Signed-off-by: Simon Xue <xxm@xxxxxxxxxxxxxx> --- .../bindings/pci/rockchip-dw-pcie.yaml | 101 ++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml diff --git a/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml new file mode 100644 index 000000000000..fa664cfffb29 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml @@ -0,0 +1,101 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/rockchip-dw-pcie.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: DesignWare based PCIe RC controller on Rockchip SoCs + +maintainers: + - Shawn Lin <shawn.lin@xxxxxxxxxxxxxx> + - Simon Xue <xxm@xxxxxxxxxxxxxx> + +# We need a select here so we don't match all nodes with 'snps,dw-pcie' +select: + properties: + compatible: + contains: + const: rockchip,rk3568-pcie + required: + - compatible + +properties: + compatible: + enum: + - rockchip,rk3568-pcie + - snps,dw-pcie + + reg: + maxItems: 1 + + clocks: + items: + - description: AHB clock for PCIe master + - description: AHB clock for PCIe slave + - description: AHB clock for PCIe dbi + - description: APB clock for PCIe + - description: Auxiliary clock for PCIe + + clock-names: + items: + - const: aclk_mst + - const: aclk_slv + - const: aclk_dbi + - const: pclk + - const: aux + + resets: + items: + - description: PCIe pipe reset line + + reset-names: + items: + - const: pipe + +required: + - compatible + - "#address-cells" + - "#size-cells" + - bus-range + - reg + - reg-names + - clocks + - clock-names + - msi-map + - num-lanes + - phys + - phy-names + - ranges + - resets + - reset-names + +additionalProperties: false + +examples: + - | + pcie3x2: pcie@fe280000 { + compatible = "rockchip,rk3568-pcie", "snps,dw-pcie"; + #address-cells = <3>; + #size-cells = <2>; + bus-range = <0x20 0x2f>; + reg = <0x3 0xc0800000 0x0 0x400000>, + <0x0 0xfe280000 0x0 0x10000>; + reg-names = "pcie-dbi", "pcie-apb"; + clocks = <&cru ACLK_PCIE30X2_MST>, <&cru ACLK_PCIE30X2_SLV>, + <&cru ACLK_PCIE30X2_DBI>, <&cru PCLK_PCIE30X2>, + <&cru CLK_PCIE30X2_AUX_NDFT>; + clock-names = "aclk_mst", "aclk_slv", + "aclk_dbi", "pclk", + "aux"; + msi-map = <0x2000 &its 0x2000 0x1000>; + num-lanes = <2>; + phys = <&pcie30phy>; + phy-names = "pcie-phy"; + ranges = <0x00000800 0x0 0x80000000 0x3 0x80000000 0x0 0x800000 + 0x81000000 0x0 0x80800000 0x3 0x80800000 0x0 0x100000 + 0x83000000 0x0 0x80900000 0x3 0x80900000 0x0 0x3f700000>; + resets = <&cru SRST_PCIE30X2_POWERUP>; + reset-names = "pipe"; + }; + +... -- 2.25.1
