On Thu, Jul 18, 2024 at 5:31 AM Dmitry Baryshkov
<dmitry.barysh...@linaro.org> wrote:
>
> On Wed, Jul 17, 2024 at 06:09:29PM GMT, Rob Clark wrote:
> > On Wed, Jul 17, 2024 at 5:19 PM Doug Anderson <diand...@chromium.org> wrote:
> > >
> > > Hi,
> > >
> > > On Wed, Jul 17, 2024 at 2:58 PM Rob Clark <robdcl...@gmail.com> wrote:
> > > >
> > > > From: Rob Clark <robdcl...@chromium.org>
> > > >
> > > > Just a guess on the panel timings, but they appear to work.
> > > >
> > > > Signed-off-by: Rob Clark <robdcl...@chromium.org>
> > > > ---
> > > > This adds the panel I have on my lenovo yoga slim 7x laptop. I couldn't
> > > > find any datasheet so timings is just a guess. But AFAICT everything
> > > > works fine.
> > > >
> > > > drivers/gpu/drm/panel/panel-edp.c | 2 ++
> > > > 1 file changed, 2 insertions(+)
> > >
> > > Given that this is a Samsung ATNA<mumble>, is there any chance it's an
> > > OLED panel? Should it be supported with the Samsung OLED panel driver
> > > like this:
> > >
> > > https://lore.kernel.org/r/20240715-x1e80100-crd-backlight-v2-0-31b7f2f65...@linaro.org
> >
> > it is an OLED panel, and I did see that patchset and thought that
> > samsung panel driver would work. But changing the compat string on
> > the yoga dts only gave me a black screen (and I didn't see any of the
> > other mentioned problems with bl control or dpms with panel-edp). So
> > :shrug:? It could be I overlooked something else, but it _seems_ like
> > panel-edp is fine for this panel. Plus, it would avoid awkwardness if
> > it turned out there were other non-samsung 2nd sources, but so far
> > with a sample size of two 100% of these laptops have the same panel
> > ;-)
> >
> > But that was the reason for posting this as an RFC. I was hoping
> > someone had some hint about where to find datasheets (my google'ing
> > was not successful), etc.
>
> Panelook has a datasheet for ATNA45DC01. It's behind a 'register new
> business email' paywall.
but it does not appear to have ATNA45DC02
fwiw, edid:
----------------
edid-decode (hex):
00 ff ff ff ff ff ff 00 4c 83 89 41 00 00 00 00
00 21 01 04 b5 1f 14 78 02 0b d1 af 51 3d b6 23
0b 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 1e cc 80 50 b0 30 10 74 08 20
88 00 38 c3 10 00 00 1b 1e cc 80 50 b0 30 50 70
08 20 88 00 38 c3 10 00 00 1b 00 00 00 fe 00 53
44 43 20 20 20 20 20 20 20 20 20 20 00 00 00 fe
00 41 54 4e 41 34 35 44 43 30 32 2d 30 20 01 06
02 03 0f 00 e3 05 80 00 e6 06 05 01 8a 6a 02 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 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 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 9c
----------------
Block 0, Base EDID:
EDID Structure Version & Revision: 1.4
Vendor & Product Identification:
Manufacturer: SDC
Model: 16777
Made in: 2023
Basic Display Parameters & Features:
Digital display
Bits per primary color channel: 10
DisplayPort interface
Maximum image size: 31 cm x 20 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 : 0.6835, 0.3164
Green: 0.2402, 0.7138
Blue : 0.1396, 0.0439
White: 0.3125, 0.3291
Established Timings I & II: none
Standard Timings: none
Detailed Timing Descriptors:
DTD 1: 2944x1840 59.999173 Hz 16:10 172.798 kHz
522.540000 MHz (312 mm x 195 mm)
Hfront 8 Hsync 32 Hback 40 Hpol P
Vfront 8 Vsync 8 Vback 1024 Vpol N
DTD 2: 2944x1840 89.998760 Hz 16:10 172.798 kHz
522.540000 MHz (312 mm x 195 mm)
Hfront 8 Hsync 32 Hback 40 Hpol P
Vfront 8 Vsync 8 Vback 64 Vpol N
Alphanumeric Data String: 'SDC '
Alphanumeric Data String: 'ATNA45DC02-0 '
Extension blocks: 1
Checksum: 0x06
----------------
Block 1, CTA-861 Extension Block:
Revision: 3
Native detailed modes: 0
Colorimetry Data Block:
BT2020RGB
HDR Static Metadata Data Block:
Electro optical transfer functions:
Traditional gamma - SDR luminance range
SMPTE ST2084
Supported static metadata descriptors:
Static metadata type 1
Desired content max luminance: 138 (993.486 cd/m^2)
Desired content max frame-average luminance: 106 (496.743 cd/m^2)
Desired content min luminance: 2 (0.001 cd/m^2)
Checksum: 0x9c Unused space in Extension Block: 112 bytes
----------------
BR,
-R
> >
> > BR,
> > -R
>
> --
> With best wishes
> Dmitry
