Re: [PATCH v2 2/5] ARM: mstar: Add machine for MStar/Sigmastar infinity/mercury family ARMv7 SoCs

Andreas Färber
2020-06-11T12:58:57Z

Am 10.06.20 um 11:04 schrieb Daniel Palmer:
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index 59fde2d598d8..e7f4ca060c0f 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -197,6 +197,7 @@ machine-$(CONFIG_ARCH_MXC) += imx
> machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
> machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
> machine-$(CONFIG_ARCH_MXS) += mxs
> +machine-$(CONFIG_ARCH_MSTARV7) += mstar
> machine-$(CONFIG_ARCH_NOMADIK) += nomadik
> machine-$(CONFIG_ARCH_NPCM) += npcm
> machine-$(CONFIG_ARCH_NSPIRE) += nspire
> diff --git a/arch/arm/mach-mstar/Kconfig b/arch/arm/mach-mstar/Kconfig
> new file mode 100644
> index 000000000000..6235d0a7860a
> --- /dev/null
> +++ b/arch/arm/mach-mstar/Kconfig
> @@ -0,0 +1,26 @@
> +menuconfig ARCH_MSTARV7

You call the dir mach-mstar, but name the Kconfig ARCH_MSTARV7. I had
previously been asked to just use the vendor name, so this should
probably be just ARCH_MSTAR. Outside arch/arm/ you can then use ARM &&
ARCH_MSTAR condition to make things 32-bit only, allowing to reuse
ARCH_MSTAR for arm64 or whatever.

> + bool "MStar/Sigmastar ARMv7 SoC Support"
> + depends on ARCH_MULTI_V7
> + select ARM_GIC
> + select ARM_HEAVY_MB
> + help
> + Support for newer MStar/Sigmastar SoC families that are
> + based on ARMv7 cores like the Cortex A7 and share the same
> + basic hardware like the infinity and mercury series.
> +
> +if ARCH_MSTARV7
> +
> +config MACH_INFINITY
> + bool "MStar/Sigmastar infinity SoC support"
> + default ARCH_MSTARV7
> + help
> + Support for MStar/Sigmastar infinity IP camera SoCs.
> +
> +config MACH_MERCURY
> + bool "MStar/Sigmastar mercury SoC support"
> + default ARCH_MSTARV7
> + help
> + Support for MStar/Sigmastar mercury dash camera SoCs.
> + Note that older Mercury2 SoCs are ARM9 based and not supported.

Is this comment really helpful? This menu item would only seem to come
up after having selected multi_v7, which kind of rules out ARM9.

Consider adding mercury in a second step?

> +
> +endif

Regards,
Andreas

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