Re: [RFC PATCH-for-6.1 v2 6/6] hw/mips/loongson3_virt: Raise CPU clock to 2 GHz

[Huacai Chen]

Hi, Philippe,

On Fri, Apr 9, 2021 at 5:36 PM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> Commit cd3a53b727d ("clock: Add clock_ns_to_ticks() function")
> removed the limitation of using clock with a frequency of 1 GHz
> or more.
>
> The previous commit converted the MIPS CP0 timer to use this
> new clock_ns_to_ticks() function. We can now use a clock of
> 2 GHz with the Loongson3 virt board.
Yes, we can do this, but why should we do this? I don't think this can
bring any advantages.

Huacai
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  hw/mips/loongson3_virt.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/hw/mips/loongson3_virt.c b/hw/mips/loongson3_virt.c
> index b15071defc6..0b72ef8a684 100644
> --- a/hw/mips/loongson3_virt.c
> +++ b/hw/mips/loongson3_virt.c
> @@ -152,7 +152,7 @@ static const MemoryRegionOps loongson3_pm_ops = {
>      }
>  };
>
> -#define DEF_LOONGSON3_FREQ (800 * 1000 * 1000)
> +#define DEF_LOONGSON3_FREQ (2000 * 1000 * 1000)
>
>  static uint64_t get_cpu_freq_hz(void)
>  {
> --
> 2.26.3
>