linux-kernel - Re: [PATCH v1 1/2] drm/panel: simple-panel: add the delay timing for Sharp LQ123P1JX31

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Date:	Thu, 21 Jul 2016 10:30:13 -0400
From:	Sean Paul <seanpaul@...omium.org>
To:	Yakir Yang <ykk@...k-chips.com>
Cc:	Mark Yao <yzq@...k-chips.com>, Inki Dae <inki.dae@...sung.com>,
	Thierry Reding <treding@...dia.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Jingoo Han <jingoohan1@...il.com>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Stéphane Marchesin <marcheu@...omium.org>,
	Tomasz Figa <tfiga@...omium.org>,
	Douglas Anderson <dianders@...omium.org>,
	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Emil Velikov <emil.l.velikov@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH v1 1/2] drm/panel: simple-panel: add the delay timing for
 Sharp LQ123P1JX31

On Thu, Jul 21, 2016 at 9:14 AM, Yakir Yang <ykk@...k-chips.com> wrote:
> According to page 16 of Sharp LQ123P1JX31 datasheet, we need to add the
> missing delay timing. Panel prepare time should be t1 (0.5ms~10ms) plus
> t3 (0ms~100ms), and panel enable time should equal to t7 (0ms~50ms), and
> panel unprepare time should be t11 (1ms~50ms) plus t12 (500ms~).
>
> Signed-off-by: Yakir Yang <ykk@...k-chips.com>

Reviewed-by: Sean Paul <seanpaul@...omium.org>

> ---
>  drivers/gpu/drm/panel/panel-simple.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 85143d1..f178998 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1384,6 +1384,11 @@ static const struct panel_desc sharp_lq123p1jx31 = {
>                 .width = 259,
>                 .height = 173,
>         },
> +       .delay = {
> +               .prepare = 110,
> +               .enable = 50,
> +               .unprepare = 550,
> +       },
>  };
>
>  static const struct drm_display_mode shelly_sca07010_bfn_lnn_mode = {
> --
> 1.9.1
>
>