From 903c29493e6a0c5d9d34d13e162fb2ce6182d88b Mon Sep 17 00:00:00 2001 From: Francesco Dolcini Date: Tue, 24 Mar 2026 10:36:58 +0100 Subject: [PATCH] arm64: dts: ti: k3-am62-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 Link: https://patch.msgid.link/20260324093705.26730-4-francesco@dolcini.it Signed-off-by: Vignesh Raghavendra --- arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi index 20dbfa3001ea..e97b2b047d10 100644 --- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi @@ -820,15 +820,27 @@ AM62X_MCU_IOPAD(0x0084, PIN_OUTPUT, 0) /* (A12) WKUP_CLKOUT0 */ /* SODIMM 91 */ >; }; - /* Verdin UART_2 */ + /* Verdin UART_2 RX/TX */ pinctrl_wkup_uart0: wkup-uart0-default-pins { pinctrl-single,pins = < - AM62X_MCU_IOPAD(0x002c, PIN_INPUT_PULLUP, 0) /* (C6) WKUP_UART0_CTSn */ /* SODIMM 143 */ - AM62X_MCU_IOPAD(0x0030, PIN_OUTPUT, 0) /* (A4) WKUP_UART0_RTSn */ /* SODIMM 141 */ AM62X_MCU_IOPAD(0x0024, PIN_INPUT_PULLUP, 0) /* (B4) WKUP_UART0_RXD */ /* SODIMM 137 */ AM62X_MCU_IOPAD(0x0028, PIN_OUTPUT, 0) /* (C5) WKUP_UART0_TXD */ /* SODIMM 139 */ >; }; + + /* Verdin UART_2 CTS */ + pinctrl_wkup_uart0_cts: wkup-uart0-cts-default-pins { + pinctrl-single,pins = < + AM62X_MCU_IOPAD(0x002c, PIN_INPUT_PULLUP, 0) /* (C6) WKUP_UART0_CTSn */ /* SODIMM 143 */ + >; + }; + + /* Verdin UART_2 RTS */ + pinctrl_wkup_uart0_rts: wkup-uart0-rts-default-pins { + pinctrl-single,pins = < + AM62X_MCU_IOPAD(0x0030, PIN_OUTPUT, 0) /* (A4) WKUP_UART0_RTSn */ /* SODIMM 141 */ + >; + }; }; /* VERDIN I2S_1_MCLK */ @@ -1502,7 +1514,7 @@ &usb1 { /* Verdin UART_2 */ &wkup_uart0 { pinctrl-names = "default"; - pinctrl-0 = <&pinctrl_wkup_uart0>; + pinctrl-0 = <&pinctrl_wkup_uart0>, <&pinctrl_wkup_uart0_cts>, <&pinctrl_wkup_uart0_rts>; status = "disabled"; };