[PATCH] mx6: peripheral clock from oscillator

[Fabio Estevam]

On Mon, Oct 19, 2020 at 11:23 AM Jorge Ramirez-Ortiz <jorge at foundries.io> wrote:
>
> In order to be able to run the I2C bus at 400Khz, the chip errata[1]
> recommends that the peripheral clock runs out of the 24MHz oscillator.

I would suggest adding the optee related motivation that you explained
earlier here in the commit log too.

> [1] Rev 2, 10/2019, ERR007805

Not clear what document this refers to.

>         /* Set perclk to source from OSC 24MHz */
> -       if (is_mx6sl())
> +       if (is_mx6sl() || ERRATA_ERR007805)

This gives the impression that imx6sl is not affected by the erratum,
but in fact it is:
https://www.nxp.com/docs/en/errata/IMX6SLCE.pdf

You could define it like this:

#define has_err007805() (is_mx6sl() || is_mx6dl() || is_mx6solo() ||
is_mx6ull())