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SubjectRe: [PATCH] ARM: exynos: add machine description for ODROID-XU3/4
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I don't think this approach scales at all. DietPi can just read the devicetree
through sysfs and retrieve the compatible and/or model of the base node.

- Tobias

Dongjin Kim wrote:
> This patch is to add the machine descriptions for ODROID-XU3/4 boards
> in order to present the hardware name at /proc/cputinfo rather than
> "SAMSUNG EXYNOS (Flattened Device Tree)". An embedded open source project,
> such as DietPi, reads the hardware name to run different features.
>
> $ cat /proc/cpuinfo | grep Hardware
> Hardware : ODROID-XU4
>
> Signed-off-by: Dongjin Kim <tobetter@gmail.com>
> ---
> arch/arm/mach-exynos/exynos.c | 28 ++++++++++++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
> index c404c15ad07f..6197dbf9f48b 100644
> --- a/arch/arm/mach-exynos/exynos.c
> +++ b/arch/arm/mach-exynos/exynos.c
> @@ -241,3 +241,31 @@ DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)")
> .dt_compat = exynos_dt_compat,
> .dt_fixup = exynos_dt_fixup,
> MACHINE_END
> +
> +#define ODROID_MACHINE_START(name, compat) \
> + DT_MACHINE_START(EXYNOS5422_ODROID_##name, "ODROID-"#name) \
> + .l2c_aux_val = 0x3c400001, \
> + .l2c_aux_mask = 0xc20fffff, \
> + .smp = smp_ops(exynos_smp_ops), \
> + .map_io = exynos_init_io, \
> + .init_early = exynos_firmware_init, \
> + .init_irq = exynos_init_irq, \
> + .init_machine = exynos_dt_machine_init, \
> + .init_late = exynos_init_late, \
> + .dt_compat = compat, \
> + .dt_fixup = exynos_dt_fixup, \
> + MACHINE_END
> +
> +static char const *const exynos5422_odroidxu3_dt_compat[] __initconst = {
> + "hardkernel,odroid-xu3",
> + "hardkernel,odroid-xu3-lite",
> + NULL,
> +};
> +
> +static char const *const exynos5422_odroidxu4_dt_compat[] __initconst = {
> + "hardkernel,odroid-xu4",
> + NULL,
> +};
> +
> +ODROID_MACHINE_START(XU3, exynos5422_odroidxu3_dt_compat)
> +ODROID_MACHINE_START(XU4, exynos5422_odroidxu4_dt_compat)
>

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