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Subject[PATCH v2 14/16] arm64: dts: mt7622: add thermal and related nodes
Date
From: Sean Wang <sean.wang@mediatek.com>

add nodes for the thermal controller and associated thermal zone using
CPU as the cooling device for each trip point. In addition, add a fixup
for thermal_calibration on nvmem should be 12 bytes as the minimal
requirement.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
arch/arm64/boot/dts/mediatek/mt7622.dtsi | 72 +++++++++++++++++++++++++++++++-
1 file changed, 71 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
index e6dd4f6..6cf67dd 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
@@ -12,6 +12,7 @@
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/power/mt7622-power.h>
#include <dt-bindings/reset/mt7622-reset.h>
+#include <dt-bindings/thermal/thermal.h>

/ {
compatible = "mediatek,mt7622";
@@ -75,6 +76,7 @@
<&apmixedsys CLK_APMIXED_MAIN_CORE_EN>;
clock-names = "cpu", "intermediate";
operating-points-v2 = <&cpu_opp_table>;
+ #cooling-cells = <2>;
enable-method = "psci";
clock-frequency = <1300000000>;
};
@@ -119,6 +121,58 @@
};
};

+ thermal-zones {
+ cpu_thermal: cpu-thermal {
+ polling-delay-passive = <1000>;
+ polling-delay = <1000>;
+
+ thermal-sensors = <&thermal 0>;
+
+ trips {
+ cpu_passive: cpu-passive {
+ temperature = <47000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
+ cpu_active: cpu-active {
+ temperature = <67000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+
+ cpu_hot: cpu-hot {
+ temperature = <87000>;
+ hysteresis = <2000>;
+ type = "hot";
+ };
+
+ cpu-crit {
+ temperature = <107000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&cpu_passive>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ map1 {
+ trip = <&cpu_active>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ map2 {
+ trip = <&cpu_hot>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
+
timer {
compatible = "arm,armv8-timer";
interrupt-parent = <&gic>;
@@ -201,7 +255,7 @@
#size-cells = <1>;

thermal_calibration: calib@198 {
- reg = <0x198 0x8>;
+ reg = <0x198 0xc>;
};
};

@@ -384,6 +438,22 @@
status = "disabled";
};

+ thermal: thermal@1100b000 {
+ #thermal-sensor-cells = <1>;
+ compatible = "mediatek,mt7622-thermal";
+ reg = <0 0x1100b000 0 0x1000>;
+ interrupts = <0 78 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&pericfg CLK_PERI_THERM_PD>,
+ <&pericfg CLK_PERI_AUXADC_PD>;
+ clock-names = "therm", "auxadc";
+ resets = <&pericfg MT7622_PERI_THERM_SW_RST>;
+ reset-names = "therm";
+ mediatek,auxadc = <&auxadc>;
+ mediatek,apmixedsys = <&apmixedsys>;
+ nvmem-cells = <&thermal_calibration>;
+ nvmem-cell-names = "calibration-data";
+ };
+
btif: serial@1100c000 {
compatible = "mediatek,mt7622-btif",
"mediatek,mtk-btif";
--
2.7.4
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