linux-kernel - Re: [PATCH] drm/panel: Fix boe,tv101wum-n53 htotal timing

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Message-ID: <20200125061236.GA25729@ravnborg.org>
Date:   Sat, 25 Jan 2020 07:12:36 +0100
From:   Sam Ravnborg <sam@...nborg.org>
To:     Nicolas Boichat <drinkcat@...omium.org>
Cc:     Jitao Shi <jitao.shi@...iatek.com>,
        Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel: Fix boe,tv101wum-n53 htotal timing

Hi Nicolas.

On Sat, Jan 25, 2020 at 01:02:56PM +0800, Nicolas Boichat wrote:
> The datasheet suggests 60 for tHFP, so let's adjust the number
> accordingly.
> 
> This also makes the framerate be 60Hz as intended:
> 159916.0 * 1000 / ((1200 + 80 + 24 + 60)*(1920 + 20 + 4 + 10))
> => 60.00 Hz
> 
> Signed-off-by: Nicolas Boichat <drinkcat@...omium.org>

Thanks. Added Fixes: tag and applied to drm-misc-next.

	Sam


> 
> ---
> 
> This also matches the values that we use in our chromeos-4.19
> vendor kernel.
> 
> Applies on top or drm-misc/drm-misc-next.
> 
>  drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
> index 01faf8597700005..48a164257d18c35 100644
> --- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
> +++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
> @@ -645,7 +645,7 @@ static const struct drm_display_mode boe_tv101wum_n53_default_mode = {
>  	.hdisplay = 1200,
>  	.hsync_start = 1200 + 80,
>  	.hsync_end = 1200 + 80 + 24,
> -	.htotal = 1200 + 80 + 24 + 40,
> +	.htotal = 1200 + 80 + 24 + 60,
>  	.vdisplay = 1920,
>  	.vsync_start = 1920 + 20,
>  	.vsync_end = 1920 + 20 + 4,
> -- 
> 2.25.0.341.g760bfbb309-goog