linux-kernel - [PATCH 5/6] arm64: dts: ti: k3-j721s2-common-proc-board: Add uart pinmux

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Message-ID: <20230602153554.1571128-6-nm@ti.com>
Date:   Fri, 2 Jun 2023 10:35:53 -0500
From:   Nishanth Menon <nm@...com>
To:     Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Tero Kristo <kristo@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, Nishanth Menon <nm@...com>,
        Udit Kumar <u-kumar1@...com>, Nitin Yadav <n-yadav@...com>,
        Neha Malcom Francis <n-francis@...com>,
        Sinthu Raja <sinthu.raja@...com>
Subject: [PATCH 5/6] arm64: dts: ti: k3-j721s2-common-proc-board: Add uart pinmux

Define the wakeup uart pin-mux for completeness and add explicit
muxing for mcu_uart0. This allows the device tree usage in bootloader
and firmwares that can configure the same appropriately.

Signed-off-by: Nishanth Menon <nm@...com>
---
New patch

 .../dts/ti/k3-j721s2-common-proc-board.dts    | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
index 7283ce2aadb2..cc7aa2848a92 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
@@ -146,6 +146,24 @@ J721S2_IOPAD(0x020, PIN_INPUT, 7) /* (AA23) MCAN15_RX.GPIO0_8 */
 };
 
 &wkup_pmx2 {
+	wkup_uart0_pins_default: wkup-uart0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x070, PIN_INPUT, 0) /* (E25) WKUP_GPIO0_6.WKUP_UART0_CTSn */
+			J721S2_WKUP_IOPAD(0x074, PIN_OUTPUT, 0) /* (F28) WKUP_GPIO0_7.WKUP_UART0_RTSn */
+			J721S2_WKUP_IOPAD(0x048, PIN_INPUT, 0) /* (D28) WKUP_UART0_RXD */
+			J721S2_WKUP_IOPAD(0x04c, PIN_OUTPUT, 0) /* (D27) WKUP_UART0_TXD */
+		>;
+	};
+
+	mcu_uart0_pins_default: mcu-uart0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x090, PIN_INPUT, 0) /* (B24) WKUP_GPIO0_14.MCU_UART0_CTSn */
+			J721S2_WKUP_IOPAD(0x094, PIN_OUTPUT, 0) /* (D25) WKUP_GPIO0_15.MCU_UART0_RTSn */
+			J721S2_WKUP_IOPAD(0x08c, PIN_INPUT, 0) /* (C24) WKUP_GPIO0_13.MCU_UART0_RXD */
+			J721S2_WKUP_IOPAD(0x088, PIN_OUTPUT, 0) /* (C25) WKUP_GPIO0_12.MCU_UART0_TXD */
+		>;
+	};
+
 	mcu_cpsw_pins_default: mcu-cpsw-pins-default {
 		pinctrl-single,pins = <
 			J721S2_WKUP_IOPAD(0x02c, PIN_INPUT, 0) /* (B22) MCU_RGMII1_RD0 */
@@ -242,11 +260,14 @@ &wkup_gpio1 {
 
 &wkup_uart0 {
 	status = "reserved";
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_uart0_pins_default>;
 };
 
 &mcu_uart0 {
 	status = "okay";
-	/* Default pinmux */
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_uart0_pins_default>;
 };
 
 &main_uart8 {
-- 
2.40.0