[PATCH] arm64: dts: meson: add thermal zones to meson gx devices

From: Christian Hewitt
Date: Sun Mar 15 2020 - 23:21:54 EST

Adapt and update current VIM2 thermal zones support so that zones are
available on all meson GXBB/GXL/GXM devices - similar to changes made
for G12A/G12B/SM1 devices.

Suggested-by: Nick Xie <nick@xxxxxxxxxx>
Signed-off-by: Christian Hewitt <christianshewitt@xxxxxxxxx>
---
arch/arm64/boot/dts/amlogic/meson-gx.dtsi | 52 +++++++++++++
.../boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 87 ++++------------------
arch/arm64/boot/dts/amlogic/meson-gxm.dtsi | 28 +++++++
3 files changed, 95 insertions(+), 72 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 40db06e..03f79fe 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -12,6 +12,7 @@
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>

/ {
interrupt-parent = <&gic>;
@@ -83,6 +84,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 0>;
+ #cooling-cells = <2>;
};

cpu1: cpu@1 {
@@ -92,6 +94,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 0>;
+ #cooling-cells = <2>;
};

cpu2: cpu@2 {
@@ -101,6 +104,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 0>;
+ #cooling-cells = <2>;
};

cpu3: cpu@3 {
@@ -110,6 +114,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 0>;
+ #cooling-cells = <2>;
};

l2: l2-cache0 {
@@ -117,6 +122,53 @@
};
};

+ thermal-zones {
+ cpu-thermal {
+ polling-delay-passive = <250>; /* milliseconds */
+ polling-delay = <1000>; /* milliseconds */
+
+ thermal-sensors = <&scpi_sensors 0>;
+
+ trips {
+ cpu_passive: cpu-passive {
+ temperature = <80000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "passive";
+ };
+
+ cpu_hot: cpu-hot {
+ temperature = <90000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "hot";
+ };
+
+ cpu_critical: cpu-critical {
+ temperature = <110000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "critical";
+ };
+ };
+
+ cpu_cooling_maps: cooling-maps {
+ map0 {
+ trip = <&cpu_passive>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ map1 {
+ trip = <&cpu_hot>;
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
+
arm-pmu {
compatible = "arm,cortex-a53-pmu";
interrupts = <GIC_SPI 137 IRQ_TYPE_LEVEL_HIGH>,
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
index d5dc128..27eeab7 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts
@@ -8,7 +8,6 @@
/dts-v1/;

#include <dt-bindings/input/input.h>
-#include <dt-bindings/thermal/thermal.h>

#include "meson-gxm.dtsi"

@@ -100,49 +99,6 @@
clock-names = "ext_clock";
};

- thermal-zones {
- cpu-thermal {
- polling-delay-passive = <250>; /* milliseconds */
- polling-delay = <1000>; /* milliseconds */
-
- thermal-sensors = <&scpi_sensors 0>;
-
- trips {
- cpu_alert0: cpu-alert0 {
- temperature = <70000>; /* millicelsius */
- hysteresis = <2000>; /* millicelsius */
- type = "active";
- };
-
- cpu_alert1: cpu-alert1 {
- temperature = <80000>; /* millicelsius */
- hysteresis = <2000>; /* millicelsius */
- type = "passive";
- };
- };
-
- cooling-maps {
- map0 {
- trip = <&cpu_alert0>;
- cooling-device = <&gpio_fan THERMAL_NO_LIMIT 1>;
- };
-
- map1 {
- trip = <&cpu_alert1>;
- cooling-device = <&gpio_fan 2 THERMAL_NO_LIMIT>,
- <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
- <&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
- };
- };
- };
- };
-
hdmi_5v: regulator-hdmi-5v {
compatible = "regulator-fixed";

@@ -198,36 +154,23 @@
hdmi-phandle = <&hdmi_tx>;
};

-&cpu0 {
- #cooling-cells = <2>;
-};
-
-&cpu1 {
- #cooling-cells = <2>;
-};
-
-&cpu2 {
- #cooling-cells = <2>;
-};
-
-&cpu3 {
- #cooling-cells = <2>;
-};
-
-&cpu4 {
- #cooling-cells = <2>;
-};

-&cpu5 {
- #cooling-cells = <2>;
-};
-
-&cpu6 {
- #cooling-cells = <2>;
-};
+&cpu_cooling_maps {
+ map0 {
+ cooling-device = <&gpio_fan THERMAL_NO_LIMIT 1>;
+ };

-&cpu7 {
- #cooling-cells = <2>;
+ map1 {
+ cooling-device = <&gpio_fan 2 THERMAL_NO_LIMIT>,
+ <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
};

&ethmac {
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi
index 5ff64a0..b6f89f1 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxm.dtsi
@@ -49,6 +49,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 1>;
+ #cooling-cells = <2>;
};

cpu5: cpu@101 {
@@ -58,6 +59,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 1>;
+ #cooling-cells = <2>;
};

cpu6: cpu@102 {
@@ -67,6 +69,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 1>;
+ #cooling-cells = <2>;
};

cpu7: cpu@103 {
@@ -76,6 +79,7 @@
enable-method = "psci";
next-level-cache = <&l2>;
clocks = <&scpi_dvfs 1>;
+ #cooling-cells = <2>;
};
};
};
@@ -124,6 +128,30 @@
compatible = "amlogic,meson-gxm-aoclkc", "amlogic,meson-gx-aoclkc";
};

+&cpu_cooling_maps {
+ map0 {
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ map1 {
+ cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+};
+
&saradc {
compatible = "amlogic,meson-gxm-saradc", "amlogic,meson-saradc";
};
--
2.7.4