arm64: dts: imx8mp-skov: describe I2C bus recovery for all controllers

I2C bus recovery can be used to recover when SCL/SDA are stuck low.
To be able to use it, add the necessary GPIO and pinctrl entries.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
index e1a8aed511cd2a67a15356bc23b0e0a3f336b522..29951a36e43eb3c59fbbb18917463742b66a9395 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
@@ -241,8 +241,11 @@
 
 &i2c1 {
        clock-frequency = <100000>;
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c1>;
+       pinctrl-1 = <&pinctrl_i2c1_gpio>;
+       scl-gpios = <&gpio5 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&gpio5 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
        status = "okay";
 
        pmic@25 {
@@ -334,14 +337,20 @@
 };
 
 &i2c2 {
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c2>;
+       pinctrl-1 = <&pinctrl_i2c2_gpio>;
+       scl-gpios = <&gpio5 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 };
 
 &i2c3 {
        clock-frequency = <400000>;
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c3>;
+       pinctrl-1 = <&pinctrl_i2c3_gpio>;
+       scl-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
        status = "okay";
 
        i2c_rtc: rtc@51 {
@@ -356,8 +365,11 @@
 
 &i2c4 {
        clock-frequency = <380000>;
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c4>;
+       pinctrl-1 = <&pinctrl_i2c4_gpio>;
+       scl-gpios = <&gpio5 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&gpio5 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
        status = "okay";
 
        switch: switch@5f {
@@ -569,6 +581,13 @@
                >;
        };
 
+       pinctrl_i2c1_gpio: i2c1gpiogrp {
+               fsl,pins = <
+                       MX8MP_IOMUXC_I2C1_SCL__GPIO5_IO14                       0x400001c2
+                       MX8MP_IOMUXC_I2C1_SDA__GPIO5_IO15                       0x400001c2
+               >;
+       };
+
        pinctrl_i2c2: i2c2grp {
                fsl,pins = <
                        MX8MP_IOMUXC_I2C2_SCL__I2C2_SCL                         0x400001c2
@@ -576,6 +595,13 @@
                >;
        };
 
+       pinctrl_i2c2_gpio: i2c2gpiogrp {
+               fsl,pins = <
+                       MX8MP_IOMUXC_I2C2_SCL__GPIO5_IO16                       0x400001c2
+                       MX8MP_IOMUXC_I2C2_SDA__GPIO5_IO17                       0x400001c2
+               >;
+       };
+
        pinctrl_i2c3: i2c3grp {
                fsl,pins = <
                        MX8MP_IOMUXC_I2C3_SCL__I2C3_SCL                         0x400001c2
@@ -583,6 +609,13 @@
                >;
        };
 
+       pinctrl_i2c3_gpio: i2c3gpiogrp {
+               fsl,pins = <
+                       MX8MP_IOMUXC_I2C3_SCL__GPIO5_IO18                       0x400001c2
+                       MX8MP_IOMUXC_I2C3_SDA__GPIO5_IO19                       0x400001c2
+               >;
+       };
+
        pinctrl_i2c4: i2c4grp {
                fsl,pins = <
                        MX8MP_IOMUXC_I2C4_SCL__I2C4_SCL                         0x400001c3
@@ -590,6 +623,13 @@
                >;
        };
 
+       pinctrl_i2c4_gpio: i2c4gpiogrp {
+               fsl,pins = <
+                       MX8MP_IOMUXC_I2C4_SCL__GPIO5_IO20                       0x400001c3
+                       MX8MP_IOMUXC_I2C4_SDA__GPIO5_IO21                       0x400001c3
+               >;
+       };
+
        pinctrl_pmic: pmicirqgrp {
                fsl,pins = <
                        MX8MP_IOMUXC_GPIO1_IO03__GPIO1_IO03                     0x41