On Wed, Dec 8, 2021 at 3:27 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> Setup a thermal zone driven by SoC temperature sensor.
> Create passive trip points and bind them to CPUFreq cooling
> device that supports power extension.
>
> Based on the work done by Dien Pham <dien.pham.ry@xxxxxxxxxxx>
> and others for r8a77990 SoC.
>
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
LGTM (I'm no thermal expert, so an additional pair of eyes wouldn't hurt), so
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
i.e. will queue in renesas-devel for v5.17.
> --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
> @@ -88,6 +88,7 @@
> compatible = "arm,cortex-a55";
> reg = <0>;
> device_type = "cpu";
> + #cooling-cells = <2>;
> next-level-cache = <&L3_CA55>;
> enable-method = "psci";
> clocks = <&cpg CPG_CORE R9A07G044_CLK_I>;
> @@ -917,6 +918,15 @@
> polling-delay-passive = <250>;
> polling-delay = <1000>;
> thermal-sensors = <&tsu 0>;
> + sustainable-power = <717>;
> +
> + cooling-maps {
> + map0 {
> + trip = <&target>;
> + cooling-device = <&cpu0 0 2>;
> + contribution = <1024>;
> + };
> + };
>
> trips {
> sensor_crit: sensor-crit {
> @@ -924,6 +934,12 @@
> hysteresis = <1000>;
> type = "critical";
> };
> +
> + target: trip-point {
> + temperature = <100000>;
> + hysteresis = <1000>;
> + type = "passive";
> + };
> };
> };
> };
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
