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@xxxxxxxxxxxxxx>
---
.../arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi | 48 ++++++++++++++++++++--
1 file changed, 44 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
index 9dca829581137bc0c3026caf7cda112b859ec092..47087624e557c9c961ec4479cee4fedac6328748 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-reva.dtsi
@@ -222,8 +222,11 @@ &flexcan2 {
&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 {
@@ -315,14 +318,20 @@ reg_nvcc_sd2: LDO5 {
};
&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 = <100000>;
- 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 {
@@ -337,8 +346,11 @@ i2c_rtc: rtc@51 {
&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 {
@@ -543,6 +555,13 @@ MX8MP_IOMUXC_I2C1_SDA__I2C1_SDA 0x400001c2
>;
};
+ 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
@@ -550,6 +569,13 @@ MX8MP_IOMUXC_I2C2_SDA__I2C2_SDA 0x400001c2
>;
};
+ 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
@@ -557,6 +583,13 @@ MX8MP_IOMUXC_I2C3_SDA__I2C3_SDA 0x400001c2
>;
};
+ 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
@@ -564,6 +597,13 @@ MX8MP_IOMUXC_I2C4_SDA__I2C4_SDA 0x400001c3
>;
};
+ 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
--
2.39.5
