linux-kernel - Re: [PATCH] drm/i915/audio: Use BIOS provided value for RKL HDA link

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Date:   Mon, 6 Sep 2021 10:32:32 +0300 (EEST)
From:   Kai Vehmanen <kai.vehmanen@...ux.intel.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
cc:     jani.nikula@...ux.intel.com, joonas.lahtinen@...ux.intel.com,
        rodrigo.vivi@...el.com, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Ville Syrjälä <ville.syrjala@...ux.intel.com>,
        Lucas De Marchi <lucas.demarchi@...el.com>,
        Imre Deak <imre.deak@...el.com>,
        Uma Shankar <uma.shankar@...el.com>,
        Matt Roper <matthew.d.roper@...el.com>,
        Kai Vehmanen <kai.vehmanen@...ux.intel.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915/audio: Use BIOS provided value for RKL HDA
 link

Hi,

On Mon, 6 Sep 2021, Kai-Heng Feng wrote:

> Commit 989634fb49ad ("drm/i915/audio: set HDA link parameters in
> driver") makes HDMI audio on Lenovo P350 disappear.
> 
> So in addition to TGL, extend the logic to RKL to use BIOS provided
> value to fix the regression.

thanks Kai-Heng! We were not aware of commercial RKL systems following the
old BIOS guidance, but given you just hit one, then this definitely is
needed:

Reviewed-by: Kai Vehmanen <kai.vehmanen@...ux.intel.com>          

Br, Kai