linux-kernel - [PATCH 2/2] arm64: dts: ti: k3-am62d2-evm: Enable PMIC

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Message-ID: <20250919032806.707926-3-p-bhagat@ti.com>
Date: Fri, 19 Sep 2025 08:58:06 +0530
From: Paresh Bhagat <p-bhagat@...com>
To: <nm@...com>, <vigneshr@...com>, <praneeth@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <khasim@...com>, <v-singh1@...com>, <afd@...com>, <bb@...com>,
        <s-ramamoorthy@...com>
Subject: [PATCH 2/2] arm64: dts: ti: k3-am62d2-evm: Enable PMIC

Add support for TPS65224 PMIC family on wakeup I2C0 bus. This 
device provides regulators (bucks and LDOs), along with GPIOs, 
and monitors SOC's MCU error signal.

Signed-off-by: Paresh Bhagat <p-bhagat@...com>
---
 arch/arm64/boot/dts/ti/k3-am62d2-evm.dts | 91 ++++++++++++++++++++++++
 1 file changed, 91 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
index 9a74df221f2a..155abd97b799 100644
--- a/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62d2-evm.dts
@@ -214,6 +214,14 @@ AM62DX_MCU_IOPAD(0x0030, PIN_OUTPUT, 0) /* (C8) WKUP_UART0_RTSn */
 		>;
 		bootph-all;
 	};
+
+	wkup_i2c0_pins_default: wkup-i2c0-default-pins {
+		pinctrl-single,pins = <
+			AM62DX_MCU_IOPAD(0x004c, PIN_INPUT, 0) /* (D13) WKUP_I2C0_SCL */
+			AM62DX_MCU_IOPAD(0x0050, PIN_INPUT, 0) /* (E13) WKUP_I2C0_SDA */
+		>;
+		bootph-all;
+	};
 };
 
 /* WKUP UART0 is used for DM firmware logs */
@@ -464,6 +472,89 @@ &main_i2c2 {
 	status = "okay";
 };
 
+&wkup_i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&wkup_i2c0_pins_default>;
+	clock-frequency = <400000>;
+	status = "okay";
+
+	tps65224: pmic@48 {
+		compatible = "ti,tps65224-q1";
+		reg = <0x48>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pmic_irq_pins_default>;
+		interrupt-parent = <&main_gpio1>;
+		interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
+		ti,primary-pmic;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		buck12-supply = <&vcc_3v3_sys>;
+		buck3-supply = <&vcc_3v3_sys>;
+		buck4-supply = <&vcc_3v3_sys>;
+		ldo1-supply = <&vcc_3v3_sys>;
+		ldo2-supply = <&vcc_3v3_sys>;
+		ldo3-supply = <&vcc_3v3_sys>;
+
+		regulators {
+			buck12: buck12 {
+				regulator-name = "vdd_core";
+				regulator-min-microvolt = <850000>;
+				regulator-max-microvolt = <850000>;
+				regulator-boot-on;
+				regulator-always-on;
+				bootph-all;
+			};
+
+			buck3: buck3 {
+				regulator-name = "dvdd1v8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-boot-on;
+				regulator-always-on;
+				bootph-all;
+			};
+
+			buck4: buck4 {
+				regulator-name = "vdds_ddr";
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-boot-on;
+				regulator-always-on;
+				bootph-all;
+			};
+
+			ldo1: ldo1 {
+				regulator-name = "vdda_1v8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-boot-on;
+				regulator-always-on;
+				bootph-all;
+			};
+
+			ldo2: ldo2 {
+				regulator-name = "dvdd3v3";
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-boot-on;
+				regulator-always-on;
+				bootph-all;
+			};
+
+			ldo3: ldo3 {
+				regulator-name = "vddr_core";
+				regulator-min-microvolt = <850000>;
+				regulator-max-microvolt = <850000>;
+				regulator-boot-on;
+				regulator-always-on;
+				bootph-all;
+			};
+		};
+	};
+};
+
 &sdhci0 {
 	/* eMMC */
 	non-removable;
-- 
2.34.1