Re: [PATCH v4 1/1] arm64: dts: freescale: add pixpaper display overlay for i.MX93 FRDM

[Frank Li <Frank.li@nxp.com>]

On Fri, Feb 06, 2026 at 12:14:21AM +0800, Wig Cheng wrote:
> >
> > On Thu, Jan 29, 2026 at 10:29:10AM +0800, Wig Cheng wrote:
> > >Add device tree overlay to support the MayQueen PixPaper e-paper display
> > >on the NXP i.MX93 FRDM board. The display is connected via LPSPI3
> > >interface and uses GPIO pins for reset, busy and DC control.
> > >
> > >The overlay configures:
> > >    - LPSPI3 pinmux for SPI communication (MOSI, MISO, CLK, CE0)
> > >    - PixPaper display device with proper GPIO assignments
> > >    - SPI frequency set to 5MHz for stable operation
> > >
> > >Enable Open-EP Community pixpaper-213-c support on NXP i.MX93.
> > >
> > >Signed-off-by: Wig Cheng <onlywig@gmail.com>
> >
> > Reviewed-by: Peng Fan <peng.fan@nxp.com>
>
> Hi reviewers,
>
> Thanks to Peng for the review.
>
> Just a gentle ping on this patch.
> Please let me know if any further reviews or changes are needed.

There are CHECK_DTBS warning

arch/arm64/boot/dts/freescale/imx93-11x11-frdm-pixpaper.dtb: display@0 (mayqueen,pixpaper): spi-max-frequency: 5000000 is greater than the maximum of 1000000
	from schema $id: http://devicetree.org/schemas/display/mayqueen,pixpaper.yaml

Does 1000000 work for spi-max-frequency? or need update binding doc?

Frank

>
> Thanks,
> Wig