From: Simon Xue <xxm@xxxxxxxxxxxxxx> Signed-off-by: Simon Xue <xxm@xxxxxxxxxxxxxx> Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx> --- Changes in v2: - fix yaml format .../devicetree/bindings/pci/rockchip-dw-pcie.yaml | 148 +++++++++++++++++++++ 1 file changed, 148 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 0000000..527c770 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/rockchip-dw-pcie.yaml @@ -0,0 +1,148 @@ +# 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,rk1808-pcie + required: + - compatible + +properties: + compatible: + enum: + - rockchip,rk1808-pcie + - snps,dw-pcie + + reg: + maxItems: 1 + + clocks: + items: + - description: High speed clock for PCIe + - description: Low speed clock for PCIe + - description: AHB clock for PCIe + - description: APB clock for PCIe + - description: Auxiliary clock for PCIe + + clock-names: + items: + - const: hsclk + - const: lsclk + - const: aclk + - const: pclk + - const: sclk-aux + + resets: + items: + - description: PCIe niu high reset line + - description: PCIe niu low reset line + - description: PCIe grf reset line + - description: PCIe control reset line + - description: PCIe control powerup reset line + - description: PCIe control master reset line + - description: PCIe control slave reset line + - description: PCIe control dbi reset line + - description: PCIe control button reset line + - description: PCIe control power engine reset line + - description: PCIe control core reset line + - description: PCIe control non-sticky reset line + - description: PCIe control sticky reset line + - description: PCIe control power reset line + - description: PCIe niu ahb reset line + - description: PCIe niu apb reset line + + reset-names: + items: + - const: niu-h + - const: niu-l + - const: grf-p + - const: ctl-p + - const: ctl-powerup + - const: ctl-mst-a + - const: ctl-slv-a + - const: ctl-dbi-a + - const: ctl-button + - const: ctl-pe + - const: ctl-core + - const: ctl-nsticky + - const: ctl-sticky + - const: ctl-pwr + - const: ctl-niu-a + - const: ctl-niu-p + + rockchip,usbpciegrf: + enum: + - rockchip,usbpciegrf + description: The grf for COMBPHY configuration and state registers. + +required: + - compatible + - "#address-cells" + - "#size-cells" + - reg + - clocks + - clock-names + - msi-map + - num-lanes + - phys + - phy-names + - ranges + - resets + - reset-names + - rockchip,usbpciegrf + - reset-gpios + +additionalProperties: false + +examples: + - | + pcie0: pcie@fc400000 { + compatible = "rockchip,rk1808-pcie", "snps,dw-pcie"; + #address-cells = <3>; + #size-cells = <2>; + bus-range = <0x0 0x1f>; + reg = <0x0 0xfc000000 0x0 0x400000>, + <0x0 0xfc400000 0x0 0x10000>; + clocks = <&cru HSCLK_PCIE>, <&cru LSCLK_PCIE>, + <&cru ACLK_PCIE>, <&cru PCLK_PCIE>, + <&cru SCLK_PCIE_AUX>; + clock-names = "hsclk", "lsclk", + "aclk", "pclk", + "sclk-aux"; + msi-map = <0x0 &its 0x0 0x1000>; + num-lanes = <2>; + phys = <&combphy PHY_TYPE_PCIE>; + phy-names = "pcie-phy"; + ranges = <0x00000800 0x0 0xf8000000 0x0 0xf8000000 0x0 0x800000 + 0x83000000 0x0 0xf8800000 0x0 0xf8800000 0x0 0x3700000 + 0x81000000 0x0 0xfbf00000 0x0 0xfbf00000 0x0 0x100000>; + resets = <&cru SRST_PCIE_NIU_H>, <&cru SRST_PCIE_NIU_L>, + <&cru SRST_PCIEGRF_P>, <&cru SRST_PCIECTL_P>, + <&cru SRST_PCIECTL_POWERUP>, <&cru SRST_PCIECTL_MST_A>, + <&cru SRST_PCIECTL_SLV_A>, <&cru SRST_PCIECTL_DBI_A>, + <&cru SRST_PCIECTL_BUTTON>, <&cru SRST_PCIECTL_PE>, + <&cru SRST_PCIECTL_CORE>, <&cru SRST_PCIECTL_NSTICKY>, + <&cru SRST_PCIECTL_STICKY>, <&cru SRST_PCIECTL_PWR>, + <&cru SRST_PCIE_NIU_A>, <&cru SRST_PCIE_NIU_P>; + reset-names = "niu-h", "niu-l", "grf-p", "ctl-p", + "ctl-powerup", "ctl-mst-a", "ctl-slv-a", + "ctl-dbi-a", "ctl-button", "ctl-pe", + "ctl-core", "ctl-nsticky", "ctl-sticky", + "ctl-pwr", "ctl-niu-a", "ctl-niu-p"; + rockchip,usbpciegrf = <&usb_pcie_grf>; + reset-gpios = <&gpio0 RK_PB6 GPIO_ACTIVE_HIGH>; + }; + +... -- 1.9.1
