[PATCH v1 1/1] arm64: dts: imx8qm-var-som-symphony: enable expansion header UART

[Stefano Radaelli]

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

Enable LPUART4 and configure its pin multiplexing to expose the UART
interface on the Symphony expansion header.

Signed-off-by: Stefano Radaelli <stefano.r at variscite.com>
---
 .../boot/dts/freescale/imx8qm-var-som-symphony.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts
index c7d3073b4041..ec55b86c220d 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-var-som-symphony.dts
@@ -287,6 +287,13 @@ &lpuart2 {
 	status = "okay";
 };
 
+/* header */
+&lpuart4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_lpuart4>;
+	status = "okay";
+};
+
 &pca9534 {
 	usb3-signal-route-hog {
 		gpio-hog;
@@ -428,6 +435,13 @@ IMX8QM_LVDS0_I2C1_SDA_DMA_UART2_RX			0x06000020
 		>;
 	};
 
+	pinctrl_lpuart4: lpuart4grp {
+		fsl,pins = <
+			IMX8QM_M40_GPIO0_01_DMA_UART4_TX			0x06000020
+			IMX8QM_M40_GPIO0_00_DMA_UART4_RX			0x06000020
+		>;
+	};
+
 	pinctrl_pca9534: pca9534grp {
 		fsl,pins = <
 			IMX8QM_MIPI_CSI0_MCLK_OUT_LSIO_GPIO1_IO24		0x00000021
-- 
2.47.3