linux-kernel - Re: [PATCH] drm/panel-edp: Add Starry 116KHD024006

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Message-ID: <CAD=FV=UfEsC0xT60-SZ12iCp6k16_BmkMgmiCcrAgS08bfsugA@mail.gmail.com>
Date: Mon, 13 Jan 2025 08:33:18 -0800
From: Doug Anderson <dianders@...omium.org>
To: dri-devel@...ts.freedesktop.org
Cc: Stephen Boyd <swboyd@...omium.org>, David Airlie <airlied@...il.com>, 
	Jessica Zhang <quic_jesszhan@...cinc.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Neil Armstrong <neil.armstrong@...aro.org>, Simona Vetter <simona@...ll.ch>, 
	Thomas Zimmermann <tzimmermann@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel-edp: Add Starry 116KHD024006

Hi,

On Thu, Jan 9, 2025 at 2:29 PM Douglas Anderson <dianders@...omium.org> wrote:
>
> We have a few reports of sc7180-trogdor-pompom devices that have a
> panel in them that IDs as STA 0x0004 and has the following raw EDID:
>
>   00 ff ff ff ff ff ff 00  4e 81 04 00 00 00 00 00
>   10 20 01 04 a5 1a 0e 78  0a dc dd 96 5b 5b 91 28
>   1f 52 54 00 00 00 01 01  01 01 01 01 01 01 01 01
>   01 01 01 01 01 01 8e 1c  56 a0 50 00 1e 30 28 20
>   55 00 00 90 10 00 00 18  00 00 00 00 00 00 00 00
>   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
>   00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 fe
>   00 31 31 36 4b 48 44 30  32 34 30 30 36 0a 00 e6
>
> We've been unable to locate a datasheet for this panel and our partner
> has not been responsive, but all Starry eDP datasheets that we can
> find agree on the same timing (delay_100_500_e200) so it should be
> safe to use that here instead of the super conservative timings. We'll
> still go a little extra conservative and allow `hpd_absent` of 200
> instead of 100 because that won't add any real-world delay in most
> cases.
>
> We'll associate the string from the EDID ("116KHD024006") with this
> panel. Given that the ID is the suspicious value of 0x0004 it seems
> likely that Starry doesn't always update their IDs but the string will
> still work to differentiate if we ever need to in the future.
>
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
>
>  drivers/gpu/drm/panel/panel-edp.c | 1 +
>  1 file changed, 1 insertion(+)

Pushed to drm-misc-next:

[1/1] drm/panel-edp: Add Starry 116KHD024006
      commit: 749b5b279e5636cdcef51e15d67b77162cca6caa