linux-kernel - Re: [PATCH] drm/panel-edp: Add panel CSOT MNB601LS1-1

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Date: Wed, 24 Apr 2024 09:55:24 +0800
From: Xuxin Xiong <xuxinxiong@...qin.corp-partner.google.com>
To: Doug Anderson <dianders@...omium.org>
Cc: sam@...nborg.org, neil.armstrong@...aro.org, daniel@...ll.ch, 
	hsinyi@...gle.com, dri-devel@...ts.freedesktop.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel-edp: Add panel CSOT MNB601LS1-1

Hi Doug, thank you!
We had reported this info to the CSOT to correct the vendor id.
If they confirm to fix this with the same product ID, we will submit a
patch to fix this.


Doug Anderson <dianders@...omium.org> 于2024年4月24日周三 01:01写道：
>
> Hi,
>
> On Mon, Apr 22, 2024 at 6:28 PM Xuxin Xiong
> <xuxinxiong@...qin.corp-partner.google.com> wrote:
> >
> > Yes, I read the edid from the panels, one is CSO and the other is CSW.
> > The details are as follows, please help check. Thank you!
> >
> >
> > 1. MNC207QS1-1
> > edid-decode (hex):
> > 00 ff ff ff ff ff ff 00 0e 6f 00 12 e7 00 00 00
> > 1e 21 01 04 a5 1b 12 78 03 8a d5 9c 5e 59 90 25
> > 1b 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
> > 01 01 01 01 01 01 ae 3f 80 18 71 b0 23 40 30 20
> > 36 00 07 a4 10 00 00 1a 00 00 00 fd 00 28 3c 4b
> > 4b 11 01 0a 20 20 20 20 20 20 00 00 00 fe 00 43
> > 53 4f 54 20 54 39 0a 20 20 20 20 20 00 00 00 fe
> > 00 4d 4e 43 32 30 37 51 53 31 2d 31 0a 20 00 32
> > ----------------
> > Block 0, Base EDID:
> > EDID Structure Version & Revision: 1.4
> > Vendor & Product Identification:
> > Manufacturer: CSO
> > Model: 4608
> > Serial Number: 231
> > Made in: week 30 of 2023
> > Basic Display Parameters & Features:
> > Digital display
> > Bits per primary color channel: 8
> > DisplayPort interface
> > Maximum image size: 27 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
> > Display is continuous frequency
> > Color Characteristics:
> > Red : 0.6113, 0.3671
> > Green: 0.3496, 0.5644
> > Blue : 0.1474, 0.1064
> > White: 0.3134, 0.3291
> > Established Timings I & II: none
> > Standard Timings: none
> > Detailed Timing Descriptors:
> > DTD 1: 1920x1200 60.000 Hz 8:5 74.100 kHz 163.020 MHz (263 mm x 164 mm)
> > Hfront 48 Hsync 32 Hback 200 Hpol P
> > Vfront 3 Vsync 6 Vback 26 Vpol N
> > Display Range Limits:
> > Monitor ranges (Bare Limits): 40-60 Hz V, 75-75 kHz H, max dotclock 170 MHz
> > Alphanumeric Data String: 'CSOT T9'
> > Alphanumeric Data String: 'MNC207QS1-1'
> > Checksum: 0x32
> >
> > 2. MNB601LS1-1
> > edid-decode (hex):
> >
> > 00 ff ff ff ff ff ff 00 0e 77 00 11 00 00 00 00
> > 00 22 01 04 95 1a 0e 78 03 a1 35 9b 5e 58 91 25
> > 1c 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
> > 01 01 01 01 01 01 09 1e 56 dc 50 00 28 30 30 20
> > 36 00 00 90 10 00 00 1a 00 00 00 fd 00 28 3c 30
> > 30 08 01 0a 20 20 20 20 20 20 00 00 00 fe 00 43
> > 53 4f 54 20 54 39 0a 20 20 20 20 20 00 00 00 fe
> > 00 4d 4e 42 36 30 31 4c 53 31 2d 31 0a 20 00 37
> > ----------------
> > Block 0, Base EDID:
> > EDID Structure Version & Revision: 1.4
> > Vendor & Product Identification:
> > Manufacturer: CSW
> > Model: 4352
> > Made in: 2024
> > Basic Display Parameters & Features:
> > Digital display
> > Bits per primary color channel: 6
> > DisplayPort interface
> > Maximum image size: 26 cm x 14 cm
> > Gamma: 2.20
> > Supported color formats: RGB 4:4:4
> > First detailed timing includes the native pixel format and preferred refresh rate
> > Display is continuous frequency
> > Color Characteristics:
> > Red : 0.6074, 0.3691
> > Green: 0.3437, 0.5673
> > Blue : 0.1445, 0.1123
> > White: 0.3134, 0.3291
> > Established Timings I & II: none
> > Standard Timings: none
> > Detailed Timing Descriptors:
> > DTD 1: 1366x768 60.001 Hz 683:384 48.480 kHz 76.890 MHz (256 mm x 144 mm)
> > Hfront 48 Hsync 32 Hback 140 Hpol P
> > Vfront 3 Vsync 6 Vback 31 Vpol N
> > Display Range Limits:
> > Monitor ranges (Bare Limits): 40-60 Hz V, 48-48 kHz H, max dotclock 80 MHz
> > Alphanumeric Data String: 'CSOT T9'
> > Alphanumeric Data String: 'MNB601LS1-1'
> > Checksum: 0x37
>
> OK. This made me look a little deeper. I believe that the three-letter
> code is managed by UEFI and I found:
>
> https://uefi.org/PNP_ID_List
>
> ...as far as I can tell "CSW" is actually correct for CSOT but "CSO"
> was _not_. Looks as if CSO was supposed to be for "California
> Institute of Technology" (Caltech). :(
>
> We're probably OK with the recent work that Hsin-Yi did in commit
> bf201127c1b8 ("drm/panel-edp: Match edp_panels with panel identity")
> to match against the panel name even if Caltech does ship a "CSO"
> 0x1200 in the future since it looks like the string you added matches
> the panel.
>
> That being said, is there any chance that it's not too late and you
> can get CSOT to fix the EDID on "MNC207QS1-1"? Can you also make sure
> that they're aware of this and don't make the same mistake in the
> future?
>
>
> In any case, given this investigation and the EDID I'm going to say
> that the panel you've added here is fine.
>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
>
> I've pushed your change to drm-misc-next:
>
> a6325ad47bc8 drm/panel-edp: Add panel CSOT MNB601LS1-1
>
> -Doug