On 11 Sep 2014 12:30, Doug Anderson writes:
> We should be able to talk to the PMIC at 400kHz. No need to talk at
> the slow 100kHz.
>
> As measured by ftrace (with a bunch of extra patches, since cpufreq
> for rk808 hasn't landed yet):
> before this change: cpu0_set_target() => ~500us
> after this change: cpu0_set_target() => ~300us
>
> Signed-off-by: Doug Anderson <dianders at chromium.org>
> ---
> arch/arm/boot/dts/rk3288-evb-rk808.dts | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/rk3288-evb-rk808.dts b/arch/arm/boot/dts/rk3288-evb-rk808.dts
> index 36db177..ff522f8 100644
> --- a/arch/arm/boot/dts/rk3288-evb-rk808.dts
> +++ b/arch/arm/boot/dts/rk3288-evb-rk808.dts
> @@ -18,6 +18,7 @@
> };
>
> &i2c0 {
> + clock-frequency = <400000>;
> status = "okay";
>
> rk808: pmic at 1b {
I have tested on rk3288-pinky board, it work well. so
Reviewed-by Addy Ke <addy.ke at rock-chips.com>
Tested-by Addy Ke <addy.ke at rock-chips.com>
