Hi,
On Thu, Oct 8, 2020 at 10:10 AM Akhil P Oommen <akhilpo@xxxxxxxxxxxxxx> wrote:
>
> Add cooling-cells property and the cooling maps for the gpu tzones
> to support GPU cooling.
>
> Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/sc7180.dtsi | 29 ++++++++++++++++++++++-------
> 1 file changed, 22 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index d46b383..40d6a28 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -2,7 +2,7 @@
> /*
> * SC7180 SoC device tree source
> *
> - * Copyright (c) 2019, The Linux Foundation. All rights reserved.
> + * Copyright (c) 2019-20, The Linux Foundation. All rights reserved.
> */
>
> #include <dt-bindings/clock/qcom,dispcc-sc7180.h>
> @@ -1885,6 +1885,7 @@
> iommus = <&adreno_smmu 0>;
> operating-points-v2 = <&gpu_opp_table>;
> qcom,gmu = <&gmu>;
> + #cooling-cells = <2>;
Presumably we should add this to the devicetree bindings, too?
> interconnects = <&gem_noc MASTER_GFX3D &mc_virt SLAVE_EBI1>;
> interconnect-names = "gfx-mem";
> @@ -3825,16 +3826,16 @@
> };
>
> gpuss0-thermal {
> - polling-delay-passive = <0>;
> + polling-delay-passive = <100>;
Why did you make this change? I'm pretty sure that we _don't_ want
this since we're using interrupts for the thermal sensor. See commit
22337b91022d ("arm64: dts: qcom: sc7180: Changed polling mode in
Thermal-zones node").
> polling-delay = <0>;
>
> thermal-sensors = <&tsens0 13>;
>
> trips {
> gpuss0_alert0: trip-point0 {
> - temperature = <90000>;
> + temperature = <95000>;
> hysteresis = <2000>;
> - type = "hot";
> + type = "passive";
Matthias probably knows better, but I wonder if we should be making
two passive trip levels like we do with CPU. IIRC this is important
if someone wants to be able to use this with IPA.
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