arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c

[PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c

Posted by Thomas Richard (TI) 1 month, 2 weeks ago

On j721s2, pmic@4c is needed to exit the DDR from retention after
suspend-to-ram. Add bootph-pre-ram property to make pmic@4c available to
the bootloader in the phase that sets up the DDR.

Signed-off-by: Thomas Richard (TI) <thomas.richard@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;
 			};
 
 			buckb2: buck2 {

---
base-commit: 59b04cb2325c07ddc1cc7d984bd8c8f89f161746
change-id: 20260427-k3-j721s2-som-bootph-pre-ram-pmic-4c-744fb90b05a3

Best regards,
-- 
Thomas Richard (TI) <thomas.richard@bootlin.com>

Re: [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c

Posted by Kumar, Udit 1 month, 2 weeks ago


On 4/28/2026 2:23 PM, Thomas Richard (TI) wrote:
> On j721s2, pmic@4c is needed to exit the DDR from retention after

pmic@4c to PMIC-A to align with schematic, please

> suspend-to-ram. Add bootph-pre-ram property to make pmic@4c available to
> the bootloader in the phase that sets up the DDR.
> 
> Signed-off-by: Thomas Richard (TI) <thomas.richard@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;
>  			};
>  
>  			buckb2: buck2 {
> 
> ---
> base-commit: 59b04cb2325c07ddc1cc7d984bd8c8f89f161746
> change-id: 20260427-k3-j721s2-som-bootph-pre-ram-pmic-4c-744fb90b05a3
> 
> Best regards,

Re: [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c

Posted by Thomas Richard 1 month, 2 weeks ago

On 4/28/26 12:15 PM, Kumar, Udit wrote:
> 
> 
> On 4/28/2026 2:23 PM, Thomas Richard (TI) wrote:
>> On j721s2, pmic@4c is needed to exit the DDR from retention after
> 
> pmic@4c to PMIC-A to align with schematic, please

You mean PMIC-B.

Best Regards,
Thomas

Re: [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c

Posted by Kumar, Udit 1 month, 2 weeks ago


On 4/28/2026 5:36 PM, Thomas Richard wrote:
> On 4/28/26 12:15 PM, Kumar, Udit wrote:
>>
>>
>> On 4/28/2026 2:23 PM, Thomas Richard (TI) wrote:
>>> On j721s2, pmic@4c is needed to exit the DDR from retention after
>>
>> pmic@4c to PMIC-A to align with schematic, please
> 
> You mean PMIC-B.
> 

Yes,

> Best Regards,
> Thomas