ARM: dts: i.MX51: digi-connectcore-som: Add support for I2C bus recovery

Define the required properties to enable I2C bus recovery supported by
the I2C subsystem.
This patch adds GPIO based I2C fault injector for Digi Connectcore SOM.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx51-digi-connectcore-som.dtsi b/arch/arm/boot/dts/imx51-digi-connectcore-som.dtsi
index a2a6408203e3ec9464c717379ee3511d30b2ca6b..d90ba5fe4f1bf67ecd2c3b5d650ed6f9b655b53e 100644 (file)
--- a/arch/arm/boot/dts/imx51-digi-connectcore-som.dtsi
+++ b/arch/arm/boot/dts/imx51-digi-connectcore-som.dtsi
@@ -174,9 +174,12 @@ &fec {
 };
 
 &i2c2 {
-       pinctrl-names = "default";
+       pinctrl-names = "default", "gpio";
        pinctrl-0 = <&pinctrl_i2c2>;
+       pinctrl-1 = <&pinctrl_i2c2_gpio>;
        clock-frequency = <400000>;
+       scl-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+       sda-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
        status = "okay";
 
        mma7455l@1d {
@@ -290,6 +293,13 @@ MX51_PAD_GPIO1_3__I2C2_SDA         0x400001ed
                        >;
                };
 
+               pinctrl_i2c2_gpio: i2c2gpiogrp {
+                       fsl,pins = <
+                               MX51_PAD_GPIO1_2__GPIO1_2               0x400001ed
+                               MX51_PAD_GPIO1_3__GPIO1_3               0x400001ed
+                       >;
+               };
+
                pinctrl_nfc: nfcgrp {
                        fsl,pins = <
                                MX51_PAD_NANDF_D0__NANDF_D0             0x80000000