| Message ID | 20220111101338.58630-1-krzysztof.kozlowski@canonical.com |
|---|---|
| Headers | show |
| Series | spi: dt-bindings: samsung: convert to dtschema | expand |
On Tue, Jan 11, 2022 at 11:13:36AM +0100, Krzysztof Kozlowski wrote: > Convert the Samsung SoC (S3C24xx, S3C64xx, S5Pv210, Exynos) SPI > controller bindings to DT schema format > > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> > Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org> > --- > .../spi/samsung,spi-peripheral-props.yaml | 35 ++++ > .../devicetree/bindings/spi/samsung,spi.yaml | 198 ++++++++++++++++++ > .../bindings/spi/spi-peripheral-props.yaml | 1 + > .../devicetree/bindings/spi/spi-samsung.txt | 122 ----------- > MAINTAINERS | 2 +- > 5 files changed, 235 insertions(+), 123 deletions(-) > create mode 100644 Documentation/devicetree/bindings/spi/samsung,spi-peripheral-props.yaml > create mode 100644 Documentation/devicetree/bindings/spi/samsung,spi.yaml > delete mode 100644 Documentation/devicetree/bindings/spi/spi-samsung.txt > > diff --git a/Documentation/devicetree/bindings/spi/samsung,spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/samsung,spi-peripheral-props.yaml > new file mode 100644 > index 000000000000..aa5a1f48494b > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/samsung,spi-peripheral-props.yaml > @@ -0,0 +1,35 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/spi/samsung,spi-peripheral-props.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Peripheral-specific properties for Samsung S3C/S5P/Exynos SoC SPI controller > + > +maintainers: > + - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> > + > +description: > + See spi-peripheral-props.yaml for more info. > + > +properties: > + controller-data: > + type: object > + additionalProperties: false > + > + properties: > + samsung,spi-feedback-delay: > + description: | > + The sampling phase shift to be applied on the miso line (to account > + for any lag in the miso line). Valid values: > + - 0: No phase shift. > + - 1: 90 degree phase shift sampling. > + - 2: 180 degree phase shift sampling. > + - 3: 270 degree phase shift sampling. > + $ref: /schemas/types.yaml#/definitions/uint32 > + enum: [0, 1, 2, 3] > + > + required: > + - samsung,spi-feedback-delay > + > +additionalProperties: true > diff --git a/Documentation/devicetree/bindings/spi/samsung,spi.yaml b/Documentation/devicetree/bindings/spi/samsung,spi.yaml > new file mode 100644 > index 000000000000..da4533feb946 > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/samsung,spi.yaml > @@ -0,0 +1,198 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/spi/samsung,spi.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Samsung S3C/S5P/Exynos SoC SPI controller > + > +maintainers: > + - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> > + > +description: > + All the SPI controller nodes should be represented in the aliases node using > + the following format 'spi{n}' where n is a unique number for the alias. > + > +properties: > + compatible: > + oneOf: > + - enum: > + - samsung,s3c2443-spi # for S3C2443, S3C2416 and S3C2450 > + - samsung,s3c6410-spi > + - samsung,s5pv210-spi # for S5PV210 and S5PC110 > + - samsung,exynos5433-spi > + - const: samsung,exynos7-spi > + deprecated: true > + > + clocks: > + minItems: 2 > + maxItems: 3 > + > + clock-names: > + minItems: 2 > + maxItems: 3 > + > + cs-gpios: true > + > + dmas: > + minItems: 2 > + maxItems: 2 > + > + dma-names: > + items: > + - const: tx > + - const: rx > + > + interrupts: > + maxItems: 1 > + > + no-cs-readback: > + description: > + The CS line is disconnected, therefore the device should not operate > + based on CS signalling. > + type: boolean > + > + num-cs: > + minimum: 1 > + maximum: 4 > + default: 1 > + > + samsung,spi-src-clk: > + description: > + If the spi controller includes a internal clock mux to select the clock > + source for the spi bus clock, this property can be used to indicate the > + clock to be used for driving the spi bus clock. If not specified, the > + clock number 0 is used as default. > + $ref: /schemas/types.yaml#/definitions/uint32 > + default: 0 > + > + reg: > + maxItems: 1 > + > +patternProperties: > + "^.*@[0-9a-f]+$": > + type: object > + allOf: > + - $ref: spi-peripheral-props.yaml > + > + required: > + - controller-data > + > + unevaluatedProperties: false This is wrong because the child nodes will certainly have device specific properties. The whole child node schema can be dropped. > + > +required: > + - compatible > + - clocks > + - clock-names > + - dmas > + - dma-names > + - interrupts > + - reg > + > +allOf: > + - $ref: spi-controller.yaml# > + - if: > + properties: > + compatible: > + contains: > + const: samsung,exynos5433-spi > + then: > + properties: > + clocks: > + minItems: 3 > + maxItems: 3 > + clock-names: > + items: > + - const: spi > + - enum: > + - spi_busclk0 > + - spi_busclk1 > + - spi_busclk2 > + - spi_busclk3 > + - const: spi_ioclk > + else: > + properties: > + clocks: > + minItems: 2 > + maxItems: 2 > + clock-names: > + items: > + - const: spi > + - enum: > + - spi_busclk0 > + - spi_busclk1 > + - spi_busclk2 > + - spi_busclk3 > + > +unevaluatedProperties: false > + > +examples: > + - | > + #include <dt-bindings/clock/exynos5433.h> > + #include <dt-bindings/clock/samsung,s2mps11.h> > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/gpio/gpio.h> > + > + spi@14d30000 { > + compatible = "samsung,exynos5433-spi"; > + reg = <0x14d30000 0x100>; > + interrupts = <GIC_SPI 433 IRQ_TYPE_LEVEL_HIGH>; > + dmas = <&pdma0 11>, <&pdma0 10>; > + dma-names = "tx", "rx"; > + #address-cells = <1>; > + #size-cells = <0>; > + clocks = <&cmu_peric CLK_PCLK_SPI1>, > + <&cmu_peric CLK_SCLK_SPI1>, > + <&cmu_peric CLK_SCLK_IOCLK_SPI1>; > + clock-names = "spi", > + "spi_busclk0", > + "spi_ioclk"; > + samsung,spi-src-clk = <0>; > + pinctrl-names = "default"; > + pinctrl-0 = <&spi1_bus>; > + num-cs = <1>; > + > + cs-gpios = <&gpd6 3 GPIO_ACTIVE_HIGH>; > + > + audio-codec@0 { > + compatible = "wlf,wm5110"; > + reg = <0x0>; > + spi-max-frequency = <20000000>; > + interrupt-parent = <&gpa0>; > + interrupts = <4 IRQ_TYPE_NONE>; > + clocks = <&pmu_system_controller 0>, > + <&s2mps13_osc S2MPS11_CLK_BT>; > + clock-names = "mclk1", "mclk2"; > + > + gpio-controller; > + #gpio-cells = <2>; > + interrupt-controller; > + #interrupt-cells = <2>; > + > + wlf,micd-detect-debounce = <300>; > + wlf,micd-bias-start-time = <0x1>; > + wlf,micd-rate = <0x7>; > + wlf,micd-dbtime = <0x2>; > + wlf,micd-force-micbias; > + wlf,micd-configs = <0x0 1 0>; > + wlf,hpdet-channel = <1>; > + wlf,gpsw = <0x1>; > + wlf,inmode = <2 0 2 0>; > + > + wlf,reset = <&gpc0 7 GPIO_ACTIVE_HIGH>; > + wlf,ldoena = <&gpf0 0 GPIO_ACTIVE_HIGH>; > + > + /* core supplies */ > + AVDD-supply = <&ldo18_reg>; > + DBVDD1-supply = <&ldo18_reg>; > + CPVDD-supply = <&ldo18_reg>; > + DBVDD2-supply = <&ldo18_reg>; > + DBVDD3-supply = <&ldo18_reg>; > + SPKVDDL-supply = <&ldo18_reg>; > + SPKVDDR-supply = <&ldo18_reg>; > + > + controller-data { > + samsung,spi-feedback-delay = <0>; > + }; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml > index 5dd209206e88..df885eeb144f 100644 > --- a/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml > +++ b/Documentation/devicetree/bindings/spi/spi-peripheral-props.yaml > @@ -85,5 +85,6 @@ properties: > # The controller specific properties go here. > allOf: > - $ref: cdns,qspi-nor-peripheral-props.yaml# > + - $ref: samsung,spi-peripheral-props.yaml# > > additionalProperties: true > diff --git a/Documentation/devicetree/bindings/spi/spi-samsung.txt b/Documentation/devicetree/bindings/spi/spi-samsung.txt > deleted file mode 100644 > index 49028a4f5df1..000000000000 > --- a/Documentation/devicetree/bindings/spi/spi-samsung.txt > +++ /dev/null > @@ -1,122 +0,0 @@ > -* Samsung SPI Controller > - > -The Samsung SPI controller is used to interface with various devices such as flash > -and display controllers using the SPI communication interface. > - > -Required SoC Specific Properties: > - > -- compatible: should be one of the following. > - - samsung,s3c2443-spi: for s3c2443, s3c2416 and s3c2450 platforms > - - samsung,s3c6410-spi: for s3c6410 platforms > - - samsung,s5pv210-spi: for s5pv210 and s5pc110 platforms > - - samsung,exynos5433-spi: for exynos5433 compatible controllers > - - samsung,exynos7-spi: for exynos7 platforms <DEPRECATED> > - > -- reg: physical base address of the controller and length of memory mapped > - region. > - > -- interrupts: The interrupt number to the cpu. The interrupt specifier format > - depends on the interrupt controller. > - > -- dmas : Two or more DMA channel specifiers following the convention outlined > - in bindings/dma/dma.txt > - > -- dma-names: Names for the dma channels. There must be at least one channel > - named "tx" for transmit and named "rx" for receive. > - > -- clocks: specifies the clock IDs provided to the SPI controller; they are > - required for interacting with the controller itself, for synchronizing the bus > - and as I/O clock (the latter is required by exynos5433 and exynos7). > - > -- clock-names: string names of the clocks in the 'clocks' property; for all the > - the devices the names must be "spi", "spi_busclkN" (where N is determined by > - "samsung,spi-src-clk"), while Exynos5433 should specify a third clock > - "spi_ioclk" for the I/O clock. > - > -Required Board Specific Properties: > - > -- #address-cells: should be 1. > -- #size-cells: should be 0. > - > -Optional Board Specific Properties: > - > -- samsung,spi-src-clk: If the spi controller includes a internal clock mux to > - select the clock source for the spi bus clock, this property can be used to > - indicate the clock to be used for driving the spi bus clock. If not specified, > - the clock number 0 is used as default. > - > -- num-cs: Specifies the number of chip select lines supported. If > - not specified, the default number of chip select lines is set to 1. > - > -- cs-gpios: should specify GPIOs used for chipselects (see spi-bus.txt) > - > -- no-cs-readback: the CS line is disconnected, therefore the device should not > - operate based on CS signalling. > - > -SPI Controller specific data in SPI slave nodes: > - > -- The spi slave nodes should provide the following information which is required > - by the spi controller. > - > - - samsung,spi-feedback-delay: The sampling phase shift to be applied on the > - miso line (to account for any lag in the miso line). The following are the > - valid values. > - > - - 0: No phase shift. > - - 1: 90 degree phase shift sampling. > - - 2: 180 degree phase shift sampling. > - - 3: 270 degree phase shift sampling. > - > -Aliases: > - > -- All the SPI controller nodes should be represented in the aliases node using > - the following format 'spi{n}' where n is a unique number for the alias. > - > - > -Example: > - > -- SoC Specific Portion: > - > - spi_0: spi@12d20000 { > - compatible = "samsung,exynos4210-spi"; > - reg = <0x12d20000 0x100>; > - interrupts = <0 66 0>; > - dmas = <&pdma0 5 > - &pdma0 4>; > - dma-names = "tx", "rx"; > - #address-cells = <1>; > - #size-cells = <0>; > - }; > - > -- Board Specific Portion: > - > - spi_0: spi@12d20000 { > - #address-cells = <1>; > - #size-cells = <0>; > - pinctrl-names = "default"; > - pinctrl-0 = <&spi0_bus>; > - cs-gpios = <&gpa2 5 0>; > - > - w25q80bw@0 { > - #address-cells = <1>; > - #size-cells = <1>; > - compatible = "w25x80"; > - reg = <0>; > - spi-max-frequency = <10000>; > - > - controller-data { > - samsung,spi-feedback-delay = <0>; > - }; > - > - partition@0 { > - label = "U-Boot"; > - reg = <0x0 0x40000>; > - read-only; > - }; > - > - partition@40000 { > - label = "Kernel"; > - reg = <0x40000 0xc0000>; > - }; > - }; > - }; > diff --git a/MAINTAINERS b/MAINTAINERS > index 5ea5655a29c3..1f951bc877f0 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -17054,7 +17054,7 @@ M: Andi Shyti <andi@etezian.org> > L: linux-spi@vger.kernel.org > L: linux-samsung-soc@vger.kernel.org > S: Maintained > -F: Documentation/devicetree/bindings/spi/spi-samsung.txt > +F: Documentation/devicetree/bindings/spi/samsung,spi*.yaml > F: drivers/spi/spi-s3c* > F: include/linux/platform_data/spi-s3c64xx.h > F: include/linux/spi/s3c24xx-fiq.h > -- > 2.32.0 > >