linux-kernel - Re: [PATCH 0/2] drm/tiny: add support tft display based on ilitek,ili9488

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Date:   Tue, 18 Oct 2022 23:28:23 +0200
From:   Michael Nazzareno Trimarchi <michael@...rulasolutions.com>
To:     Noralf Trønnes <noralf@...nnes.org>
Cc:     Tommaso Merciai <tommaso.merciai@...rulasolutions.com>,
        linuxfancy@...glegroups.com, linux-amarula@...rulasolutions.com,
        kamlesh.gurudasani@...il.com, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Maxime Ripard <maxime@...no.tech>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Sam Ravnborg <sam@...nborg.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 0/2] drm/tiny: add support tft display based on ilitek,ili9488

Hi

On Tue, Oct 18, 2022 at 9:06 PM Noralf Trønnes <noralf@...nnes.org> wrote:
>
>
>
> Den 18.10.2022 18.45, skrev Tommaso Merciai:
> > Hi All,
> > This series  support for ilitek,ili9488 based displays like
> > Waveshare-ResTouch-LCD-3.5 display. Tested on Waveshare-ResTouch-LCD-3.5
> > connected to px30-evb via SPI.
>
> There's a generic MIPI DBI SPI driver now that should work with all
> these panels: drivers/gpu/drm/tiny/panel-mipi-dbi.c
>
> More info: https://github.com/notro/panel-mipi-dbi/wiki
>

We have seen it but it does not apply to the color output and there is
no helper. I was a bit surprised
to have a generic panel for spi and not for standard mipi one.

Michael

> Noralf.
>
> > This series is based on work done by Kamlesh Gurudasani in 2020:
> >
> >  - "drm/tiny: add support for tft displays based on ilitek, ili9488"
> >
> > (Thanks Kamlesh for your starting point)
> >
> > Tests are done using the following tools coming from Yocto fs:
> >
> >  - modetest -M "ili9488" -s 31:320x480@...6 -v
> >  - fb-test
> >  - fb-rect
> >
> > References:
> >  - https://patchwork.kernel.org/project/dri-devel/patch/00719f68aca488a6476b0dda634617606b592823.1592055494.git.kamlesh.gurudasani@gmail.com/
> >  - https://www.hpinfotech.ro/ILI9488.pdf
> >  - https://www.waveshare.com/wiki/Pico-ResTouch-LCD-3.5
> >
> > Regards,
> > Tommaso
> >
> > Tommaso Merciai (2):
> >   dt-bindings: add binding for tft displays based on ilitek,ili9488
> >   drm/tiny: add support for tft displays based on ilitek,ili9488
> >
> >  .../bindings/display/ilitek,ili9488.yaml      |  72 +++
> >  drivers/gpu/drm/tiny/Kconfig                  |  13 +
> >  drivers/gpu/drm/tiny/Makefile                 |   1 +
> >  drivers/gpu/drm/tiny/ili9488.c                | 440 ++++++++++++++++++
> >  4 files changed, 526 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/display/ilitek,ili9488.yaml
> >  create mode 100644 drivers/gpu/drm/tiny/ili9488.c
> >



-- 
Michael Nazzareno Trimarchi
Co-Founder & Chief Executive Officer
M. +39 347 913 2170
michael@...rulasolutions.com
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