ARM: dts: imx6-tx6: add support for I2C bus recovery

Define the required properties to enable I2C bus recovery supported by
the I2C subsystem.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
index eb5accd..c140402 100644 (file)
--- a/arch/arm/boot/dts/imx6qdl-tx6.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
@@ -311,8 +311,11 @@
 };
 
 &i2c1 {
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c1>;
+       pinctrl-1 = <&pinctrl_i2c1_gpio>;
+       scl-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
+       sda-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>;
        clock-frequency = <400000>;
        status = "okay";
 
@@ -325,8 +328,11 @@
 };
 
 &i2c3 {
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c3>;
+       pinctrl-1 = <&pinctrl_i2c3_gpio>;
+       scl-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
+       sda-gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
        clock-frequency = <400000>;
        status = "okay";
 
@@ -552,6 +558,13 @@
                >;
        };
 
+       pinctrl_i2c1_gpio: i2c1-gpiogrp {
+               fsl,pins = <
+                       MX6QDL_PAD_EIM_D21__GPIO3_IO21          0x4001b8b1
+                       MX6QDL_PAD_EIM_D28__GPIO3_IO28          0x4001b8b1
+               >;
+       };
+
        pinctrl_i2c3: i2c3grp {
                fsl,pins = <
                        MX6QDL_PAD_GPIO_3__I2C3_SCL             0x4001b8b1
@@ -559,6 +572,13 @@
                >;
        };
 
+       pinctrl_i2c3_gpio: i2c3-gpiogrp {
+               fsl,pins = <
+                       MX6QDL_PAD_GPIO_3__GPIO1_IO03           0x4001b8b1
+                       MX6QDL_PAD_GPIO_6__GPIO1_IO06           0x4001b8b1
+               >;
+       };
+
        pinctrl_kpp: kppgrp {
                fsl,pins = <
                        MX6QDL_PAD_GPIO_9__KEY_COL6             0x1b0b1