linux-kernel - [PATCH 2/4] arm64: dts: ti: k3-am62x-sk-common: Describe main_uart1 and wkup

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Message-ID: <20230418213740.153519-3-nm@ti.com>
Date:   Tue, 18 Apr 2023 16:37:38 -0500
From:   Nishanth Menon <nm@...com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>
CC:     <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Tero Kristo <kristo@...nel.org>, Nishanth Menon <nm@...com>
Subject: [PATCH 2/4] arm64: dts: ti: k3-am62x-sk-common: Describe main_uart1 and wkup_uart

wkup_uart and main_uart1 on this platform is used by tifs and DM
firmwares. Describe them for completeness including the pinmux.

Signed-off-by: Nishanth Menon <nm@...com>
---
 .../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
index 9036af82894b..dc76529f7aa1 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -126,6 +126,15 @@ AM62X_IOPAD(0x1cc, PIN_OUTPUT, 0) /* (E14/E11) UART0_TXD */
 		>;
 	};
 
+	main_uart1_pins_default: main-uart1-pins-default {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x194, PIN_INPUT, 2) /* (B19/B18) MCASP0_AXR3.UART1_CTSn */
+			AM62X_IOPAD(0x198, PIN_OUTPUT, 2) /* (A19/B17) MCASP0_AXR2.UART1_RTSn */
+			AM62X_IOPAD(0x1ac, PIN_INPUT, 2) /* (E19/D15) MCASP0_AFSR.UART1_RXD */
+			AM62X_IOPAD(0x1b0, PIN_OUTPUT, 2) /* (A20/D16) MCASP0_ACLKR.UART1_TXD */
+		>;
+	};
+
 	main_i2c0_pins_default: main-i2c0-pins-default {
 		pinctrl-single,pins = <
 			AM62X_IOPAD(0x1e0, PIN_INPUT_PULLUP, 0) /* (B16/E12) I2C0_SCL */
@@ -220,9 +229,22 @@ AM62X_IOPAD(0x084, PIN_INPUT, 2) /* (L23) GPMC0_ADVN_ALE.MCASP1_AXR2 */
 	};
 };
 
+&mcu_pmx0 {
+	wkup_uart0_pins_default: wkup-uart0-pins-default {
+		pinctrl-single,pins = <
+			AM62X_MCU_IOPAD(0x02c, PIN_INPUT, 0) /* (C6/A7) WKUP_UART0_CTSn */
+			AM62X_MCU_IOPAD(0x030, PIN_OUTPUT, 0) /* (A4/B4) WKUP_UART0_RTSn */
+			AM62X_MCU_IOPAD(0x024, PIN_INPUT, 0) /* (B4/B5) WKUP_UART0_RXD */
+			AM62X_MCU_IOPAD(0x028, PIN_OUTPUT, 0) /* (C5/C6) WKUP_UART0_TXD */
+		>;
+	};
+};
+
 &wkup_uart0 {
 	/* WKUP UART0 is used by DM firmware */
 	status = "reserved";
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_uart0_pins_default>;
 };
 
 &main_uart0 {
@@ -234,6 +256,8 @@ &main_uart0 {
 &main_uart1 {
 	/* Main UART1 is used by TIFS firmware */
 	status = "reserved";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart1_pins_default>;
 };
 
 &main_i2c0 {
-- 
2.40.0