Re: [PATCH 2/2] drm/panel-edp: Add AUO B133UAN01

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Hi Doug,

On Thu, Mar 24, 2022 at 11:27:46AM -0700, Doug Anderson wrote:
> Hi,
> 
> On Thu, Mar 24, 2022 at 11:14 AM Matthias Kaehlcke <mka@xxxxxxxxxxxx> wrote:
> >
> > Add support for the AUO B133UAN01 13.3" WUXGA panel.
> >
> > Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
> > ---
> > output of edid-decode:
> >
> >   Block 0, Base EDID:
> >     EDID Structure Version & Revision: 1.4
> >     Vendor & Product Identification:
> >       Manufacturer: AUO
> >       Model: 34196
> >       Made in: 2020
> >     Basic Display Parameters & Features:
> >       Digital display
> >       Bits per primary color channel: 8
> >       DisplayPort interface
> >       Maximum image size: 29 cm x 18 cm
> >       Gamma: 2.20
> >       Supported color formats: RGB 4:4:4
> >       First detailed timing includes the native pixel format and preferred refresh rate
> >     Color Characteristics:
> >       Red  : 0.6513, 0.3271
> >       Green: 0.2900, 0.6279
> >       Blue : 0.1503, 0.0517
> >       White: 0.3134, 0.3291
> >     Established Timings I & II: none
> >     Standard Timings: none
> >     Detailed Timing Descriptors:
> >       DTD 1:  1920x1200   60.026 Hz   8:5    74.192 kHz 156.100 MHz (286 mm x 178 mm)
> >                    Hfront   16 Hsync  16 Hback 152 Hpol N
> >                    Vfront    3 Vsync  14 Vback  19 Vpol N
> >       Manufacturer-Specified Display Descriptor (0x0f): 00 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 20 '............... '
> >       Alphanumeric Data String: 'AUO'
> >       Alphanumeric Data String: 'B133UAN01.0 '
> >
> >  drivers/gpu/drm/panel/panel-edp.c | 32 +++++++++++++++++++++++++++++++
> >  1 file changed, 32 insertions(+)
> 
> I can review this patch and it can be landed if you really need it,
> but I'd prefer not to. Instead I'd rather see the panel added to
> _just_ the "edp_panels" structure. That maps the panel ID to the
> delays. If we do it that way:
> 
> 1. We don't need the binding.
> 
> 2. We don't need to hardcode the mode in this file.
> 
> 3. We support second sourcing the panel.
> 
> 4. We simplify our device tree files.
> 
> 
> Let me know if we can just go that way. If we really have a reason to
> support the old hardcoded mode we can land something like this but I'd
> rather avoid it if possible.
> 
> Also: note that even if we land this, adding the entry to the
> "edp_panels" structure would help future-proof us a bit.

Thanks for your suggestion, it seems it should be possible to support the
panel as you described, which I agree is preferable. I'll send a new
version without the binding and the hardcoded mode.



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