RE: [PATCH v2] soc: renesas: Add support for reading product revision for RZ/G2L family

[Biju Das]

Hi Geert,

> Subject: Re: [PATCH v2] soc: renesas: Add support for reading product
> revision for RZ/G2L family
> 
> Hi Biju,
> 
> On Wed, Feb 2, 2022 at 12:20 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> wrote:
> > > Subject: Re: [PATCH v2] soc: renesas: Add support for reading
> > > product revision for RZ/G2L family On Wed, Feb 2, 2022 at 10:51 AM
> > > Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > > wrote:
> > > > > Subject: Re: [PATCH v2] soc: renesas: Add support for reading
> > > > > product revision for RZ/G2L family On Fri, Jan 21, 2022 at 2:41
> > > > > AM Lad Prabhakar <prabhakar.mahadev- lad.rj@xxxxxxxxxxxxxx> wrote:
> > > > > > From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> As per RZ/G2L HW
> > > > > > manual (Rev.1.00 Sep, 2021) DEV_ID [31:28] indicates product
> > > > > > revision. Use this information to populate the revision info
> > > > > > for RZ/G2L family.
> > > > > >
> > > > > > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > > > > > Signed-off-by: Lad Prabhakar
> > > > > > <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> > >
> > > > > > --- a/drivers/soc/renesas/renesas-soc.c
> > > > > > +++ b/drivers/soc/renesas/renesas-soc.c
> > > > > > @@ -405,41 +417,38 @@ static int __init renesas_soc_init(void)
> > > > > >
> > > > > >                         eshi = ((product >> 4) & 0x0f) + 1;
> > > > > >                         eslo = product & 0xf;
> > > > > > +                       soc_dev_attr->revision =
> > > > > > + kasprintf(GFP_KERNEL,
> > > > > "ES%u.%u",
> > > > > > +
> > > > > > + eshi,
> > > eslo);
> > > > > > +               }  else if (id == &id_rzg2l) {
> > > > > > +                       eshi =  ((product >> 28) & 0x0f);
> > > > > > +                       soc_dev_attr->revision =
> > > > > > + kasprintf(GFP_KERNEL,
> > > > > "Rev %u",
> > > > > > +
> > > > > > + eshi);
> > > > >
> > > > > Would you mind if I would drop the "Rev " while applying?
> > > >
> > > > Kernel reports the below message after dropping Rev. Is it OK?
> > > >
> > > > [    0.018297] Detected Renesas RZ/G2L r9a07g044 1
> > >
> > > That's indeed not so nice...
> > >
> > > Either we have to add it back, or do something like:
> >
> > This is much better.
> >
> > [    0.003427] Detected Renesas RZ/G2L r9a07g044 Rev 1
> > root@smarc-rzg2l:~# for i in machine family soc_id revision; do echo
> > -n "$i: ";cat /sys/devices/soc0/$i; done
> > machine: Renesas SMARC EVK based on r9a07g044l2
> > family: RZ/G2L
> > soc_id: r9a07g044
> > revision: 1
> > root@smarc-rzg2l:~#
> >
> > >
> > > -       pr_info("Detected Renesas %s %s %s\n", soc_dev_attr->family,
> > > -               soc_dev_attr->soc_id, soc_dev_attr->revision ?: "");
> > > +       pr_info("Detected Renesas %s %s%s%s\n", soc_dev_attr->family,
> > > +               soc_dev_attr->soc_id, soc_dev_attr->revision ? " Rev "
> :
> > > "",
> > > +               soc_dev_attr->revision ?: "");
> > >
> >
> > Will you post this change or Do you want me to send the patch?
> >
> > Please let me know.
> 
> I'll send a patch, to be folded in to the original.

Thanks,

Biju