[PATCH v2 1/4] arm64: dts: imx8qm-ss-dma: add lpuart4 node

From: Frank . Li

Date: Thu Jul 09 2026 - 16:30:29 EST


From: Frank Li <Frank.Li@xxxxxxx>

Add lpuart4 node for imx8qm.

Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
change in v4
- remove power-domain-names, found by sashiko
---
arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
index 974e193f8dcb9..738c6f05c4ea6 100644
--- a/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi
@@ -8,6 +8,21 @@
/delete-node/ &adma_pwm_lpcg;

&dma_subsys {
+ lpuart4: serial@5a0a0000 {
+ compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
+ reg = <0x5a0a0000 0x1000>;
+ interrupts = <GIC_SPI 349 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-parent = <&gic>;
+ clocks = <&uart4_lpcg IMX_LPCG_CLK_4>, <&uart4_lpcg IMX_LPCG_CLK_0>;
+ clock-names = "ipg", "baud";
+ assigned-clocks = <&clk IMX_SC_R_UART_4 IMX_SC_PM_CLK_PER>;
+ assigned-clock-rates = <80000000>;
+ power-domains = <&pd IMX_SC_R_UART_4>;
+ dmas = <&edma2 20 0 FSL_EDMA_RX>, <&edma2 21 0 0>;
+ dma-names = "rx","tx";
+ status = "disabled";
+ };
+
uart4_lpcg: clock-controller@5a4a0000 {
compatible = "fsl,imx8qxp-lpcg";
reg = <0x5a4a0000 0x10000>;

--
2.43.0