[PATCH v2] ASoC: qcom: lpass-cpu: mark HDMI TX registers as volatile

Srinivasa Rao Mandadapu quic_srivasam at quicinc.com
Sat Oct 15 11:23:09 CEST 2022


On 10/15/2022 2:41 AM, Stephen Boyd wrote:
> Quoting Srinivasa Rao Mandadapu (2022-10-12 22:08:31)
>> Update HDMI volatile registers list as DMA, Channel Selection registers,
>> vbit control registers are being reflected by hardware DP port
>> disconnection.
>>
>> This update is required to fix no display and no sound issue observed
>> after reconnecting TAMA/SANWA DP cables.
>> Once DP cable is unplugged, DMA control registers are being reset by
>> hardware, however at second plugin, new dma control values does not
>> updated to the dma hardware registers since new register value and
>> cached values at the time of first plugin are same.
>>
>> Fixes: 7cb37b7bd0d3 ("ASoC: qcom: Add support for lpass hdmi driver")
>>
>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam at quicinc.com>
>> Reported-by: Kuogee Hsieh <quic_khsieh at quicinc.com>
>> ---
> I found that another patch in this area hasn't been applied[1]. Is it
> still relevant? We're still carrying it in the chromium tree. If it is
> relevant can you please resend it.
>
> [1] https://lore.kernel.org/all/1602596728-11783-1-git-send-email-srivasam@codeaurora.org/

Thanks for Notifying this untracked patch.

Resent the patch.
     - 
https://patchwork.kernel.org/project/alsa-devel/patch/1665825530-7593-1-git-send-email-quic_srivasam@quicinc.com/



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