arm64: dts: renesas: r9a07g044: 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.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20211208142729.2456-3-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi
index ea52858..2639fd3 100644 (file)
--- 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";
+                               };
                        };
                };
        };