linux-kernel - Re: [PATCH] arm64: dts: rockchip: Add DSI LCD display on rk3576-evb1

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Message-ID: <5143458.iZASKD2KPV@phil>
Date: Mon, 20 Oct 2025 10:31:53 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Alexey Charkov <alchark@...il.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: rockchip: Add DSI LCD display on rk3576-evb1

Am Montag, 20. Oktober 2025, 10:19:51 Mitteleuropäische Sommerzeit schrieb Alexey Charkov:
> On Thu, Sep 25, 2025 at 12:38 AM Alexey Charkov <alchark@...il.com> wrote:
> >
> > Add support for the Rockchip W552793DBA-V10 LCD+touchscreen assembly which
> > comes physically attached to Rockchip RK3576 EVB1 boards.
> >
> > The display part is driven by the on-chip MIPI DSI controller, and the
> > touchscreen is connected over I2C.
> >
> > Signed-off-by: Alexey Charkov <alchark@...il.com>
> > ---
> > Note that backlight support is left out for now, as it depends on PWM
> > support [0] which has not yet been merged.
> >
> > A workaround is simply `gpioset -c 0 13=1` to set the respective GPIO
> > pin high and thus to light up the display unconditionally.
> >
> > [0] https://lore.kernel.org/lkml/20250602-rk3576-pwm-v2-0-a6434b0ce60c@collabora.com/
> > ---
> >  arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts | 89 ++++++++++++++++++++++++
> >  1 file changed, 89 insertions(+)
> 
> Hi Heiko,
> 
> Any thoughts about this one? Can we perhaps get it merged for -next?

Does the gpio-backlight work on that device?
That would make the gpioset hack unnecessary.


Heiko