[PATCH] ARM: dts: nxp/imx: limit sk-imx53 supported frequencies

[Dmitry Baryshkov]

On Sun, 9 Jul 2023 at 15:25, Fabio Estevam <festevam at gmail.com> wrote:
>
> On Sat, Jul 8, 2023 at 2:37 PM Dmitry Baryshkov
> <dmitry.baryshkov at linaro.org> wrote:
> >
> > The SK-IMX53 board bearing i.MX536 CPU is not stable when running at 1.2
> > GHz. Disable that frequency.
> >
> > Note, officially i.MX536 is rated up to 800 MHz, but running it at 1 GHz
> > proved to be stable.
>
> If the datasheet says the maximum operating frequency is 800 MHz, just
> adhere to it.
>
> Running at 1 GHz on an 800 MHz device is not guaranteed that it works
> on all the temperature range and across all devices.

I had to doublecheck this. Original board manufacturer (Starterkit)
lists it as "FreeScale iMX536 (ARM Cortex-A8 1000MHz, ...". However I
have verified that the board has MCIMX536AVV8C, SoC, which indeed is
rated only up to 800 MHz. I'll send v2 using max 800 MHz for safety.

-- 
With best wishes
Dmitry