Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Fri, 23 Jun 2023 16:52:55 +0200 | Subject | Re: [PATCH V4 1/8] drivers/acpi: Add support for Wifi band RF mitigations |
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On Wed, Jun 21, 2023 at 7:47 AM Evan Quan <evan.quan@amd.com> wrote: > > From: Mario Limonciello <mario.limonciello@amd.com> > > Due to electrical and mechanical constraints in certain platform designs > there may be likely interference of relatively high-powered harmonics of > the (G-)DDR memory clocks with local radio module frequency bands used > by Wifi 6/6e/7. > > To mitigate this, AMD has introduced an ACPI based mechanism that > devices can use to notify active use of particular frequencies so > that devices can make relative internal adjustments as necessary > to avoid this resonance. > > In order for a device to support this, the expected flow for device > driver or subsystems: > > Drivers/subsystems contributing frequencies: > > 1) During probe, check `wbrf_supported_producer` to see if WBRF supported
The prefix should be acpi_wbrf_ or acpi_amd_wbrf_ even, so it is clear that this uses ACPI and is AMD-specific.
Whether or not there needs to be an intermediate library wrapped around this is a different matter.
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