mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-24 01:41:39 +00:00
Code Issues Releases Wiki Activity

arm64: dts: imx8mm-evk: Add the pcie support on imx8mm evk board

Browse source 
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>
This commit is contained in:
Richard Zhu 2021-12-02 16:02:37 +08:00 committed by Shawn Guo
parent aaeba6a8e2
commit b4d36c10bf
1 changed files with 55 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

55
arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
View file

@ -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 @@ status {
};
};
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 @@ pca6416: gpio@20 {
};
};
&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 = <&reg_pcie0>;
status = "okay";
};
&sai3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai3>;
@ -413,6 +455,19 @@ MX8MM_IOMUXC_I2C3_SDA_I2C3_SDA 0x400001c3
>;
};
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