Thread (29 messages) 29 messages, 4 authors, 2018-02-12

Re: [PATCH v2 14/16] arm64: dts: mt7622: add thermal and related nodes

From: Sean Wang <sean.wang@mediatek.com>
Date: 2018-02-09 03:52:01
Also in: linux-arm-kernel, linux-mediatek, lkml

On Wed, 2018-02-07 at 12:43 +0100, Matthias Brugger wrote:
On 02/06/2018 10:53 AM, sean.wang@mediatek.com wrote:
quoted
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>;
Any reason why this is not part of patch 8/16?
There's no strong reason wanting me to do that. patch 8 has contained a
lot of nodes and patch 16 is present just in v2. So, I felt it should be
a little bit easy that people reviews those patches if they are put into
separate patches. But, It's still fine to make them into one in the next
version.
Regards,
Matthias
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