From: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
Setup a thermal zone driven by SoC temperature sensor.
Create passive trip points and bind them to CPUFreq cooling
device that supports power extension.
In R-Car Gen3, IPA is supportted for only one channel
(on H3/M3/M3N board, it is channel THS3). Reason:
Currently, IPA controls base on only CPU temperature.
And only one thermal channel is assembled closest
CPU cores is selected as target of IPA.
If other channels are used, IPA controlling is not properly.
Signed-off-by: Dien Pham <dien.pham.ry@xxxxxxxxxxx>
Signed-off-by: An Huynh <an.huynh.uj@xxxxxxxxxxxxxxx>
[takeshi.kihara.df: fix W=1 dtc unit_address_vs_reg warnings]
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx>
---
This patch is based on the devel branch of Simon Horman's renesas tree.
arch/arm64/boot/dts/renesas/r8a77965.dtsi | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index 6dc9b1f..a5bf342 100644
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
@@ -111,6 +111,10 @@
power-domains = <&sysc R8A77965_PD_CA57_CPU0>;
next-level-cache = <&L2_CA57>;
enable-method = "psci";
+ #cooling-cells = <2>;
+ dynamic-power-coefficient = <854>;
+ cooling-min-level = <0>;
+ cooling-max-level = <2>;
clocks = <&cpg CPG_CORE R8A77965_CLK_Z>;
operating-points-v2 = <&cluster0_opp>;
};
@@ -2236,6 +2240,7 @@
polling-delay-passive = <250>;
polling-delay = <1000>;
thermal-sensors = <&tsc 0>;
+ sustainable-power = <2439>;
trips {
sensor1_crit: sensor1-crit {
@@ -2250,6 +2255,7 @@
polling-delay-passive = <250>;
polling-delay = <1000>;
thermal-sensors = <&tsc 1>;
+ sustainable-power = <2439>;
trips {
sensor2_crit: sensor2-crit {
@@ -2264,14 +2270,37 @@
polling-delay-passive = <250>;
polling-delay = <1000>;
thermal-sensors = <&tsc 2>;
+ sustainable-power = <2439>;
trips {
+ threshold: trip-point0 {
+ /* miliCelsius */
+ temperature = <90000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
+ target: trip-point1 {
+ /* miliCelsius */
+ temperature = <100000>;
+ hysteresis = <1000>;
+ type = "passive";
+ };
+
sensor3_crit: sensor3-crit {
temperature = <120000>;
hysteresis = <1000>;
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&target>;
+ cooling-device = <&a57_0 0 2>;
+ contribution = <1024>;
+ };
+ };
};
};
--
1.9.1
