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Date:   Thu, 22 Jul 2021 19:08:03 +0000
From:   Stephen Boyd <>
To:     Kuogee Hsieh <>,,,
Subject: Re: [PATCH v2 3/7] drm/msm/dp: reset aux controller after
 dp_aux_cmd_fifo_tx() failed.

Quoting Kuogee Hsieh (2021-07-13 08:54:03)
> Aux hardware calibration sequence requires resetting the aux controller
> in order for the new setting to take effect. However resetting the AUX
> controller will also clear HPD interrupt status which may accidentally
> cause pending unplug interrupt to get lost. Therefore reset aux
> controller only when link is in connection state when dp_aux_cmd_fifo_tx()
> fail. This fixes Link Layer CTS cases and
> Signed-off-by: Kuogee Hsieh <>
> ---

Reviewed-by: Stephen Boyd <>

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