Re: [PATCH v2 2/7] arm64: dts: ti: am68-sk: Fix regulator hierarchy

["Kumar, Udit" <u-kumar1@ti.com>]

On 4/9/2025 7:11 PM, Yemike Abhilash Chandra wrote:
> Update the vin-supply of the TLV71033 regulator from LM5141 (vsys_3v3) to
> LM61460 (vsys_5v0) to match the schematics. Add a fixed regulator node for
> the LM61460 5V supply to support this change.
>
> AM68-SK schematics: https://www.ti.com/lit/zip/sprr463
> Fixes: a266c180b398 ("arm64: dts: ti: k3-am68-sk: Add support for AM68 SK base board")
> Cc: stable@vger.kernel.org
> Signed-off-by: Yemike Abhilash Chandra <y-abhilashchandra@ti.com>
> ---
>   arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts | 13 ++++++++++++-
>   1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> index 11522b36e0ce..5fa70a874d7b 100644
> --- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
> @@ -44,6 +44,17 @@ vusb_main: regulator-vusb-main5v0 {
>   		regulator-boot-on;
>   	};
>   
> +	vsys_5v0: regulator-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;
> +	};
> +
>   	vsys_3v3: regulator-vsys3v3 {
>   		/* Output of LM5141 */
>   		compatible = "regulator-fixed";
> @@ -76,7 +87,7 @@ vdd_sd_dv: regulator-tlv71033 {
>   		regulator-min-microvolt = <1800000>;
>   		regulator-max-microvolt = <3300000>;
>   		regulator-boot-on;
> -		vin-supply = <&vsys_3v3>;
> +		vin-supply = <&vsys_5v0>;

Looking at schematic page -3

USB PD Controller is giving input to LM61460 , LM5141(3V3), and TPS62177.

Could you please recheck this, vin-supply for 3v3 regulator

Thanks

Udit


>   		gpios = <&main_gpio0 49 GPIO_ACTIVE_HIGH>;
>   		states = <1800000 0x0>,
>   			 <3300000 0x1>;