linux-kernel - Re: [PATCH v4 0/3] Add ilitek ili9341 panel driver

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Message-ID: <CAHp75Vc5fJM-UiBiosAiTraq=6P0AFefmw1rmtFcvyWVb6rfLA@mail.gmail.com>
Date:   Thu, 5 Aug 2021 13:16:14 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     dillon.minfei@...il.com
Cc:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Noralf Trønnes <noralf@...nnes.org>,
        kbuild-all@...ts.01.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 0/3] Add ilitek ili9341 panel driver

On Sat, Jul 24, 2021 at 6:46 AM <dillon.minfei@...il.com> wrote:
>
> From: Dillon Min <dillon.minfei@...il.com>
>
> Since the st,sf-tc240t-9370-t dts binding already exist in stm32f429-disco.dts
> but, the panel driver didn't get accepted from mainline. it's time to submit
> patch fot it.
>
> This driver can support two different interface by different dts bindings:
> - spi+dpi, use spi to configure register, dpi for graphic data.
>   st,sf-tc240t-9370-t
> - only spi, just like tiny/ili9341.c (actually, this part is copy from tiny)
>   adafruit,yx240qv29

...

> I was submited the first patch last year, you can find it at [1].

submitted

> this patch has one major difference from that one, which is replace the low
> level communication way, from spi_sync() to mipi_dbi_{command,
> command_stackbuf}() interface, referred from Linus's patch [2].

Can you shed a light on the road map here.
I have the SPI panel (tiny) based on the ILI9341 and I'm using
actually mi0283qt driver. With yours we will have 3 (three!) drivers
for the same chip. I really do not want this. Without road map on the
prospective of these all drivers, NAK.

-- 
With Best Regards,
Andy Shevchenko