* [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c
@ 2026-04-28 8:53 Thomas Richard (TI)
2026-04-28 10:15 ` Kumar, Udit
0 siblings, 1 reply; 4+ messages in thread
From: Thomas Richard (TI) @ 2026-04-28 8:53 UTC (permalink / raw)
To: Nishanth Menon, Vignesh Raghavendra, Tero Kristo, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: Thomas Petazzoni, linux-arm-kernel, devicetree, linux-kernel,
gregory.clement, richard.genoud, u-kumar1, a-kumar2,
Thomas Richard (TI)
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>
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c
2026-04-28 8:53 [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c Thomas Richard (TI)
@ 2026-04-28 10:15 ` Kumar, Udit
2026-04-28 12:06 ` Thomas Richard
0 siblings, 1 reply; 4+ messages in thread
From: Kumar, Udit @ 2026-04-28 10:15 UTC (permalink / raw)
To: Thomas Richard (TI), Nishanth Menon, Vignesh Raghavendra,
Tero Kristo, Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: Thomas Petazzoni, linux-arm-kernel, devicetree, linux-kernel,
gregory.clement, richard.genoud, a-kumar2, u-kumar1
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,
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c
2026-04-28 10:15 ` Kumar, Udit
@ 2026-04-28 12:06 ` Thomas Richard
2026-04-28 12:57 ` Kumar, Udit
0 siblings, 1 reply; 4+ messages in thread
From: Thomas Richard @ 2026-04-28 12:06 UTC (permalink / raw)
To: Kumar, Udit, Nishanth Menon, Vignesh Raghavendra, Tero Kristo,
Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: Thomas Petazzoni, linux-arm-kernel, devicetree, linux-kernel,
gregory.clement, richard.genoud, a-kumar2
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c
2026-04-28 12:06 ` Thomas Richard
@ 2026-04-28 12:57 ` Kumar, Udit
0 siblings, 0 replies; 4+ messages in thread
From: Kumar, Udit @ 2026-04-28 12:57 UTC (permalink / raw)
To: Thomas Richard, Nishanth Menon, Vignesh Raghavendra, Tero Kristo,
Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: Thomas Petazzoni, linux-arm-kernel, devicetree, linux-kernel,
gregory.clement, richard.genoud, a-kumar2
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
^ permalink raw reply [flat|nested] 4+ messages in thread
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2026-04-28 8:53 [PATCH] arm64: dts: ti: k3-j721s2-som-p0: add bootph-pre-ram property to pmic@4c Thomas Richard (TI)
2026-04-28 10:15 ` Kumar, Udit
2026-04-28 12:06 ` Thomas Richard
2026-04-28 12:57 ` Kumar, Udit
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