| Message ID | 1f4cec50493ec5d3168735c0a005771787e5cd59.1730123575.git.andrea.porta@suse.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add support for RaspberryPi RP1 PCI device using a DT overlay | expand |
Hi Andrea, On 10/28/24 16:07, Andrea della Porta wrote: > RaspberryPi RP1 is a multi function PCI endpoint device that > exposes several subperipherals via PCI BAR. > Add a dtb overlay that will be compiled into a binary blob > and linked in the RP1 driver. > This overlay offers just minimal support to represent the > RP1 device itself, the sub-peripherals will be added by > future patches. > > Signed-off-by: Andrea della Porta <andrea.porta@suse.com> > --- > NOTE: this patch should be taken by the same maintainer that will take > "[PATCH v3 10/12] misc: rp1: RaspberryPi RP1 misc driver", since they > are closely related in terms of compiling. > > MAINTAINERS | 1 + > arch/arm64/boot/dts/broadcom/rp1.dtso | 61 +++++++++++++++++++++++++++ > 2 files changed, 62 insertions(+) > create mode 100644 arch/arm64/boot/dts/broadcom/rp1.dtso > > diff --git a/MAINTAINERS b/MAINTAINERS > index 06277969a522..510a071ede78 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -19383,6 +19383,7 @@ F: include/uapi/linux/media/raspberrypi/ > RASPBERRY PI RP1 PCI DRIVER > M: Andrea della Porta <andrea.porta@suse.com> > S: Maintained > +F: arch/arm64/boot/dts/broadcom/rp1.dtso > F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml > F: Documentation/devicetree/bindings/misc/pci1de4,1.yaml > F: Documentation/devicetree/bindings/pci/pci-ep-bus.yaml > diff --git a/arch/arm64/boot/dts/broadcom/rp1.dtso b/arch/arm64/boot/dts/broadcom/rp1.dtso > new file mode 100644 > index 000000000000..8d1bbf207a30 > --- /dev/null > +++ b/arch/arm64/boot/dts/broadcom/rp1.dtso > @@ -0,0 +1,61 @@ > +// SPDX-License-Identifier: (GPL-2.0 OR MIT) > + > +#include <dt-bindings/gpio/gpio.h> > +#include <dt-bindings/interrupt-controller/irq.h> > +#include <dt-bindings/clock/raspberrypi,rp1-clocks.h> > + > +/dts-v1/; > +/plugin/; > + > +/ { > + fragment@0 { > + target-path=""; > + __overlay__ { > + compatible = "pci1de4,1"; > + #address-cells = <3>; > + #size-cells = <2>; > + interrupt-controller; > + #interrupt-cells = <2>; > + > + pci_ep_bus: pci-ep-bus@1 { > + compatible = "simple-bus"; > + ranges = <0xc0 0x40000000 > + 0x01 0x00 0x00000000 > + 0x00 0x00400000>; > + dma-ranges = <0x10 0x00000000 > + 0x43000000 0x10 0x00000000 > + 0x10 0x00000000>; > + #address-cells = <2>; > + #size-cells = <2>; > + > + rp1_clocks: clocks@c040018000 { > + compatible = "raspberrypi,rp1-clocks"; > + reg = <0xc0 0x40018000 0x0 0x10038>; shouldn't this be: rp1_clocks: clocks@18000 { reg = <0x00 0x00018000 0x0 0x10038>; ... } ? And for other nodes too... ~Stan > + #clock-cells = <1>; > + clocks = <&clk_rp1_xosc>; > + clock-names = "xosc"; > + assigned-clocks = <&rp1_clocks RP1_PLL_SYS_CORE>, > + <&rp1_clocks RP1_PLL_SYS>, > + <&rp1_clocks RP1_CLK_SYS>; > + assigned-clock-rates = <1000000000>, // RP1_PLL_SYS_CORE > + <200000000>, // RP1_PLL_SYS > + <200000000>; // RP1_CLK_SYS > + }; > + > + rp1_gpio: pinctrl@c0400d0000 { > + compatible = "raspberrypi,rp1-gpio"; > + reg = <0xc0 0x400d0000 0x0 0xc000>, > + <0xc0 0x400e0000 0x0 0xc000>, > + <0xc0 0x400f0000 0x0 0xc000>; > + gpio-controller; > + #gpio-cells = <2>; > + interrupt-controller; > + #interrupt-cells = <2>; > + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>, > + <1 IRQ_TYPE_LEVEL_HIGH>, > + <2 IRQ_TYPE_LEVEL_HIGH>; > + }; > + }; > + }; > + }; > +};
diff --git a/MAINTAINERS b/MAINTAINERS index 06277969a522..510a071ede78 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19383,6 +19383,7 @@ F: include/uapi/linux/media/raspberrypi/ RASPBERRY PI RP1 PCI DRIVER M: Andrea della Porta <andrea.porta@suse.com> S: Maintained +F: arch/arm64/boot/dts/broadcom/rp1.dtso F: Documentation/devicetree/bindings/clock/raspberrypi,rp1-clocks.yaml F: Documentation/devicetree/bindings/misc/pci1de4,1.yaml F: Documentation/devicetree/bindings/pci/pci-ep-bus.yaml diff --git a/arch/arm64/boot/dts/broadcom/rp1.dtso b/arch/arm64/boot/dts/broadcom/rp1.dtso new file mode 100644 index 000000000000..8d1bbf207a30 --- /dev/null +++ b/arch/arm64/boot/dts/broadcom/rp1.dtso @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) + +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/interrupt-controller/irq.h> +#include <dt-bindings/clock/raspberrypi,rp1-clocks.h> + +/dts-v1/; +/plugin/; + +/ { + fragment@0 { + target-path=""; + __overlay__ { + compatible = "pci1de4,1"; + #address-cells = <3>; + #size-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + + pci_ep_bus: pci-ep-bus@1 { + compatible = "simple-bus"; + ranges = <0xc0 0x40000000 + 0x01 0x00 0x00000000 + 0x00 0x00400000>; + dma-ranges = <0x10 0x00000000 + 0x43000000 0x10 0x00000000 + 0x10 0x00000000>; + #address-cells = <2>; + #size-cells = <2>; + + rp1_clocks: clocks@c040018000 { + compatible = "raspberrypi,rp1-clocks"; + reg = <0xc0 0x40018000 0x0 0x10038>; + #clock-cells = <1>; + clocks = <&clk_rp1_xosc>; + clock-names = "xosc"; + assigned-clocks = <&rp1_clocks RP1_PLL_SYS_CORE>, + <&rp1_clocks RP1_PLL_SYS>, + <&rp1_clocks RP1_CLK_SYS>; + assigned-clock-rates = <1000000000>, // RP1_PLL_SYS_CORE + <200000000>, // RP1_PLL_SYS + <200000000>; // RP1_CLK_SYS + }; + + rp1_gpio: pinctrl@c0400d0000 { + compatible = "raspberrypi,rp1-gpio"; + reg = <0xc0 0x400d0000 0x0 0xc000>, + <0xc0 0x400e0000 0x0 0xc000>, + <0xc0 0x400f0000 0x0 0xc000>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>, + <1 IRQ_TYPE_LEVEL_HIGH>, + <2 IRQ_TYPE_LEVEL_HIGH>; + }; + }; + }; + }; +};
RaspberryPi RP1 is a multi function PCI endpoint device that exposes several subperipherals via PCI BAR. Add a dtb overlay that will be compiled into a binary blob and linked in the RP1 driver. This overlay offers just minimal support to represent the RP1 device itself, the sub-peripherals will be added by future patches. Signed-off-by: Andrea della Porta <andrea.porta@suse.com> --- NOTE: this patch should be taken by the same maintainer that will take "[PATCH v3 10/12] misc: rp1: RaspberryPi RP1 misc driver", since they are closely related in terms of compiling. MAINTAINERS | 1 + arch/arm64/boot/dts/broadcom/rp1.dtso | 61 +++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) create mode 100644 arch/arm64/boot/dts/broadcom/rp1.dtso