[PATCH] arm64: dts: exynos850: Add syscon-poweroff node

[Krzysztof Kozlowski]

On 20/04/2026 17:04, Alexey Klimov wrote:
> On Wed Mar 25, 2026 at 12:26 AM GMT, Alexey Klimov wrote:
>> Without poweroff node Exynos850-based board continue to draw current
>> (around ~60 mA with my test setup) after poweroff. Kernel also reports
>> different lockup problems and RCU stalls warnings continuosly after
>> last kernel messages about hardware being switched off.
>> Turns out we missed a write to PMU's PS_HOLD_CONTROL (PMU + 0x30c)
>> register that actually switches the SoC off.
>>
>> Add poweroff node that implements this.
>>
>> With this change the current draw after power off is in range of few
>> milliampers and lockup messages are no more.
>>
>> Signed-off-by: Alexey Klimov <alexey.klimov at linaro.org>
>> ---
>>  arch/arm64/boot/dts/exynos/exynos850.dtsi | 7 +++++++
> 
> Any feedback on this?

You posted it right before closing tree, so this was waiting for a few
days for anyone to chime in and then tree is closed. It's merge window
now, so I don't review anything. Nothing new here...

Best regards,
Krzysztof