Hi Uli,
On Fri, Aug 17, 2018 at 3:19 PM Ulrich Hecht <uli+renesas@xxxxxxxx> wrote:
> From: Khiem Nguyen <khiem.nguyen.xt@xxxxxxxxxxxxxxx>
>
> Enable cpuidle (core shutdown) support for R-Car H3 CA57 cores.
>
> Parameters were found after evaluation by gaku.inami.xw@xxxxxxxxxxxxxx; they
> help to keep the performance and reduce the power consumption.
>
> Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@xxxxxxxxxxxxxxx>
> [dien.pham.ry: Apply new cpuidle parameters]
> Signed-off-by: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
> Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
> Signed-off-by: Ulrich Hecht <uli+renesas@xxxxxxxx>
Thanks for your patch!
> --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
> @@ -221,6 +225,20 @@
> cache-unified;
> cache-level = <2>;
> };
> +
> + idle-states {
> + entry-method = "psci";
> +
> + CPU_SLEEP_0: cpu-sleep-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x0010000>;
> + local-timer-stop;
> + entry-latency-us = <400>;
> + exit-latency-us = <500>;
> + min-residency-us = <4000>;
> + status = "okay";
Usually we just don't specify status for "virtual" nodes (applies to the
other patches, too).
> + };
> + };
> };
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
