linux-kernel - [PATCH v2 1/2] arm64: dts: ti: k3-am62x-sk-common: Add main_uart1 and wkup

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Message-ID: <20230519113434.1024206-2-n-yadav@ti.com>
Date:   Fri, 19 May 2023 17:04:33 +0530
From:   Nitin Yadav <n-yadav@...com>
To:     <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/2] arm64: dts: ti: k3-am62x-sk-common: Add main_uart1 and wkup_uart nodes

wkup_uart and main_uart1 on this platform is used by TIFS and DM
firmwares. Describe pinmux and add aliases for completeness.

Signed-off-by: Nitin Yadav <n-yadav@...com>
---
 .../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 26 +++++++++++++++++++
 1 file changed, 26 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 a61e8648f189..56a5e2eec457 100644
--- a/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62x-sk-common.dtsi
@@ -12,7 +12,9 @@
 
 / {
 	aliases {
+		serial0 = &wkup_uart0;
 		serial2 = &main_uart0;
+		serial3 = &main_uart1;
 		mmc0 = &sdhci0;
 		mmc1 = &sdhci1;
 		mmc2 = &sdhci2;
@@ -126,6 +128,15 @@ 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) MCASP0_AXR3.UART1_CTSn */
+			AM62X_IOPAD(0x198, PIN_OUTPUT, 2) /* (A19) MCASP0_AXR2.UART1_RTSn */
+			AM62X_IOPAD(0x1ac, PIN_INPUT, 2) /* (E19) MCASP0_AFSR.UART1_RXD */
+			AM62X_IOPAD(0x1b0, PIN_OUTPUT, 2) /* (A20) MCAS/mP0_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 */
@@ -220,8 +231,21 @@ 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) WKUP_UART0_CTSn */
+			AM62X_MCU_IOPAD(0x030, PIN_OUTPUT, 0) /* (A4) WKUP_UART0_RTSn */
+			AM62X_MCU_IOPAD(0x024, PIN_INPUT, 0) /* (B4) WKUP_UART0_RXD */
+			AM62X_MCU_IOPAD(0x028, PIN_OUTPUT, 0) /* (C5) WKUP_UART0_TXD */
+		>;
+	};
+};
+
 &wkup_uart0 {
 	/* WKUP UART0 is used by DM firmware */
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_uart0_pins_default>;
 	status = "reserved";
 };
 
@@ -233,6 +257,8 @@ &main_uart0 {
 
 &main_uart1 {
 	/* Main UART1 is used by TIFS firmware */
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart1_pins_default>;
 	status = "reserved";
 };
 
-- 
2.25.1