From e6db6089abc83ddfad7537aa14ead97ba857300d Mon Sep 17 00:00:00 2001 From: Xiaowei Song Date: Thu, 15 Jun 2017 11:04:11 +0800 Subject: [PATCH] dt-bindings: PCI: hisi: Add document for PCIe of Kirin SoCs This patch adds document for PCIe of Kirin SoC series. Signed-off-by: Xiaowei Song Acked-by: Rob Herring Signed-off-by: Wei Xu --- .../devicetree/bindings/pci/kirin-pcie.txt | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/kirin-pcie.txt diff --git a/Documentation/devicetree/bindings/pci/kirin-pcie.txt b/Documentation/devicetree/bindings/pci/kirin-pcie.txt new file mode 100644 index 000000000000..68ffa0fbcd73 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/kirin-pcie.txt @@ -0,0 +1,50 @@ +HiSilicon Kirin SoCs PCIe host DT description + +Kirin PCIe host controller is based on Designware PCI core. +It shares common functions with PCIe Designware core driver +and inherits common properties defined in +Documentation/devicetree/bindings/pci/designware-pci.txt. + +Additional properties are described here: + +Required properties +- compatible: + "hisilicon,kirin960-pcie" for PCIe of Kirin960 SoC +- reg: Should contain rc_dbi, apb, phy, config registers location and length. +- reg-names: Must include the following entries: + "dbi": controller configuration registers; + "apb": apb Ctrl register defined by Kirin; + "phy": apb PHY register defined by Kirin; + "config": PCIe configuration space registers. +- reset-gpios: The gpio to generate PCIe perst assert and deassert signal. + +Optional properties: + +Example based on kirin960: + + pcie@f4000000 { + compatible = "hisilicon,kirin-pcie"; + reg = <0x0 0xf4000000 0x0 0x1000>, <0x0 0xff3fe000 0x0 0x1000>, + <0x0 0xf3f20000 0x0 0x40000>, <0x0 0xF4000000 0 0x2000>; + reg-names = "dbi","apb","phy", "config"; + bus-range = <0x0 0x1>; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x02000000 0x0 0x00000000 0x0 0xf5000000 0x0 0x2000000>; + num-lanes = <1>; + #interrupt-cells = <1>; + interrupt-map-mask = <0xf800 0 0 7>; + interrupt-map = <0x0 0 0 1 &gic 0 0 0 282 4>, + <0x0 0 0 2 &gic 0 0 0 283 4>, + <0x0 0 0 3 &gic 0 0 0 284 4>, + <0x0 0 0 4 &gic 0 0 0 285 4>; + clocks = <&crg_ctrl HI3660_PCIEPHY_REF>, + <&crg_ctrl HI3660_CLK_GATE_PCIEAUX>, + <&crg_ctrl HI3660_PCLK_GATE_PCIE_PHY>, + <&crg_ctrl HI3660_PCLK_GATE_PCIE_SYS>, + <&crg_ctrl HI3660_ACLK_GATE_PCIE>; + clock-names = "pcie_phy_ref", "pcie_aux", + "pcie_apb_phy", "pcie_apb_sys", "pcie_aclk"; + reset-gpios = <&gpio11 1 0 >; + }; -- 2.20.1