Re: [PATCH v7 04/35] drm/msm/dp: introduce stream_id for each DP panel

[Dmitry Baryshkov]

On Tue, Sep 29, 2026 at 12:25:28PM +0800, Yongxing Mou wrote:
> From: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
> 
> With MST, each DP controller can handle multiple streams. There shall be
> one dp_panel for each stream but the dp_display object shall be shared
> among them. To represent this abstraction, add a stream_id field to
> struct msm_dp_panel and introduce the msm_dp_stream_id enum. For SST,
> the field is initialized to DP_STREAM_0.
> 
> In the MST path, each panel will be assigned an actual stream_id at
> stream-enable time by the MST layer (added in later patches).
> 
> Use the stream ID to control the pixel clock of that respective stream by
> extending the clock handles and state tracking of the DP pixel clock to
> an array of max supported streams. The maximum streams currently is 4.
> 
> Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
> Signed-off-by: Yongxing Mou <yongxing.mou@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/msm/dp/dp_ctrl.c    | 70 +++++++++++++++++++++++--------------
>  drivers/gpu/drm/msm/dp/dp_ctrl.h    |  2 +-
>  drivers/gpu/drm/msm/dp/dp_display.c |  2 +-
>  drivers/gpu/drm/msm/dp/dp_panel.c   |  1 +
>  drivers/gpu/drm/msm/dp/dp_panel.h   | 11 ++++++
>  5 files changed, 57 insertions(+), 29 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>


-- 
With best wishes
Dmitry