ACK: [PATCH 0/1][SRU][P] System hang while connecting dock during s2idle on AMD system

[Edoardo Canepa]

On 29/05/25 02:58, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
>
> BugLink: https://bugs.launchpad.net/bugs/2106783
>
> [Impact]
> Some platforms are reported to have a failure that can occur when the
> EC SCI is asserted but the system doesn't wake up (such as no Notify()
> after processing EC events). What happens is the APU rapidly enters
> and exits s0i3 multiple times. On affected systems this triggers the
> over voltage protection (OVP) mechanism of the voltage regulator module
> (VRM). The system will be forced off, and to be reset the battery will
> need to be disconnected and reconnected.
>
> [Fix]
> AMD will submit the patches to the upstream soon.
> https://lore.kernel.org/platform-driver-x86/70dfa642-4c97-4aaf-aa79-70127974f03e@amd.com/T/#m174cfe2f4ec5893e39cff6994a93ebd499ec29e7
>
> Included in v6.15-rc5
> 9f5595d5f03fd platform/x86/amd: pmc: Require at least 2.5 seconds between HW sleep cycles
>
> [Test]
>  From the listed AMD machines, boot up and makes it enter suspended, and
> then plug the dock. The system should work normally without hang.
> DELL PRO 13 PLUS PB13255, DELL PRO 13 PLUS PB13255 360,
> DELL PRO 14 PLUS PB14255, DELL PRO 16 PLUS PB16255,
> DELL PRO 14 PC14255, DELL PRO 16 PC16255
>
> [Where problems could occur]
> Add sleep() in some cases should be safe and not possible to introduce regressions.
>
> Mario Limonciello (1):
>    platform/x86/amd: pmc: Require at least 2.5 seconds between HW sleep
>      cycles
>
>   drivers/platform/x86/amd/pmc/pmc.c | 7 +++----
>   1 file changed, 3 insertions(+), 4 deletions(-)
>
Acked-by: Edoardo Canepa <edoardo.canepa at canonical.com>
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