Re: [PATCH v2 5/9] arm64: dts: imx8mm-evk: add uart3 port
From: Marco Felsch <hidden>
Date: 2026-01-18 17:25:56
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imx, linux-arm-kernel, linux-kbuild, lkml
On 26-01-17, Frank Li wrote:
From: Fugang Duan <redacted> Add uart3 port.
Would be nice to know why the port is needed? If it's just a UART on the pin header I would rather keep it un-muxed to keep it easy to adapt the EVK to dev needs. Regards, Marco
quoted hunk ↗ jump to hunk
Signed-off-by: Fugang Duan <redacted> Signed-off-by: Frank Li <Frank.Li@nxp.com> --- arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi index 30b13b4d630f8b8b0531fad531081d4ee32849f9..8be44eaf4e1e0adc2921db8cc5f2dc69586b68cf 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi@@ -627,6 +627,15 @@ &uart2 { /* console */ status = "okay"; }; +&uart3 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_uart3>; + assigned-clocks = <&clk IMX8MM_CLK_UART3>; + assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>; + uart-has-rtscts; + status = "okay"; +}; + &usbphynop1 { wakeup-source; };@@ -819,6 +828,15 @@ MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x140 >; }; + pinctrl_uart3: uart3grp { + fsl,pins = < + MX8MM_IOMUXC_ECSPI1_SCLK_UART3_DCE_RX 0x140 + MX8MM_IOMUXC_ECSPI1_MOSI_UART3_DCE_TX 0x140 + MX8MM_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B 0x140 + MX8MM_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B 0x140 + >; + }; + pinctrl_usdhc2_gpio: usdhc2grpgpiogrp { fsl,pins = < MX8MM_IOMUXC_GPIO1_IO15_GPIO1_IO15 0x1c4-- 2.34.1
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