From 3c45ac08d2897aeb95ceecde25a6d4935c4ab8be Mon Sep 17 00:00:00 2001 From: Stefano Radaelli Date: Wed, 22 Jul 2026 13:33:05 +0200 Subject: [PATCH] arm64: dts: imx8qm-var-som-symphony: enable expansion header UART Enable LPUART4 and configure its pin multiplexing to expose the UART interface on the Symphony expansion header. Signed-off-by: Stefano Radaelli Signed-off-by: Frank Li --- .../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 @@ status = "okay"; }; +/* header */ +&lpuart4 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lpuart4>; + status = "okay"; +}; + &pca9534 { usb3-signal-route-hog { gpio-hog; @@ -428,6 +435,13 @@ >; }; + 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