linux-kernel - [PATCH] arm64: dts: ti: k3-j722s-evm: Add pinmux for RPi Header

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Message-ID: <20241028082426.1551816-1-b-kapoor@ti.com>
Date: Mon, 28 Oct 2024 13:54:26 +0530
From: Bhavya Kapoor <b-kapoor@...com>
To: <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>
CC: <s-sinha@...com>, <ankurbaranwal@...com>, <b-kapoor@...com>,
        <u-kumar1@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <conor+dt@...nel.org>, <krzk+dt@...nel.org>, <robh@...nel.org>,
        <kristo@...nel.org>, <vigneshr@...com>, <nm@...com>
Subject: [PATCH] arm64: dts: ti: k3-j722s-evm: Add pinmux for RPi Header

Add pinmux required to bring out the i2c and gpios on
40-pin RPi expansion header on the J722S EVM.

Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
Signed-off-by: Shreyash Sinha <s-sinha@...com>
---

Rebased To - next-20241025

 arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 62 +++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index a00f4a7d20d9..7dce021a8a3c 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -359,6 +359,32 @@ audio_ext_refclk1_pins_default: audio-ext-refclk1-default-pins {
 			J722S_IOPAD(0x00a0, PIN_OUTPUT, 1) /* (N24) GPMC0_WPn.AUDIO_EXT_REFCLK1 */
 		>;
 	};
+
+	rpi_header_gpio0_pins_default: rpi-header-gpio0-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x094, PIN_INPUT, 7) /* (P26) GPIO0_36 */
+			J722S_IOPAD(0x088, PIN_INPUT, 7) /* (N22) GPIO0_33 */
+			J722S_IOPAD(0x0ac, PIN_INPUT, 7) /* (P21) GPIO0_42 */
+			J722S_IOPAD(0x0a8, PIN_INPUT, 7) /* (R27) GPIO0_41 */
+		>;
+	};
+
+	rpi_header_gpio1_pins_default: rpi-header-gpio1-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x1b0, PIN_INPUT, 7) /* (F24) GPIO1_14 */
+			J722S_IOPAD(0x1ac, PIN_INPUT, 7) /* (C27) GPIO1_13 */
+			J722S_IOPAD(0x198, PIN_INPUT, 7) /* (A26) GPIO1_8 */
+			J722S_IOPAD(0x1a4, PIN_INPUT, 7) /* (D25) GPIO1_11 */
+			J722S_IOPAD(0x194, PIN_INPUT, 7) /* (A25) GPIO1_7 */
+			J722S_IOPAD(0x1b8, PIN_INPUT, 7) /* (C20) GPIO1_16 */
+			J722S_IOPAD(0x1a8, PIN_INPUT, 7) /* (C26) GPIO1_12 */
+			J722S_IOPAD(0x1a0, PIN_INPUT, 7) /* (F23) GPIO1_10 */
+			J722S_IOPAD(0x19c, PIN_INPUT, 7) /* (B25) GPIO1_9 */
+			J722S_IOPAD(0x1b4, PIN_INPUT, 7) /* (B20) GPIO1_15 */
+			J722S_IOPAD(0x1bc, PIN_INPUT, 7) /* (D20) GPIO1_17 */
+			J722S_IOPAD(0x1c0, PIN_INPUT, 7) /* (E19) GPIO1_18 */
+		>;
+	};
 };
 
 &cpsw3g {
@@ -387,6 +413,8 @@ &cpsw_port1 {
 };
 
 &main_gpio1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rpi_header_gpio1_pins_default>;
 	status = "okay";
 };
 
@@ -443,6 +471,25 @@ J722S_MCU_IOPAD(0x050, PIN_INPUT_PULLUP, 0)	/* (C6) WKUP_I2C1_SDA */
 		>;
 		bootph-all;
 	};
+
+	mcu_rpi_header_gpio0_pins_default: mcu-rpi-header-gpio0-default-pins {
+		pinctrl-single,pins = <
+			J722S_MCU_IOPAD(0x01c, PIN_INPUT, 7) /* (B5) MCU_GPIO0_7 */
+			J722S_MCU_IOPAD(0x020, PIN_INPUT, 7) /* (C5) MCU_GPIO0_8 */
+			J722S_MCU_IOPAD(0x00c, PIN_INPUT, 7) /* (B12) MCU_GPIO0_3 */
+			J722S_MCU_IOPAD(0x010, PIN_INPUT, 7) /* (C11) MCU_GPIO0_4 */
+			J722S_MCU_IOPAD(0x008, PIN_INPUT, 7) /* (A9) MCU_GPIO0_2 */
+			J722S_MCU_IOPAD(0x000, PIN_INPUT, 7) /* (C12) MCU_GPIO0_0 */
+			J722S_MCU_IOPAD(0x004, PIN_INPUT, 7) /* (A10) MCU_GPIO0_1 */
+		>;
+	};
+
+	mcu_i2c0_pins_default: mcu-i2c0-default-pins {
+		pinctrl-single,pins = <
+			J722S_MCU_IOPAD(0x048, PIN_INPUT, 0) /* (E11) MCU_I2C0_SDA */
+			J722S_MCU_IOPAD(0x044, PIN_INPUT, 0) /* (B13) MCU_I2C0_SCL */
+		>;
+	};
 };
 
 &wkup_uart0 {
@@ -810,5 +857,20 @@ &main_mcan0 {
 };
 
 &mcu_gpio0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_rpi_header_gpio0_pins_default>;
+	status = "okay";
+};
+
+&main_gpio0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rpi_header_gpio0_pins_default>;
+	status = "okay";
+};
+
+&mcu_i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mcu_i2c0_pins_default>;
+	clock-frequency = <400000>;
 	status = "okay";
 };
-- 
2.34.1