[PATCH v1 12/13] soc: starfive: Add socinfo driver for JHB100 SoC

[Conor Dooley]

On Thu, Apr 02, 2026 at 10:49:44PM -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                                   |  6 ++
>  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 | 90 +++++++++++++++++++
>  8 files changed, 119 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 eb5f6a383146..32bd94a0b94c 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -25325,6 +25325,12 @@ 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:	Documentation/devicetree/bindings/hwinfo/starfive,jhb100-socinfo.yaml
> +F:	drivers/soc/starfive/socinfo/jhb100-socinfo.c

Make sure you add the drivers/soc/starfive directory back to the
starfive soc drivers entry.

> +
>  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"
>  source "drivers/soc/ti/Kconfig"
> diff --git a/drivers/soc/Makefile b/drivers/soc/Makefile
> index c9e689080ceb..009f85ff891a 100644
> --- a/drivers/soc/Makefile
> +++ b/drivers/soc/Makefile
> @@ -30,6 +30,7 @@ obj-y				+= renesas/
>  obj-y				+= rockchip/
>  obj-$(CONFIG_SOC_SAMSUNG)	+= samsung/
>  obj-y				+= sophgo/
> +obj-y				+= starfive/
>  obj-y				+= sunxi/
>  obj-$(CONFIG_ARCH_TEGRA)	+= tegra/
>  obj-y				+= ti/
> diff --git a/drivers/soc/starfive/Kconfig b/drivers/soc/starfive/Kconfig
> new file mode 100644
> index 000000000000..04b020083d3e
> --- /dev/null
> +++ b/drivers/soc/starfive/Kconfig
> @@ -0,0 +1,6 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +menu "StarFive SoC (System On Chip) specific Drivers"
> +
> +source "drivers/soc/starfive/socinfo/Kconfig"
> +
> +endmenu
> diff --git a/drivers/soc/starfive/Makefile b/drivers/soc/starfive/Makefile
> new file mode 100644
> index 000000000000..ca1e609b8104
> --- /dev/null
> +++ b/drivers/soc/starfive/Makefile
> @@ -0,0 +1,2 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +obj-y += socinfo/
> diff --git a/drivers/soc/starfive/socinfo/Kconfig b/drivers/soc/starfive/socinfo/Kconfig
> new file mode 100644
> index 000000000000..0a20382da5d3
> --- /dev/null
> +++ b/drivers/soc/starfive/socinfo/Kconfig
> @@ -0,0 +1,11 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +
> +config STARFIVE_JHB100_SOCINFO
> +	tristate "StarFive JHB100 SoC Information"
> +	depends on ARCH_STARFIVE || COMPILE_TEST
> +	select SOC_BUS
> +	default ARCH_STARFIVE

This can just be default y, since it depends on ARCH_STARFIVE.

> +	help
> +	  Include support for the SoC bus socinfo for the StarFive JHB100 SoC
> +	  platforms to provide information about the SoC family and variant
> +	  to user space.
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