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

Conor Dooley
2026-04-07T15:43:17Z

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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@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@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@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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