From: Francesco Dolcini <francesco.dolcini@toradex.com>
Date: Thu, 9 Apr 2026 09:58:48 +0000 (+0200)
Subject: arm64: dts: freescale: imx8mm-verdin: Split UART_2 pinctrl group
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=64819436679b7991d17fe498539b41eb2aacd05b;p=thirdparty%2Flinux.git

arm64: dts: freescale: imx8mm-verdin: Split UART_2 pinctrl group

Some carrier board reuse the UART_2 control signals as GPIO, split
the pinctrl RTS/CTS in separated nodes to maximize flexibility.

Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
index 1594ce9182a5..5fc177f589cb 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
@@ -735,7 +735,7 @@
 /* Verdin UART_2 */
 &uart3 {
 	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_uart3>;
+	pinctrl-0 = <&pinctrl_uart3>, <&pinctrl_uart3_cts>, <&pinctrl_uart3_rts>;
 	uart-has-rtscts;
 };
 
@@ -1144,12 +1144,20 @@
 			<MX8MM_IOMUXC_SAI3_TXFS_UART2_DCE_RX		0x146>;	/* SODIMM 129 */
 	};
 
+	pinctrl_uart3_cts: uart3ctsgrp {
+		fsl,pins =
+			<MX8MM_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B	0x146>;	/* SODIMM 143 */
+	};
+
+	pinctrl_uart3_rts: uart3rtsgrp {
+		fsl,pins =
+			<MX8MM_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B	0x146>;	/* SODIMM 141 */
+	};
+
 	pinctrl_uart3: uart3grp {
 		fsl,pins =
-			<MX8MM_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B	0x146>,	/* SODIMM 141 */
 			<MX8MM_IOMUXC_ECSPI1_MOSI_UART3_DCE_TX		0x146>,	/* SODIMM 139 */
-			<MX8MM_IOMUXC_ECSPI1_SCLK_UART3_DCE_RX		0x146>,	/* SODIMM 137 */
-			<MX8MM_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B	0x146>;	/* SODIMM 143 */
+			<MX8MM_IOMUXC_ECSPI1_SCLK_UART3_DCE_RX		0x146>;	/* SODIMM 137 */
 	};
 
 	pinctrl_uart4: uart4grp {