[PATCH v2 38/38] drm/msm/dp: Add MST stream support for SA8775P DP controller 0 and 1

[Dmitry Baryshkov]

On Mon, Jun 09, 2025 at 08:21:57PM +0800, Yongxing Mou wrote:
> This change enables support for Multi-Stream Transport (MST), allowing
> each controller to handle up to two DisplayPort streams. As all
> necessary code for MST support was already implemented in the previous
> series of patches.
> 
> Signed-off-by: Yongxing Mou <quic_yongmou at quicinc.com>
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
> index 75f2fd7c75eae81e5c843f8ae2d1ce12ad0cad7e..16196dcc9ff4ac6a35b6bcd8d433b08f7d18fe5b 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -127,8 +127,10 @@ struct msm_dp_desc {
>  };
>  
>  static const struct msm_dp_desc msm_dp_desc_sa8775p[] = {
> -	{ .io_start = 0x0af54000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true },
> -	{ .io_start = 0x0af5c000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true },
> +	{ .io_start = 0x0af54000, .id = MSM_DP_CONTROLLER_0, .wide_bus_supported = true,
> +	  .mst_streams = 2},

I thought few patches ago you wrote that this controller should support
4 MST streams.

> +	{ .io_start = 0x0af5c000, .id = MSM_DP_CONTROLLER_1, .wide_bus_supported = true,
> +	  .mst_streams = 2},
>  	{ .io_start = 0x22154000, .id = MSM_DP_CONTROLLER_2, .wide_bus_supported = true },
>  	{ .io_start = 0x2215c000, .id = MSM_DP_CONTROLLER_3, .wide_bus_supported = true },
>  	{}
> 
> -- 
> 2.34.1
> 

-- 
With best wishes
Dmitry