From cd21c54ad9c4c838e96d4d6e1bc9694eac1aa798 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Tue, 4 Jun 2019 18:57:58 +0200 Subject: [PATCH] arm64: dts: rockchip: Define values for the IPA governor for rock960 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Currently the default thermal values for the rk3399-rock960 board is inherited from the generic definition in rk3399.dtsi. In order to ensure the rock960 has more room for througput before being capped by the thermal framework and is correctly supported by the IPA governor, let's define the power values and the right trip points for better performances: - sustainable power is tested to be 1550mW - increase the first mitigation point to 75°C in order to get better performances - the first trip point is 65°C in order to let the IPA to collect enough data for the PID regulation when it reaches 75°C - restrict the cooling device to the big CPUs as the little CPUs contribution to the heating effect can be considered negligible The intelligent power allocator PID coefficient to be set in sysfs are: k_d: 0 k_po: 79 k_i: 10 k_pu: 50 Signed-off-by: Daniel Lezcano Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399-rock960.dts | 39 +++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock960.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock960.dts index c624b4e73129..437a75f31ad4 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock960.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock960.dts @@ -124,6 +124,45 @@ status = "okay"; }; +&thermal_zones { + cpu_thermal: cpu { + polling-delay-passive = <100>; + polling-delay = <1000>; + thermal-sensors = <&tsadc 0>; + sustainable-power = <1550>; + + trips { + cpu_alert0: cpu_alert0 { + temperature = <65000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_alert1: cpu_alert1 { + temperature = <75000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_crit: cpu_crit { + temperature = <95000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + + cooling-maps { + map0 { + + trip = <&cpu_alert1>; + cooling-device = + <&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu_b1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + }; +}; + &usbdrd_dwc3_0 { dr_mode = "otg"; }; -- 2.11.4.GIT