From: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
i2c-imx can perform bus recovery by temporarily switching I2C pins
into GPIO mode. To do so, it needs GPIO and pinctrl handles to be
provided in the device tree.
Suggested-by: Denis Sergeevich <galilley@gmail.com>
Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
---
arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi | 48 +++++++++++++++++++++--
1 file changed, 44 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index 9e0e2d7271ef..ce039bd701c2 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -512,6 +512,13 @@ MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA 0x40000026
>;
};
+ pinctrl_i2c1_gpio: i2c1-gpiogrp {
+ fsl,pins = <
+ MX8MQ_IOMUXC_I2C1_SCL_GPIO5_IO14 0x26
+ MX8MQ_IOMUXC_I2C1_SDA_GPIO5_IO15 0x26
+ >;
+ };
+
pinctrl_i2c2: i2c2grp {
fsl,pins = <
MX8MQ_IOMUXC_I2C2_SCL_I2C2_SCL 0x40000026
@@ -519,6 +526,13 @@ MX8MQ_IOMUXC_I2C2_SDA_I2C2_SDA 0x40000026
>;
};
+ pinctrl_i2c2_gpio: i2c2-gpiogrp {
+ fsl,pins = <
+ MX8MQ_IOMUXC_I2C2_SCL_GPIO5_IO16 0x26
+ MX8MQ_IOMUXC_I2C2_SDA_GPIO5_IO17 0x26
+ >;
+ };
+
pinctrl_i2c3: i2c3grp {
fsl,pins = <
MX8MQ_IOMUXC_I2C3_SCL_I2C3_SCL 0x40000026
@@ -526,6 +540,13 @@ MX8MQ_IOMUXC_I2C3_SDA_I2C3_SDA 0x40000026
>;
};
+ pinctrl_i2c3_gpio: i2c3-gpiogrp {
+ fsl,pins = <
+ MX8MQ_IOMUXC_I2C3_SCL_GPIO5_IO18 0x26
+ MX8MQ_IOMUXC_I2C3_SDA_GPIO5_IO19 0x26
+ >;
+ };
+
pinctrl_i2c4: i2c4grp {
fsl,pins = <
MX8MQ_IOMUXC_I2C4_SCL_I2C4_SCL 0x40000026
@@ -533,6 +554,13 @@ MX8MQ_IOMUXC_I2C4_SDA_I2C4_SDA 0x40000026
>;
};
+ pinctrl_i2c4_gpio: i2c4-gpiogrp {
+ fsl,pins = <
+ MX8MQ_IOMUXC_I2C4_SCL_GPIO5_IO20 0x26
+ MX8MQ_IOMUXC_I2C4_SDA_GPIO5_IO21 0x26
+ >;
+ };
+
pinctrl_keys: keysgrp {
fsl,pins = <
/* VOL- */
@@ -782,8 +810,11 @@ MX8MQ_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B 0x1f
&i2c1 {
clock-frequency = <384000>;
- 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";
typec_pd: usb-pd@3f {
@@ -982,8 +1013,11 @@ rtc@68 {
&i2c2 {
clock-frequency = <384000>;
- 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)>;
status = "okay";
magnetometer: magnetometer@1e {
@@ -1031,8 +1065,11 @@ accel_gyro: accel-gyro@6a {
&i2c3 {
clock-frequency = <384000>;
- 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";
codec: audio-codec@1a {
@@ -1121,8 +1158,11 @@ touchscreen@38 {
&i2c4 {
clock-frequency = <384000>;
- 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";
vcm@c {
--
2.52.0