qcom,pcie-ep.yaml (3974B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/pci/qcom,pcie-ep.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Qualcomm PCIe Endpoint Controller binding 8 9maintainers: 10 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> 11 12allOf: 13 - $ref: "pci-ep.yaml#" 14 15properties: 16 compatible: 17 const: qcom,sdx55-pcie-ep 18 19 reg: 20 items: 21 - description: Qualcomm-specific PARF configuration registers 22 - description: DesignWare PCIe registers 23 - description: External local bus interface registers 24 - description: Address Translation Unit (ATU) registers 25 - description: Memory region used to map remote RC address space 26 - description: BAR memory region 27 28 reg-names: 29 items: 30 - const: parf 31 - const: dbi 32 - const: elbi 33 - const: atu 34 - const: addr_space 35 - const: mmio 36 37 clocks: 38 items: 39 - description: PCIe Auxiliary clock 40 - description: PCIe CFG AHB clock 41 - description: PCIe Master AXI clock 42 - description: PCIe Slave AXI clock 43 - description: PCIe Slave Q2A AXI clock 44 - description: PCIe Sleep clock 45 - description: PCIe Reference clock 46 47 clock-names: 48 items: 49 - const: aux 50 - const: cfg 51 - const: bus_master 52 - const: bus_slave 53 - const: slave_q2a 54 - const: sleep 55 - const: ref 56 57 qcom,perst-regs: 58 description: Reference to a syscon representing TCSR followed by the two 59 offsets within syscon for Perst enable and Perst separation 60 enable registers 61 $ref: "/schemas/types.yaml#/definitions/phandle-array" 62 items: 63 minItems: 3 64 maxItems: 3 65 66 interrupts: 67 items: 68 - description: PCIe Global interrupt 69 - description: PCIe Doorbell interrupt 70 71 interrupt-names: 72 items: 73 - const: global 74 - const: doorbell 75 76 reset-gpios: 77 description: GPIO used as PERST# input signal 78 maxItems: 1 79 80 wake-gpios: 81 description: GPIO used as WAKE# output signal 82 maxItems: 1 83 84 resets: 85 maxItems: 1 86 87 reset-names: 88 const: core 89 90 power-domains: 91 maxItems: 1 92 93 phys: 94 maxItems: 1 95 96 phy-names: 97 const: pciephy 98 99 num-lanes: 100 default: 2 101 102required: 103 - compatible 104 - reg 105 - reg-names 106 - clocks 107 - clock-names 108 - qcom,perst-regs 109 - interrupts 110 - interrupt-names 111 - reset-gpios 112 - resets 113 - reset-names 114 - power-domains 115 116unevaluatedProperties: false 117 118examples: 119 - | 120 #include <dt-bindings/clock/qcom,gcc-sdx55.h> 121 #include <dt-bindings/gpio/gpio.h> 122 #include <dt-bindings/interrupt-controller/arm-gic.h> 123 pcie_ep: pcie-ep@40000000 { 124 compatible = "qcom,sdx55-pcie-ep"; 125 reg = <0x01c00000 0x3000>, 126 <0x40000000 0xf1d>, 127 <0x40000f20 0xc8>, 128 <0x40001000 0x1000>, 129 <0x40002000 0x1000>, 130 <0x01c03000 0x3000>; 131 reg-names = "parf", "dbi", "elbi", "atu", "addr_space", 132 "mmio"; 133 134 clocks = <&gcc GCC_PCIE_AUX_CLK>, 135 <&gcc GCC_PCIE_CFG_AHB_CLK>, 136 <&gcc GCC_PCIE_MSTR_AXI_CLK>, 137 <&gcc GCC_PCIE_SLV_AXI_CLK>, 138 <&gcc GCC_PCIE_SLV_Q2A_AXI_CLK>, 139 <&gcc GCC_PCIE_SLEEP_CLK>, 140 <&gcc GCC_PCIE_0_CLKREF_CLK>; 141 clock-names = "aux", "cfg", "bus_master", "bus_slave", 142 "slave_q2a", "sleep", "ref"; 143 144 qcom,perst-regs = <&tcsr 0xb258 0xb270>; 145 146 interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>, 147 <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>; 148 interrupt-names = "global", "doorbell"; 149 reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>; 150 wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>; 151 resets = <&gcc GCC_PCIE_BCR>; 152 reset-names = "core"; 153 power-domains = <&gcc PCIE_GDSC>; 154 phys = <&pcie0_lane>; 155 phy-names = "pciephy"; 156 max-link-speed = <3>; 157 num-lanes = <2>; 158 };