[PATCH] arm64: dts: imx8mn-evk: Add UART3 support

[PATCH] arm64: dts: imx8mn-evk: Add UART3 support

[Fabio Estevam]

From: Fabio Estevam <festevam@denx.de>

UART3 pins are available in the J1003 connector.

Add support for it.

Signed-off-by: Fabio Estevam <festevam@denx.de>
---
 arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
index dc75d6d13bb3..48e8d6f34b29 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi
@@ -212,6 +212,15 @@ &uart2 { /* console */
 	status = "okay";
 };
 
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart3>;
+	assigned-clocks = <&clk IMX8MN_CLK_UART3>;
+	assigned-clock-parents = <&clk IMX8MN_SYS_PLL1_80M>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
 &usbotg1 {
 	dr_mode = "otg";
 	hnp-disable;
@@ -374,6 +383,15 @@ MX8MN_IOMUXC_UART2_TXD_UART2_DCE_TX	0x140
 		>;
 	};
 
+	pinctrl_uart3: uart3grp {
+		fsl,pins = <
+			MX8MN_IOMUXC_ECSPI1_SCLK_UART3_DCE_RX		0x140
+			MX8MN_IOMUXC_ECSPI1_MOSI_UART3_DCE_TX		0x140
+			MX8MN_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B	0x140
+			MX8MN_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B	0x140
+		>;
+	};
+
 	pinctrl_usdhc2_gpio: usdhc2gpiogrp {
 		fsl,pins = <
 			MX8MN_IOMUXC_GPIO1_IO15_GPIO1_IO15	0x1c4
-- 
2.25.1


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Re: [PATCH] arm64: dts: imx8mn-evk: Add UART3 support

[Shawn Guo]

On Mon, Apr 18, 2022 at 03:36:17PM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <festevam@denx.de>
> 
> UART3 pins are available in the J1003 connector.
> 
> Add support for it.
> 
> Signed-off-by: Fabio Estevam <festevam@denx.de>

Applied, thanks!

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