diff options
| author | Richard Zhu <hongxing.zhu@nxp.com> | 2021-12-02 11:02:37 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2022-02-11 06:16:17 +0300 |
| commit | b4d36c10bf173ab430df89ed28a22237d3df1b5e (patch) | |
| tree | 18545578bb423f85e128ebcec494942bf72a74b8 /arch/arm64/boot | |
| parent | aaeba6a8e226bf7fa1e3547f33c1577665c4d874 (diff) | |
| download | linux-b4d36c10bf173ab430df89ed28a22237d3df1b5e.tar.xz | |
arm64: dts: imx8mm-evk: Add the pcie support on imx8mm evk board
Add the PCIe support on iMX8MM EVK boards.
And set the default reference clock mode.
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Tim Harvey <tharvey@gateworks.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64/boot')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index 3bac87b7e142..6d67df7692f1 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi @@ -5,6 +5,7 @@ /dts-v1/; +#include <dt-bindings/phy/phy-imx8-pcie.h> #include <dt-bindings/usb/pd.h> #include "imx8mm.dtsi" @@ -30,6 +31,23 @@ }; }; + pcie0_refclk: pcie0-refclk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <100000000>; + }; + + reg_pcie0: regulator-pcie { + compatible = "regulator-fixed"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0_reg>; + regulator-name = "MPCIE_3V3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>; + enable-active-high; + }; + reg_usdhc2_vmmc: regulator-usdhc2 { compatible = "regulator-fixed"; pinctrl-names = "default"; @@ -296,6 +314,30 @@ }; }; +&pcie_phy { + fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>; + fsl,tx-deemph-gen1 = <0x2d>; + fsl,tx-deemph-gen2 = <0xf>; + clocks = <&pcie0_refclk>; + status = "okay"; +}; + +&pcie0 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pcie0>; + reset-gpio = <&gpio4 21 GPIO_ACTIVE_LOW>; + clocks = <&clk IMX8MM_CLK_PCIE1_ROOT>, <&clk IMX8MM_CLK_PCIE1_AUX>, + <&pcie0_refclk>; + clock-names = "pcie", "pcie_aux", "pcie_bus"; + assigned-clocks = <&clk IMX8MM_CLK_PCIE1_AUX>, + <&clk IMX8MM_CLK_PCIE1_CTRL>; + assigned-clock-rates = <10000000>, <250000000>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL2_50M>, + <&clk IMX8MM_SYS_PLL2_250M>; + vpcie-supply = <®_pcie0>; + status = "okay"; +}; + &sai3 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai3>; @@ -413,6 +455,19 @@ >; }; + pinctrl_pcie0: pcie0grp { + fsl,pins = < + MX8MM_IOMUXC_I2C4_SCL_PCIE1_CLKREQ_B 0x61 + MX8MM_IOMUXC_SAI2_RXFS_GPIO4_IO21 0x41 + >; + }; + + pinctrl_pcie0_reg: pcie0reggrp { + fsl,pins = < + MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x41 + >; + }; + pinctrl_pmic: pmicirqgrp { fsl,pins = < MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x141 |