[U-Boot] [PATCH] sunxi: set the default CPUx frequency of H5 to 816MHz

[Jagan Teki]

On Tue, Oct 31, 2017 at 5:06 AM, Icenowy Zheng <icenowy at aosc.io> wrote:
> Some H5 boards are designed to start at 1.1V CPUx voltage (e.g. Nano Pi
> NEO2), which may not work properly at 1008MHz if the chip's quality is
> not so good.
>
> Lower the default CPUx frequency of H5 to 816MHz.
>
> Signed-off-by: Icenowy Zheng <icenowy at aosc.io>
> ---
>  arch/arm/mach-sunxi/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
> index 09cfec6f57..1fededd0a3 100644
> --- a/arch/arm/mach-sunxi/Kconfig
> +++ b/arch/arm/mach-sunxi/Kconfig
> @@ -397,9 +397,9 @@ config SYS_CLK_FREQ
>         default 1008000000 if MACH_SUN5I
>         default 1008000000 if MACH_SUN6I
>         default 912000000 if MACH_SUN7I
> +       default 816000000 if MACH_SUN50I || MACH_SUN50I_H5
>         default 1008000000 if MACH_SUN8I

Even orangepi pc2 has 1.1v after power-on and it's work fine [1] did
you find an issue with neo2?

[1] http://linux-sunxi.org/Xunlong_Orange_Pi_PC_2#CPU_clock_speed_limit

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.