Hi Jacopo,

On 15/10/2019 11:46, Jacopo Mondi wrote:
> Expand comment in the 'vsps' parsing routine to specify the LIF
> channel index defaults to 0 in case the second cell of the property
> is not specified to remain compatible with older DT bindings.

Reviewed-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>

> Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
> Signed-off-by: Jacopo Mondi <jacopo+rene...@jmondi.org>
> ---
>  drivers/gpu/drm/rcar-du/rcar_du_kms.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c 
> b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> index 7c9fb5860e54..186422ac552b 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> @@ -587,7 +587,11 @@ static int rcar_du_vsps_init(struct rcar_du_device *rcdu)
>  
>               vsps[j].crtcs_mask |= BIT(i);
>  
> -             /* Store the VSP pointer and pipe index in the CRTC. */
> +             /*
> +              * Store the VSP pointer and pipe index in the CRTC. If the
> +              * second cell of the 'vsps' specifier isn't present, default
> +              * to 0 to remain compatible with older DT bindings.
> +              */
>               rcdu->crtcs[i].vsp = &rcdu->vsps[j];
>               rcdu->crtcs[i].vsp_pipe = cells >= 1 ? args.args[0] : 0;
>       }
> 

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