[PATCH v2 11/15] arm64: dts: imx8mn-var-som-symphony: Enable I2C4

[Stefano Radaelli]

From: Stefano Radaelli <stefano.r at variscite.com>

Enable I2C4 on the Symphony carrier and add pinctrl configuration,
including GPIO-based bus recovery support.

Signed-off-by: Stefano Radaelli <stefano.r at variscite.com>
---
v1->v2:
 - 

 .../dts/freescale/imx8mn-var-som-symphony.dts | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
index 7d016ed5e911..4898018f030c 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som-symphony.dts
@@ -195,6 +195,16 @@ rtc at 68 {
 	};
 };
 
+&i2c4 {
+	clock-frequency = <400000>;
+	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";
+};
+
 /* Header */
 &uart1 {
 	pinctrl-names = "default";
@@ -262,6 +272,20 @@ MX8MN_IOMUXC_I2C2_SDA_I2C2_SDA		0x400001c3
 		>;
 	};
 
+	pinctrl_i2c4_gpio: i2c4gpiogrp {
+		fsl,pins = <
+			MX8MN_IOMUXC_I2C4_SCL_GPIO5_IO20	0x1c3
+			MX8MN_IOMUXC_I2C4_SDA_GPIO5_IO21	0x1c3
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_I2C4_SCL_I2C4_SCL		0x400001c3
+			MX8MN_IOMUXC_I2C4_SDA_I2C4_SDA		0x400001c3
+		>;
+	};
+
 	pinctrl_pca9534: pca9534grp {
 		fsl,pins = <
 			MX8MN_IOMUXC_GPIO1_IO07_GPIO1_IO7	0x16
-- 
2.47.3