = <12000000>;
+		reg = <3>;
+	};
+};
diff --git a/arch/arm64/boot/dts/pensando/elba-asic.dts b/arch/arm64/boot/dts/pensando/elba-asic.dts
new file mode 100644
index 000000000000..411c48457006
--- /dev/null
+++ b/arch/arm64/boot/dts/pensando/elba-asic.dts
@@ -0,0 +1,8 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+/dts-v1/;
+
+#include "elba.dtsi"
+#include "elba-16core.dtsi"
+#include "elba-asic-common.dtsi"
+#include "elba-flash-parts.dtsi"
diff --git a/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi b/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
new file mode 100644
index 000000000000..1983de1a8403
--- /dev/null
+++ b/arch/arm64/boot/dts/pensando/elba-flash-parts.dtsi
@@ -0,0 +1,80 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		partition@0 {
+			label = "flash";
+			reg = <0x00010000 0x0fff0000>;
+		};
+		partition@f0000 {
+			label = "golduenv";
+			reg = <0x000f0000 0x00010000>;
+		};
+		partition@100000 {
+			label = "boot0";
+			reg = <0x00100000 0x00080000>;
+		};
+		partition@180000 {
+			label = "golduboot";
+			reg = <0x00180000 0x00200000>;
+		};
+		partition@400000 {
+			label = "goldfw";
+			reg = <0x00400000 0x03c00000>;
+		};
+		partition@4010000 {
+			label = "fwmap";
+			reg = <0x04010000 0x00020000>;
+		};
+		partition@4030000 {
+			label = "fwsel";
+			reg = <0x04030000 0x00020000>;
+		};
+		partition@4090000 {
+			label = "bootlog";
+			reg = <0x04090000 0x00020000>;
+		};
+		partition@40b0000 {
+			label = "panicbuf";
+			reg = <0x040b0000 0x00020000>;
+		};
+		partition@40d0000 {
+			label = "uservars";
+			reg = <0x040d0000 0x00020000>;
+		};
+		partition@4200000 {
+			label = "uboota";
+			reg = <0x04200000 0x00400000>;
+		};
+		partition@4600000 {
+			label = "ubootb";
+			reg = <0x04600000 0x00400000>;
+		};
+		partition@4a00000 {
+			label = "mainfwa";
+			reg = <0x04a00000 0x01000000>;
+		};
+		partition@5a00000 {
+			label = "mainfwb";
+			reg = <0x05a00000 0x01000000>;
+		};
+		partition@8000000 {
+			label = "diagfw";
+			reg = <0x08000000 0x07fe0000>;
+		};
+		partition@ffe0000 {
+			label = "ubootenv";
+			reg = <0x0ffe0000 0x00010000>;
+		};
+	};
+};
+
+&soc {
+	panicdump@740b0000 {
+		compatible = "pensando,capri-crash";
+		reg = <0x0 0x740b0000 0x0 0x00020000>;
+	};
+};
diff --git a/arch/arm64/boot/dts/pensando/elba.dtsi b/arch/arm64/boot/dts/pensando/elba.dtsi
new file mode 100644
index 000000000000..72245e279483
--- /dev/null
+++ b/arch/arm64/boot/dts/pensando/elba.dtsi
@@ -0,0 +1,310 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019-2021, Pensando Systems Inc.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "dt-bindings/interrupt-controller/arm-gic.h"
+
+/ {
+	compatible = "pensando,elba";
+
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	clocks {
+		ahb_clk: oscillator0 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+		};
+		emmc_clk: oscillator2 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+		};
+		flash_clk: oscillator3 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+		};
+		ref_clk: oscillator4 {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) |
+					IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) |
+					IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) |
+					IRQ_TYPE_LEVEL_LOW)>,
+			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) |
+					IRQ_TYPE_LEVEL_LOW)>;
+	};
+
+	pmu {
+		compatible = "arm,cortex-a72-pmu";
+		interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(1) |
+				IRQ_TYPE_LEVEL_LOW)>;
+	};
+
+	/* Common UIO device for MSI drivers */
+	uio_penmsi {
+		compatible = "pensando,uio_penmsi";
+		name = "uio_penmsi";
+	};
+
+
+	soc: soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		gic: interrupt-controller@800000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			interrupt-controller;
+			reg = <0x0 0x800000 0x0 0x200000>,	// GICD
+			      <0x0 0xa00000 0x0 0x200000>;	// GICR
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+
+			its: interrupt-controller@820000 {
+				compatible = "arm,gic-v3-its";
+				msi-controller;
+				#msi-cells = <1>;
+				reg = <0x0 0x820000 0x0 0x10000>;
+				socionext,synquacer-pre-its =
+							<0xc00000 0x1000000>;
+			};
+		};
+
+		/*
+		 * Until we  know the interrupt domain following this, we
+		 * are forced to use this is the place where interrupts from
+		 * PCI converge. In the ideal case, we use one domain higher,
+		 * where the PCI-ness has been shed.
+		 */
+		pxc0_intr: intc@20102200 {
+			compatible = "pensando,soc-ictlr-csrintr";
+			interrupt-controller;
+			reg = <0x0 0x20102200 0x0 0x4>;
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			interrupts = <GIC_SPI 17 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "pxc0_intr";
+		};
+
+		uart0: serial@4800 {
+			device_type = "serial";
+			compatible = "ns16550a";
+			reg = <0x0 0x4800 0x0 0x100>;
+			clocks = <&ref_clk>;
+			interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+		};
+
+		qspi: spi@2400 {
+			compatible = "pensando,cdns-qspi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x0 0x2400 0x0 0x400>,
+			      <0x0 0x7fff0000 0x0 0x1000>;
+			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&flash_clk>;
+			cdns,fifo-depth = <1024>;
+			cdns,fifo-width = <4>;
+			cdns,trigger-address = <0x7fff0000>;
+			status = "disabled";
+		};
+
+		gpio0: gpio@4000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "snps,dw-apb-gpio";
+			reg = <0x0 0x4000 0x0 0x78>;
+			status = "disabled";
+
+			porta: gpio-controller@0 {
+				compatible = "snps,dw-apb-gpio-port";
+				reg = <0>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				ngpios = <8>;
+				interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-controller;
+				interrupt-parent = <&gic>;
+				#interrupt-cells = <2>;
+			};
+			portb: gpio-controller@1 {
+				compatible = "snps,dw-apb-gpio-port";
+				reg = <1>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				ngpios = <8>;
+			};
+		};
+
+		i2c0: i2c@400 {
+			compatible = "snps,designware-i2c";
+			reg = <0x0 0x400 0x0 0x100>;
+			clocks = <&ahb_clk>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			i2c-sda-hold-time-ns = <480>;
+			snps,sda-timeout-ms = <750>;
+			interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
+		/* UIO device using interrupt line PCIEMAC */
+		pciemac@20102200 {
+			#address-cells = <2>;
+			#size-cells = <2>;
+			#interrupt-cells = <3>;
+
+			compatible = "pensando,uio_pciemac";
+			register-type = "csr-interrupt";
+			interrupt-parent = <&pxc0_intr>;
+			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>;
+			reg = <0x0 0x20102200 0x0 0x10>; /* pxc0_intr */
+
+			enable_csr_paddr = <0x0 0x20102200 0x0 0x10>;
+			enable_mask = <(1 << 0)>;
+		};
+
+		/* MSI UIO device 1 */
+		uio_penmsi1@520000 {
+			compatible = "pensando,uio_penmsi1";
+			reg = <0x0 0x520000 0x0 0x10000>;
+			msi-parent = <&its 0xa>;
+			num-interrupts = <16>;  /* # MSI interrupts to get */
+		};
+
+		spics: spics@307c2468 {
+			compatible = "pensando,elba-spics";
+			reg = <0x0 0x307c2468 0x0 0x4>;
+			gpio-controller;
+			#gpio-cells = <2>;
+		};
+
+		spi0: spi@2800 {
+			compatible = "pensando,elba-spi";
+			reg = <0x0 0x2800 0x0 0x100>;
+			clocks = <&ahb_clk>;
+			interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			num-cs = <2>;
+			status = "disabled";
+		};
+
+		wdt0: watchdog@1400 {
+			compatible = "snps,dw-wdt";
+			reg = <0x0 0x1400 0x0 0x100>;
+			clocks = <&ahb_clk>;
+			interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+		wdt1: watchdog@1800 {
+			compatible = "snps,dw-wdt";
+			reg = <0x0 0x1800 0x0 0x100>;
+			clocks = <&ahb_clk>;
+			interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+		wdt2: watchdog@1c00 {
+			compatible = "snps,dw-wdt";
+			reg = <0x0 0x1c00 0x0 0x100>;
+			clocks = <&ahb_clk>;
+			interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+		wdt3: watchdog@2000 {
+			compatible = "snps,dw-wdt";
+			reg = <0x0 0x2000 0x0 0x100>;
+			clocks = <&ahb_clk>;
+			interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
+			status = "disabled";
+		};
+
+		emmc: sdio-host-chip@30440000 {
+			compatible = "pensando,elba-emmc";
+			clocks = <&emmc_clk>;
+			interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+			reg = <0x0 0x30440000 0x0 0x10000
+			       0x0 0x30480044 0x0 0x4>;
+			cdns,phy-input-delay-sd-highspeed = <0x4>;
+			cdns,phy-input-delay-legacy = <0x4>;
+			cdns,phy-input-delay-sd-uhs-sdr50 = <0x6>;
+			cdns,phy-input-delay-sd-uhs-ddr50 = <0x16>;
+			cdns,mmc-ddr-1_8v;
+			status = "disabled";
+		} ;
+
+		pcie@307c2480 {
+			compatible = "pensando,pcie";
+			reg = <0x0 0x307c2480 0x0 0x4   /* MS CFG_WDT */
+			       0x0 0x00001400 0x0 0x10  /* WDT0 */
+			       0x0 0x20000000 0x0 0x00380000>; /* PXB Base */
+		};
+
+		panic: panicdump@0 {
+			compatible = "pensando,pen-crash";
+			status = "disabled";
+		};
+
+		bsm@307c2080 {
+			compatible = "pensando,bsm";
+			reg = <0x0 0x307c2080 0x0 0x4>;
+		};
+	};
+	mnet0: mnet0 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x0>;
+	};
+	mnet1: mnet1 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x1>;
+	};
+	mnet2: mnet2 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x2>;
+	};
+	mnet3: mnet3 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x3>;
+	};
+	mnet4: mnet4 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x4>;
+	};
+	mnet5: mnet5 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x5>;
+	};
+	mnet6: mnet6 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x6>;
+	};
+	mnet7: mnet7 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x7>;
+	};
+	mnet8: mnet8 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x8>;
+	};
+	mnet9: mnet9 {
+		compatible = "pensando,mnet";
+		msi-parent = <&its 0x9>;
+	};
+};