linux-kernel - Re: [PATCH v2 1/7] arm64: dts: ti: j721e-sk: Add DT nodes for power regulators

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Message-ID: <44c3ec3d-2fa3-4a61-8c93-5ef4791fcf8a@ti.com>
Date: Fri, 11 Apr 2025 19:04:36 +0530
From: "Kumar, Udit" <u-kumar1@...com>
To: Yemike Abhilash Chandra <y-abhilashchandra@...com>, <nm@...com>,
        <vigneshr@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <vaishnav.a@...com>, <jai.luthra@...ux.dev>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <imx@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
        <stable@...r.kernel.org>, <u-kumar1@...com>
Subject: Re: [PATCH v2 1/7] arm64: dts: ti: j721e-sk: Add DT nodes for power
 regulators


On 4/9/2025 7:11 PM, Yemike Abhilash Chandra wrote:
> Add device tree nodes for two power regulators on the J721E SK board.
> vsys_5v0: A fixed regulator representing the 5V supply output from the
> LM61460 and vdd_sd_dv: A GPIO-controlled TLV71033 regulator.
>
> J721E-SK schematics: https://www.ti.com/lit/zip/sprr438
> Fixes: 1bfda92a3a36 ("arm64: dts: ti: Add support for J721E SK")

For me does not looks like a fix, you can adding missing nodes


> Cc: stable@...r.kernel.org
> Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@...com>
> ---
>   arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 31 ++++++++++++++++++++++++++
>   1 file changed, 31 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
> index 440ef57be294..4965957e6545 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
> +++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
> @@ -184,6 +184,17 @@ vsys_3v3: fixedregulator-vsys3v3 {
>   		regulator-boot-on;
>   	};
>   
> +	vsys_5v0: fixedregulator-vsys5v0 {
> +		/* Output of LM61460 */
> +		compatible = "regulator-fixed";
> +		regulator-name = "vsys_5v0";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		vin-supply = <&vusb_main>;
> +		regulator-always-on;
> +		regulator-boot-on;
> +	};
> +
>   	vdd_mmc1: fixedregulator-sd {
>   		compatible = "regulator-fixed";
>   		pinctrl-names = "default";
> @@ -211,6 +222,20 @@ vdd_sd_dv_alt: gpio-regulator-tps659411 {
>   			 <3300000 0x1>;
>   	};
>   
> +	vdd_sd_dv: gpio-regulator-TLV71033 {
> +		compatible = "regulator-gpio";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vdd_sd_dv_pins_default>;
> +		regulator-name = "tlv71033";
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <3300000>;
> +		regulator-boot-on;
> +		vin-supply = <&vsys_5v0>;
> +		gpios = <&main_gpio0 118 GPIO_ACTIVE_HIGH>;
> +		states = <1800000 0x0>,
> +			 <3300000 0x1>;
> +	};
> +
>   	transceiver1: can-phy1 {
>   		compatible = "ti,tcan1042";
>   		#phy-cells = <0>;
> @@ -613,6 +638,12 @@ J721E_WKUP_IOPAD(0xd4, PIN_OUTPUT, 7) /* (G26) WKUP_GPIO0_9 */
>   		>;
>   	};
>   
> +	vdd_sd_dv_pins_default: vdd-sd-dv-default-pins {
> +		pinctrl-single,pins = <
> +			J721E_IOPAD(0x1dc, PIN_INPUT, 7) /* (Y1) SPI1_CLK.GPIO0_118 */

Shouldn't be this pin be output to control regulator ?


> +		>;
> +	};
> +
>   	wkup_uart0_pins_default: wkup-uart0-default-pins {
>   		pinctrl-single,pins = <
>   			J721E_WKUP_IOPAD(0xa0, PIN_INPUT, 0) /* (J29) WKUP_UART0_RXD */