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

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Message-ID: <ff900ce3-ba9e-454b-ae79-0be06618616c@ti.com>
Date: Tue, 7 Oct 2025 13:07:22 -0500
From: Shree Ramamoorthy <s-ramamoorthy@...com>
To: Paresh Bhagat <p-bhagat@...com>, <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>
Subject: Re: [PATCH 2/2] arm64: dts: ti: k3-am62d2-evm: Enable PMIC

On 9/18/2025 10:28 PM, Paresh Bhagat wrote:
> 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;
> +			};
> +		};
> +	};
> +};
> +

The PMIC node looks correct based on tps6594.yaml + test log regulator summary.
Reviewed-by: Shree Ramamoorthy <s-ramamoorthy@...com>

>  &sdhci0 {
>  	/* eMMC */
>  	non-removable;