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    SubjectRe: [PATCH V4 1/8] drivers/acpi: Add support for Wifi band RF mitigations
    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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