[PATCH v2 11/12] soc: starfive: Add socinfo driver for JHB100 SoC

[Changhuang Liang]

Hi, Conor

Thanks for the review.

> On Tue, May 12, 2026 at 01:35:20AM -0700, Changhuang Liang wrote:
> > Add socinfo driver for JHB100 SoC. Currently available for
> > distinguishing between the two reversions, A0 and A1.
> >
> > Signed-off-by: Changhuang Liang <changhuang.liang at starfivetech.com>
> > ---
> >  MAINTAINERS                                   |  5 ++
> >  drivers/soc/Kconfig                           |  1 +
> >  drivers/soc/Makefile                          |  1 +
> >  drivers/soc/starfive/Kconfig                  |  6 ++
> >  drivers/soc/starfive/Makefile                 |  2 +
> >  drivers/soc/starfive/socinfo/Kconfig          | 11 +++
> >  drivers/soc/starfive/socinfo/Makefile         |  2 +
> >  drivers/soc/starfive/socinfo/jhb100-socinfo.c | 80
> > +++++++++++++++++++
> >  8 files changed, 108 insertions(+)
> >  create mode 100644 drivers/soc/starfive/Kconfig  create mode 100644
> > drivers/soc/starfive/Makefile  create mode 100644
> > drivers/soc/starfive/socinfo/Kconfig
> >  create mode 100644 drivers/soc/starfive/socinfo/Makefile
> >  create mode 100644 drivers/soc/starfive/socinfo/jhb100-socinfo.c
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS index
> > 6f6aac7cea95..66175f453d20 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -25613,6 +25613,11 @@ S:	Maintained
> >  F:	drivers/reset/starfive/reset-starfive-jhb1*
> >  F:	include/dt-bindings/reset/starfive,jhb1*.h
> >
> > +STARFIVE JHB100 SOCINFO DRIVER
> > +M:	Changhuang Liang <changhuang.liang at starfivetech.com>
> > +S:	Maintained
> > +F:	drivers/soc/starfive/
> 
> FWIW, this is not what I asked for in v1, this should remain the full path to the
> driver. I wanted you to add this directory back to the "STARFIVE SOC
> DRIVERS" entry, since it's me that'll be applying patches for this driver.

Sorry, I misunderstood what you meant.

> 
> > +
> >  STARFIVE JHB100 SYSCON
> >  M:	Changhuang Liang <changhuang.liang at starfivetech.com>
> >  S:	Maintained
> > diff --git a/drivers/soc/Kconfig b/drivers/soc/Kconfig index
> > a2d65adffb80..b3b01fc38139 100644
> > --- a/drivers/soc/Kconfig
> > +++ b/drivers/soc/Kconfig
> > @@ -24,6 +24,7 @@ source "drivers/soc/renesas/Kconfig"
> >  source "drivers/soc/rockchip/Kconfig"
> >  source "drivers/soc/samsung/Kconfig"
> >  source "drivers/soc/sophgo/Kconfig"
> > +source "drivers/soc/starfive/Kconfig"
> >  source "drivers/soc/sunxi/Kconfig"
> >  source "drivers/soc/tegra/Kconfig"

[...]

> > +	pr_info("StarFive %s SoC rev(%s)\n", attrs->soc_id,
> > +attrs->revision);
> > +
> > +	return 0;
> > +}
> > +
> > +early_initcall(starfive_socinfo_init);
> 
> Does this really need to be an early initcall btw?

Yes, there are some drivers that need to use soc_device_match() to match different 
revisions, in order to handle the processes caused by differences between revisions. 
So there's no harm in initializing this driver earlier.

Best Regards,
Changhuang