linux-kernel - [PATCH 3/8] arm64: dts: ti: k3-j784s4-evm: Enable wakeup

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Date:   Fri, 2 Jun 2023 16:49:32 -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>,
        Thejasvi Konduru <t-konduru@...com>,
        Dasnavis Sabiya <sabiya.d@...com>
Subject: [PATCH 3/8] arm64: dts: ti: k3-j784s4-evm: Enable wakeup_i2c0 and eeprom

Enable wakeup_i2c and use un-used pinmux. While at it, describe the
board detection eeprom present on the board.

Signed-off-by: Nishanth Menon <nm@...com>
---
Depends on https://lore.kernel.org/linux-arm-kernel/20230503083143.32369-1-t-konduru@ti.com/

 arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
index 3f499e527523..f394ab409934 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts
@@ -25,6 +25,7 @@ aliases {
 		serial2 = &main_uart8;
 		mmc0 = &main_sdhci0;
 		mmc1 = &main_sdhci1;
+		i2c0 = &wkup_i2c0;
 		i2c3 = &main_i2c0;
 	};
 
@@ -153,6 +154,13 @@ J721S2_WKUP_IOPAD(0x04c, PIN_INPUT, 0) /* (K34) WKUP_UART0_TXD */
 		>;
 	};
 
+	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x98, PIN_INPUT, 0) /* (N33) WKUP_I2C0_SCL */
+			J721S2_WKUP_IOPAD(0x9c, PIN_INPUT, 0) /* (N35) WKUP_I2C0_SDA */
+		>;
+	};
+
 	mcu_uart0_pins_default: mcu-uart0-pins-default {
 		pinctrl-single,pins = <
 			J784S4_WKUP_IOPAD(0x090, PIN_INPUT, 0) /* (H37) WKUP_GPIO0_14.MCU_UART0_CTSn */
@@ -194,6 +202,19 @@ &wkup_uart0 {
 	pinctrl-0 = <&wkup_uart0_pins_default>;
 };
 
+&wkup_i2c0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_i2c0_pins_default>;
+	clock-frequency = <400000>;
+
+	eeprom@50 {
+		/* CAV24C256WE-GT3 */
+		compatible = "atmel,24c256";
+		reg = <0x50>;
+	};
+};
+
 &mcu_uart0 {
 	status = "okay";
 	pinctrl-names = "default";
-- 
2.40.0