Re: [PATCH 1/2] crypto: caam: Change the i.MX8MQ check support all i.MX8M variants

[Adam Ford <aford173@gmail.com>]

On Wed, Dec 4, 2019 at 5:38 AM Schrempf Frieder
<frieder.schrempf@kontron.de> wrote:
>
> Hi Adam,
>
> On 30.11.19 23:51, Adam Ford wrote:
> > The i.MX8M Mini uses the same crypto engine as the i.MX8MQ, but
> > the driver is restricting the check to just the i.MX8MQ.
> >
> > This patch lets the driver support all i.MX8M Variants if enabled.
> >
> > Signed-off-by: Adam Ford <aford173@gmail.com>
>
> What about the following lines in run_descriptor_deco0()? Does this
> condition also apply to i.MX8MM?

I think that's a question for NXP.  I am not seeing that in the NXP
Linux Release, and I don't have an 8MQ to compare.

I was able to get the driver working on the i.MXMM with the patch.

NXP  Team,

Do you have any opinions on this?

adam
>
> drivers/crypto/caam/ctrl.c:
>
>         if (ctrlpriv->virt_en == 1 ||
>             /*
>              * Apparently on i.MX8MQ it doesn't matter if virt_en == 1
>              * and the following steps should be performed regardless
>              */
>             of_machine_is_compatible("fsl,imx8mq")) {
>                 clrsetbits_32(&ctrl->deco_rsr, 0, DECORSR_JR0);
>
>                 while (!(rd_reg32(&ctrl->deco_rsr) & DECORSR_VALID) &&
>                        --timeout)
>                         cpu_relax();
>
>                 timeout = 100000;
>         }
>
> Regards,
> Frieder
>
> >
> > diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
> > index db22777d59b4..1ce03f8961b6 100644
> > --- a/drivers/crypto/caam/ctrl.c
> > +++ b/drivers/crypto/caam/ctrl.c
> > @@ -527,7 +527,7 @@ static const struct soc_device_attribute caam_imx_soc_table[] = {
> >       { .soc_id = "i.MX6UL", .data = &caam_imx6ul_data },
> >       { .soc_id = "i.MX6*",  .data = &caam_imx6_data },
> >       { .soc_id = "i.MX7*",  .data = &caam_imx7_data },
> > -     { .soc_id = "i.MX8MQ", .data = &caam_imx7_data },
> > +     { .soc_id = "i.MX8M*", .data = &caam_imx7_data },
> >       { .family = "Freescale i.MX" },
> >       { /* sentinel */ }
> >   };
> >