Re: [PATCH] arm64: dts: ti: k3-j784s4: use ti,j7200-padconf compatible

[Thomas Richard]

On 11/19/24 20:01, Francesco Dolcini wrote:
> Hello Thomas and TI folks,
> 
> On Wed, Nov 13, 2024 at 11:43:05AM +0100, Thomas Richard wrote:
>> Like on j7200, pinctrl contexts shall be saved and restored during
>> suspend-to-ram.
>>
>> So use ti,j7200-padconf compatible.
>>
>> Signed-off-by: Thomas Richard <thomas.richard@xxxxxxxxxxx>
>> ---
>> Use ti,j7200-padconf compatible to save and restore pinctrl contexts during
>> suspend-to-ram.
>> ---
>>  arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi       |  6 +++---
>>  arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi | 12 ++++++------
> 
> Do j784s4 supports any kind of low power mode and/or suspend to ram? My
> understanding was that this was not supported, but maybe there is some
> details that was lost when I was told this information.

Hello Francesco,

We are working on suspend-to-ram support for j7200 and j784s4.
During suspend-to-ram the SoC is fully powered-off (thanks to the PMIC
which powers off all the power rails except the DDR which is in
self-refresh), like on j7200.
Please let me know if you want more details.

Regards,

Thomas