[PATCH v2] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to PMIC-B

[Kumar, Udit]

On 4/29/2026 5:49 PM, Thomas Richard (TI) wrote:
> On j721s2, PMIC-B is needed to exit the DDR from retention after
> suspend-to-ram. Add bootph-pre-ram property to make PMIC-B available to
> the bootloader in the phase that sets up the DDR.
> 
> Signed-off-by: Thomas Richard (TI) <thomas.richard at bootlin.com>
> ---
> For the v2 I just updated the commit title and message to use PMIC-B
> instead of pmic at 4c.
> ---
> Changes in v2:
> - replace pmic at 4c by PMIC-B in commit message.
> - Link to v1: https://lore.kernel.org/r/20260428-k3-j721s2-som-bootph-pre-ram-pmic-4c-v1-1-e8202ce955a0@bootlin.com
> ---
>  arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
> index 12a38dd1514b..a19e535f4946 100644
> --- a/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j721s2-som-p0.dtsi
> @@ -250,6 +250,7 @@ buckb1: buck1 {
>  				regulator-max-microvolt = <1800000>;
>  				regulator-always-on;
>  				regulator-boot-on;
> +				bootph-pre-ram;

Reviewed-by: Udit Kumar <u-kumar1 at ti.com>

>  			};
>  
>  			buckb2: buck2 {
> 
> ---
> base-commit: 59b04cb2325c07ddc1cc7d984bd8c8f89f161746
> change-id: 20260427-k3-j721s2-som-bootph-pre-ram-pmic-4c-744fb90b05a3
> 
> Best regards,