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

[Krzysztof Kozlowski]

On 20/04/2026 17:18, Krzysztof Kozlowski wrote:
> 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...

... and the pull to SoC actually happened before. It's public, so you
could check that.

Best regards,
Krzysztof