On Mon, 14 Apr 2025 11:24:00 -0500, Mario Limonciello wrote:
When an APU exits HW sleep with no active wake sources the Linux kernel will rapidly assert that the APU can enter back into HW sleep. This happens in a few ms. Contrasting this to Windows, Windows can take 10s of seconds to enter back into the resiliency phase for Modern Standby.
For some situations this can be problematic because it can cause leakage from VDDCR_SOC to VDD_MISC and force VDD_MISC outside of the electrical design guide specifications. On some designs this will trip the over voltage protection feature (OVP) of the voltage regulator module, but it could cause APU damage as well.
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Thank you for your contribution, it has been applied to my local review-ilpo-fixes branch. Note it will show up in the public platform-drivers-x86/review-ilpo-fixes branch only once I've pushed my local branch there, which might take a while.
The list of commits applied: [1/1] platform/x86/amd: pmc: Require at least 2.5 seconds between HW sleep cycles commit: 9f5595d5f03fd4dc640607a71e89a1daa68fd19d
-- i.