* [PATCH] arm64: dts: imx8mn-evk: Add UART3 support
@ 2022-04-18 18:36 Fabio Estevam
2022-04-24 13:19 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Fabio Estevam @ 2022-04-18 18:36 UTC (permalink / raw)
To: shawnguo; +Cc: linux-arm-kernel, 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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2022-04-18 18:36 [PATCH] arm64: dts: imx8mn-evk: Add UART3 support Fabio Estevam
2022-04-24 13:19 ` Shawn Guo
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