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arm64: dts: renesas: r8a774c0: Create thermal zone to support IPA
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@renesas.com> and others for r8a77990 SoC. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/1568364608-46548-1-git-send-email-biju.das@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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1 changed files with 16 additions and 3 deletions
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@ -73,6 +73,7 @@ a53_0: cpu@0 {
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compatible = "arm,cortex-a53";
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reg = <0>;
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device_type = "cpu";
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#cooling-cells = <2>;
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power-domains = <&sysc R8A774C0_PD_CA53_CPU0>;
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next-level-cache = <&L2_CA53>;
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enable-method = "psci";
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@ -1905,18 +1906,30 @@ prr: chipid@fff00044 {
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thermal-zones {
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cpu-thermal {
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polling-delay-passive = <250>;
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polling-delay = <1000>;
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thermal-sensors = <&thermal>;
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polling-delay = <0>;
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thermal-sensors = <&thermal 0>;
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sustainable-power = <717>;
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cooling-maps {
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map0 {
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trip = <&target>;
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cooling-device = <&a53_0 0 2>;
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contribution = <1024>;
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};
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};
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trips {
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cpu-crit {
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sensor1_crit: sensor1-crit {
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temperature = <120000>;
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hysteresis = <2000>;
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type = "critical";
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};
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target: trip-point1 {
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temperature = <100000>;
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hysteresis = <2000>;
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type = "passive";
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};
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};
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};
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};
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