[PATCH v3 2/5] drm: xlnx: zynqmp_dpsub: Fix timing for live mode

Laurent Pinchart laurent.pinchart at ideasonboard.com
Mon Feb 5 08:08:24 UTC 2024


Hi Anatoliy,

Thank you for the patch.

On Tue, Jan 23, 2024 at 06:53:59PM -0800, Anatoliy Klymenko wrote:
> Expect external video timing in live video input mode, program
> DPSUB acordingly.

Are there no designs where the DPSUB operates in non-live mode, but uses
a video clock from the PL, for instance to use a different clock
frequency ?

I don't think that use case is very common, so I'm fine with this patch
in order to properly support the more common use case of live input, and
leave the PL clock without live input use case for later.

> 
> Reviewed-by: Tomi Valkeinen <tomi.valkeinen at ideasonboard.com>
> 

No need for a blank line here.

> Signed-off-by: Anatoliy Klymenko <anatoliy.klymenko at amd.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

> ---
>  drivers/gpu/drm/xlnx/zynqmp_disp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> index 407bc07cec69..8a39b3accce5 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
> @@ -1166,7 +1166,7 @@ void zynqmp_disp_enable(struct zynqmp_disp *disp)
>  	/* Choose clock source based on the DT clock handle. */
>  	zynqmp_disp_avbuf_set_clocks_sources(disp, disp->dpsub->vid_clk_from_ps,
>  					     disp->dpsub->aud_clk_from_ps,
> -					     true);
> +					     disp->dpsub->vid_clk_from_ps);
>  	zynqmp_disp_avbuf_enable_channels(disp);
>  	zynqmp_disp_avbuf_enable_audio(disp);
>  

-- 
Regards,

Laurent Pinchart


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