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Diffstat (limited to 'Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml')
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1 files changed, 186 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml new file mode 100644 index 000000000000..0f18cceba3d5 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml @@ -0,0 +1,186 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/renesas,pci-rcar-gen2.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas AHB to PCI bridge + +maintainers: + - Marek Vasut <marek.vasut+renesas@gmail.com> + - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> + +description: | + This is the bridge used internally to connect the USB controllers to the + AHB. There is one bridge instance per USB port connected to the internal + OHCI and EHCI controllers. + +properties: + compatible: + oneOf: + - items: + - enum: + - renesas,pci-r8a7742 # RZ/G1H + - renesas,pci-r8a7743 # RZ/G1M + - renesas,pci-r8a7744 # RZ/G1N + - renesas,pci-r8a7745 # RZ/G1E + - renesas,pci-r8a7790 # R-Car H2 + - renesas,pci-r8a7791 # R-Car M2-W + - renesas,pci-r8a7793 # R-Car M2-N + - renesas,pci-r8a7794 # R-Car E2 + - const: renesas,pci-rcar-gen2 # R-Car Gen2 and RZ/G1 + - items: + - enum: + - renesas,pci-r9a06g032 # RZ/N1D + - const: renesas,pci-rzn1 # RZ/N1 + + reg: + items: + - description: Operational registers for the OHCI/EHCI controllers. + - description: Bridge configuration and control registers. + + interrupts: + maxItems: 1 + + clocks: true + + clock-names: true + + resets: + maxItems: 1 + + power-domains: + maxItems: 1 + + bus-range: + description: | + The PCI bus number range; as this is a single bus, the range + should be specified as the same value twice. + + dma-ranges: + description: | + A single range for the inbound memory region. If not supplied, + defaults to 1GiB at 0x40000000. Note there are hardware restrictions on + the allowed combinations of address and size. + maxItems: 1 + +patternProperties: + 'usb@[0-1],0': + type: object + + description: + This a USB controller PCI device + + properties: + reg: + description: + Identify the correct bus, device and function number in the + form <bdf 0 0 0 0>. + + items: + minItems: 5 + maxItems: 5 + + phys: + description: + Reference to the USB phy + maxItems: 1 + + phy-names: + maxItems: 1 + + required: + - reg + - phys + - phy-names + + unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + - interrupt-map + - interrupt-map-mask + - clocks + - power-domains + - bus-range + - "#address-cells" + - "#size-cells" + - "#interrupt-cells" + +allOf: + - $ref: /schemas/pci/pci-bus.yaml# + + - if: + properties: + compatible: + contains: + enum: + - renesas,pci-rzn1 + then: + properties: + clocks: + items: + - description: Internal bus clock (AHB) for HOST + - description: Internal bus clock (AHB) Power Management + - description: PCI clock for USB subsystem + clock-names: + items: + - const: hclkh + - const: hclkpm + - const: pciclk + required: + - clock-names + else: + properties: + clocks: + items: + - description: Device clock + clock-names: + items: + - const: pclk + required: + - resets + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/r8a7790-cpg-mssr.h> + #include <dt-bindings/power/r8a7790-sysc.h> + + pci@ee090000 { + compatible = "renesas,pci-r8a7790", "renesas,pci-rcar-gen2"; + device_type = "pci"; + reg = <0xee090000 0xc00>, + <0xee080000 0x1100>; + clocks = <&cpg CPG_MOD 703>; + power-domains = <&sysc R8A7790_PD_ALWAYS_ON>; + resets = <&cpg 703>; + interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; + + bus-range = <0 0>; + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + ranges = <0x02000000 0 0xee080000 0xee080000 0 0x00010000>; + dma-ranges = <0x42000000 0 0x40000000 0x40000000 0 0x40000000>; + interrupt-map-mask = <0xf800 0 0 0x7>; + interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>, + <0x0800 0 0 1 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>, + <0x1000 0 0 2 &gic GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; + + usb@1,0 { + reg = <0x800 0 0 0 0>; + phys = <&usb0 0>; + phy-names = "usb"; + }; + + usb@2,0 { + reg = <0x1000 0 0 0 0>; + phys = <&usb0 0>; + phy-names = "usb"; + }; + }; |