于 2020年3月20日 GMT+08:00 下午5:11:22, Linus Walleij <linus.wall...@linaro.org> 写到:
>On Fri, Mar 20, 2020 at 9:07 AM Icenowy Zheng <icen...@aosc.io> wrote:
>> 于 2020年3月19日 GMT+08:00 下午10:14:27, Linus Walleij
><linus.wall...@linaro.org> 写到:
>> >On Mon, Mar 16, 2020 at 2:37 PM Icenowy Zheng <icen...@aosc.io>
>wrote:
>
>> >As noticed in the review of the driver, this display is very close
>to
>> >himax,hx8363.
>> >
>> >I think the best is to determin what actual display controller it
>is,
>> >I think it is some kind of Ilitek controller since Ilitek ili9342 is
>> >clearly very similar.
>>
>> It's Sitronix ST7703, same as the Librem 5 panel.
>
>Heh, I wonder how it comes that it is so similar to Ilitek.
>I guess I will never understand how the silicon ecosystem works
>in asia (I did read a lot of Bunnie Huang's articles and hardware
>hacking book to try to understand...)
>
>This file should be named sitronix,st7703.yaml then.
>
>According to the code in the Librem 5:
>https://source.puri.sm/Librem5/linux-next/blob/imx8-current-librem5/drivers/gpu/drm/panel/panel-sitronix-st7701.c
>The actual name of the display is Techstar ts8550b.
Sorry, for Librem 5 panel, I mean Rocktech JH057N00900 here.
This is also the code that my patchset based on.
>And the display controller is st7701, so maybe we should
>actually name it sitronix,st770x.yaml if there are some
>sub-variants of st770x?
>
>> >properties:
>> > compatible:
>> > items:
>> > - const: xingbangda,xbd599
>> > - const: ilitek,ili9342
>> >
>> >Possibly use oneOf and add support for the himax,hx8363
>> >already while you're at it.
>
>This should at least be:
>
>compatible:
> items:
> - enum:
> - xingbangda,xbd599
> - himax,hx8363
> - techstar,ts8550b
> - enum:
> - sitronix,st7701
> - sitronix,st7703
>
>So panel nodes using this panel become
>compatible = "xingbangda,sbd599", "sitronix,st7703"
>etc.
>
>This way it is straight-forward for drivers to identify the panel
>vendor and display controller.
>
>Yours,
>Linus Walleij
>
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