fsl,imx8-pcie-phy.yaml (2376B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/phy/fsl,imx8-pcie-phy.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Freescale i.MX8 SoC series PCIe PHY Device Tree Bindings 8 9maintainers: 10 - Richard Zhu <hongxing.zhu@nxp.com> 11 12properties: 13 "#phy-cells": 14 const: 0 15 16 compatible: 17 enum: 18 - fsl,imx8mm-pcie-phy 19 20 reg: 21 maxItems: 1 22 23 clocks: 24 maxItems: 1 25 26 clock-names: 27 items: 28 - const: ref 29 30 resets: 31 maxItems: 1 32 33 reset-names: 34 items: 35 - const: pciephy 36 37 fsl,refclk-pad-mode: 38 description: | 39 Specifies the mode of the refclk pad used. It can be UNUSED(PHY 40 refclock is derived from SoC internal source), INPUT(PHY refclock 41 is provided externally via the refclk pad) or OUTPUT(PHY refclock 42 is derived from SoC internal source and provided on the refclk pad). 43 Refer include/dt-bindings/phy/phy-imx8-pcie.h for the constants 44 to be used. 45 $ref: /schemas/types.yaml#/definitions/uint32 46 enum: [ 0, 1, 2 ] 47 48 fsl,tx-deemph-gen1: 49 description: Gen1 De-emphasis value (optional). 50 $ref: /schemas/types.yaml#/definitions/uint32 51 default: 0 52 53 fsl,tx-deemph-gen2: 54 description: Gen2 De-emphasis value (optional). 55 $ref: /schemas/types.yaml#/definitions/uint32 56 default: 0 57 58 fsl,clkreq-unsupported: 59 type: boolean 60 description: A boolean property indicating the CLKREQ# signal is 61 not supported in the board design (optional) 62 63required: 64 - "#phy-cells" 65 - compatible 66 - reg 67 - clocks 68 - clock-names 69 - fsl,refclk-pad-mode 70 71additionalProperties: false 72 73examples: 74 - | 75 #include <dt-bindings/clock/imx8mm-clock.h> 76 #include <dt-bindings/phy/phy-imx8-pcie.h> 77 #include <dt-bindings/reset/imx8mq-reset.h> 78 79 pcie_phy: pcie-phy@32f00000 { 80 compatible = "fsl,imx8mm-pcie-phy"; 81 reg = <0x32f00000 0x10000>; 82 clocks = <&clk IMX8MM_CLK_PCIE1_PHY>; 83 clock-names = "ref"; 84 assigned-clocks = <&clk IMX8MM_CLK_PCIE1_PHY>; 85 assigned-clock-rates = <100000000>; 86 assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_100M>; 87 resets = <&src IMX8MQ_RESET_PCIEPHY>; 88 reset-names = "pciephy"; 89 fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>; 90 #phy-cells = <0>; 91 }; 92...