diff mbox series

[RESEND,4/4] arm64: dts: imx8mm: Add thermal zone support

Message ID 1582186646-22096-4-git-send-email-Anson.Huang@nxp.com (mailing list archive)
State New, archived
Delegated to: Daniel Lezcano
Headers show
Series [RESEND,1/4] dt-bindings: thermal: imx8mm-thermal: Add binding doc for i.MX8MM | expand

Commit Message

Anson Huang Feb. 20, 2020, 8:17 a.m. UTC 
Add thermal zone and tmu node to support i.MX8MM thermal
driver, ONLY cpu thermal zone is supported, and cpu cooling
is also added.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
 arch/arm64/boot/dts/freescale/imx8mm.dtsi | 43 +++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index b3d0b29..e438095 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -68,6 +68,7 @@ 
 			nvmem-cells = <&cpu_speed_grade>;
 			nvmem-cell-names = "speed_grade";
 			cpu-idle-states = <&cpu_pd_wait>;
+			#cooling-cells = <2>;
 		};
 
 		A53_1: cpu@1 {
@@ -80,6 +81,7 @@ 
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			cpu-idle-states = <&cpu_pd_wait>;
+			#cooling-cells = <2>;
 		};
 
 		A53_2: cpu@2 {
@@ -92,6 +94,7 @@ 
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			cpu-idle-states = <&cpu_pd_wait>;
+			#cooling-cells = <2>;
 		};
 
 		A53_3: cpu@3 {
@@ -104,6 +107,7 @@ 
 			next-level-cache = <&A53_L2>;
 			operating-points-v2 = <&a53_opp_table>;
 			cpu-idle-states = <&cpu_pd_wait>;
+			#cooling-cells = <2>;
 		};
 
 		A53_L2: l2-cache0 {
@@ -204,6 +208,38 @@ 
 		arm,no-tick-in-suspend;
 	};
 
+	thermal-zones {
+		cpu-thermal {
+			polling-delay-passive = <250>;
+			polling-delay = <2000>;
+			thermal-sensors = <&tmu>;
+			trips {
+				cpu_alert0: trip0 {
+					temperature = <85000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_crit0: trip1 {
+					temperature = <95000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device =
+						<&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&A53_1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&A53_2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+						<&A53_3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+		};
+	};
+
 	usbphynop1: usbphynop1 {
 		compatible = "usb-nop-xceiv";
 		clocks = <&clk IMX8MM_CLK_USB_PHY_REF>;
@@ -363,6 +399,13 @@ 
 				gpio-ranges = <&iomuxc 0 119 30>;
 			};
 
+			tmu: tmu@30260000 {
+				compatible = "fsl,imx8mm-tmu";
+				reg = <0x30260000 0x10000>;
+				clocks = <&clk IMX8MM_CLK_TMU_ROOT>;
+				#thermal-sensor-cells = <0>;
+			};
+
 			wdog1: watchdog@30280000 {
 				compatible = "fsl,imx8mm-wdt", "fsl,imx21-wdt";
 				reg = <0x30280000 0x10000>;