linux-kernel - Re: [PATCH 1/1] drm/panel: truly: Add additional delay after pulling down reset gpio

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Date:   Thu, 6 Jun 2019 16:48:31 +0530
From:   Vivek Gautam <vivek.gautam@...eaurora.org>
To:     Sam Ravnborg <sam@...nborg.org>
Cc:     David Airlie <airlied@...ux.ie>,
        "thierry.reding" <thierry.reding@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: Re: [PATCH 1/1] drm/panel: truly: Add additional delay after pulling
 down reset gpio

On Wed, Jun 5, 2019 at 1:54 PM Sam Ravnborg <sam@...nborg.org> wrote:
>
> Hi Vivek,
>
> On Mon, May 27, 2019 at 03:56:16PM +0530, Vivek Gautam wrote:
> > MTP SDM845 panel seems to need additional delay to bring panel
> > to a workable state. Running modetest without this change displays
> > blurry artifacts.
> >
> > Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
>
> added to drm-misc-next

Thanks a lot.

Best regards
Vivek

>
>         Sam
>
> > ---
> >  drivers/gpu/drm/panel/panel-truly-nt35597.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/panel/panel-truly-nt35597.c b/drivers/gpu/drm/panel/panel-truly-nt35597.c
> > index fc2a66c53db4..aa7153fd3be4 100644
> > --- a/drivers/gpu/drm/panel/panel-truly-nt35597.c
> > +++ b/drivers/gpu/drm/panel/panel-truly-nt35597.c
> > @@ -280,6 +280,7 @@ static int truly_35597_power_on(struct truly_nt35597 *ctx)
> >       gpiod_set_value(ctx->reset_gpio, 1);
> >       usleep_range(10000, 20000);
> >       gpiod_set_value(ctx->reset_gpio, 0);
> > +     usleep_range(10000, 20000);
> >
> >       return 0;
> >  }
> > --
> > QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> > of Code Aurora Forum, hosted by The Linux Foundation
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@...ts.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation

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