Merge tag 'samsung-dt-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt

Merge "ARM: EXYNOS: dts for 4.6, 2nd pull" from Krzysztof Kozlowski:

Samsung DeviceTree updates and improvements for v4.6, second round:
1. Split common reboot/poweroff node to separate DTSI.
2. Don't overheat Odroid XU3 by cooling CPU with cpufreq.

* tag 'samsung-dt-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: dts: exynos: Don't overheat the Odroid XU3-Lite on high load
  ARM: dts: exynos: Add cooling levels for Exynos5422/5800 CPUs
  ARM: dts: exynos: Add cooling levels for Exynos5420 CPUs
  ARM: dts: exynos: Move syscon reboot/poweroff to common dtsi

8 files changed, 124 insertions, 57 deletions

diff --git a/arch/arm/boot/dts/exynos-syscon-restart.dtsi b/arch/arm/boot/dts/exynos-syscon-restart.dtsi
new file mode 100644
index 000000000000..09a2040054ed
--- /dev/null
+++ b/arch/arm/boot/dts/exynos-syscon-restart.dtsi
@@ -0,0 +1,27 @@
+/*
+ * Samsung's Exynos SoC syscon reboot/poweroff nodes common definition.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/ {
+	soc {
+		compatible = "simple-bus";
+
+		poweroff: syscon-poweroff {
+			compatible = "syscon-poweroff";
+			regmap = <&pmu_system_controller>;
+			offset = <0x330C>; /* PS_HOLD_CONTROL */
+			mask = <0x5200>; /* reset value */
+		};
+
+		reboot: syscon-reboot {
+			compatible = "syscon-reboot";
+			regmap = <&pmu_system_controller>;
+			offset = <0x0400>; /* SWRESET */
+			mask = <0x1>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index 18e3deffbf48..d9c221517935 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -19,6 +19,7 @@
 
 #include "skeleton.dtsi"
 #include "exynos4-cpu-thermal.dtsi"
+#include "exynos-syscon-restart.dtsi"
 #include <dt-bindings/clock/exynos3250.h>
 
 / {
@@ -152,20 +153,6 @@
 			interrupt-parent = <&gic>;
 		};
 
-		poweroff: syscon-poweroff {
-			compatible = "syscon-poweroff";
-			regmap = <&pmu_system_controller>;
-			offset = <0x330C>; /* PS_HOLD_CONTROL */
-			mask = <0x5200>; /* Reset value */
-		};
-
-		reboot: syscon-reboot {
-			compatible = "syscon-reboot";
-			regmap = <&pmu_system_controller>;
-			offset = <0x0400>; /* SWRESET */
-			mask = <0x1>;
-		};
-
 		mipi_phy: video-phy@10020710 {
 			compatible = "samsung,s5pv210-mipi-video-phy";
 			#phy-cells = <1>;
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index ca621a92319e..5456094d2f45 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -22,6 +22,7 @@
 #include <dt-bindings/clock/exynos4.h>
 #include <dt-bindings/clock/exynos-audss-clk.h>
 #include "skeleton.dtsi"
+#include "exynos-syscon-restart.dtsi"
 
 / {
 	interrupt-parent = <&gic>;
@@ -163,20 +164,6 @@
 		interrupt-parent = <&gic>;
 	};
 
-	poweroff: syscon-poweroff {
-		compatible = "syscon-poweroff";
-		regmap = <&pmu_system_controller>;
-		offset = <0x330C>; /* PS_HOLD_CONTROL */
-		mask = <0x5200>; /* reset value */
-	};
-
-	reboot: syscon-reboot {
-		compatible = "syscon-reboot";
-		regmap = <&pmu_system_controller>;
-		offset = <0x0400>; /* SWRESET */
-		mask = <0x1>;
-	};
-
 	dsi_0: dsi@11C80000 {
 		compatible = "samsung,exynos4210-mipi-dsi";
 		reg = <0x11C80000 0x10000>;
diff --git a/arch/arm/boot/dts/exynos5.dtsi b/arch/arm/boot/dts/exynos5.dtsi
index b61d1f637510..92313cac035e 100644
--- a/arch/arm/boot/dts/exynos5.dtsi
+++ b/arch/arm/boot/dts/exynos5.dtsi
@@ -14,6 +14,7 @@
  */
 
 #include "skeleton.dtsi"
+#include "exynos-syscon-restart.dtsi"
 
 / {
 	interrupt-parent = <&gic>;
@@ -93,20 +94,6 @@
 		status = "disabled";
 	};
 
-	poweroff: syscon-poweroff {
-		compatible = "syscon-poweroff";
-		regmap = <&pmu_system_controller>;
-		offset = <0x330C>; /* PS_HOLD_CONTROL */
-		mask = <0x5200>; /* reset value */
-	};
-
-	reboot: syscon-reboot {
-		compatible = "syscon-reboot";
-		regmap = <&pmu_system_controller>;
-		offset = <0x0400>; /* SWRESET */
-		mask = <0x1>;
-	};
-
 	fimd: fimd@14400000 {
 		compatible = "samsung,exynos5250-fimd";
 		interrupt-parent = <&combiner>;
diff --git a/arch/arm/boot/dts/exynos5410.dtsi b/arch/arm/boot/dts/exynos5410.dtsi
index f3490f567344..fa558674ac76 100644
--- a/arch/arm/boot/dts/exynos5410.dtsi
+++ b/arch/arm/boot/dts/exynos5410.dtsi
@@ -14,6 +14,7 @@
  */
 
 #include "skeleton.dtsi"
+#include "exynos-syscon-restart.dtsi"
 #include <dt-bindings/clock/exynos5410.h>
 
 / {
@@ -117,20 +118,6 @@
 			reg = <0x10040000 0x5000>;
 		};
 
-		poweroff: syscon-poweroff {
-			compatible = "syscon-poweroff";
-			regmap = <&pmu_system_controller>;
-			offset = <0x330C>; /* PS_HOLD_CONTROL */
-			mask = <0x5200>; /* reset value */
-		};
-
-		reboot: syscon-reboot {
-			compatible = "syscon-reboot";
-			regmap = <&pmu_system_controller>;
-			offset = <0x0400>; /* SWRESET */
-			mask = <0x1>;
-		};
-
 		mct: mct@101C0000 {
 			compatible = "samsung,exynos4210-mct";
 			reg = <0x101C0000 0xB00>;
diff --git a/arch/arm/boot/dts/exynos5420-cpus.dtsi b/arch/arm/boot/dts/exynos5420-cpus.dtsi
index 261d25173f61..5c052d7ff554 100644
--- a/arch/arm/boot/dts/exynos5420-cpus.dtsi
+++ b/arch/arm/boot/dts/exynos5420-cpus.dtsi
@@ -33,6 +33,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu1: cpu@1 {
@@ -42,6 +45,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu2: cpu@2 {
@@ -51,6 +57,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu3: cpu@3 {
@@ -60,6 +69,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu4: cpu@100 {
@@ -70,6 +82,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <7>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu5: cpu@101 {
@@ -79,6 +94,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <7>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu6: cpu@102 {
@@ -88,6 +106,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <7>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu7: cpu@103 {
@@ -97,6 +118,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <7>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 	};
 };
diff --git a/arch/arm/boot/dts/exynos5422-cpu-thermal.dtsi b/arch/arm/boot/dts/exynos5422-cpu-thermal.dtsi
index 2b289d7c0d13..3e4c4ad96d63 100644
--- a/arch/arm/boot/dts/exynos5422-cpu-thermal.dtsi
+++ b/arch/arm/boot/dts/exynos5422-cpu-thermal.dtsi
@@ -16,7 +16,7 @@
 	thermal-zones {
 		cpu0_thermal: cpu0-thermal {
 			thermal-sensors = <&tmu_cpu0 0>;
-			polling-delay-passive = <0>;
+			polling-delay-passive = <250>;
 			polling-delay = <0>;
 			trips {
 				cpu_alert0: cpu-alert-0 {
@@ -39,6 +39,23 @@
 					hysteresis = <0>; /* millicelsius */
 					type = "critical";
 				};
+				/*
+				 * Exyunos542x support only 4 trip-points
+				 * so for these polling mode is required.
+				 * Start polling at temperature level of last
+				 * interrupt-driven trip: cpu_alert2
+				 */
+				cpu_alert3: cpu-alert-3 {
+					temperature = <70000>; /* millicelsius */
+					hysteresis = <10000>; /* millicelsius */
+					type = "passive";
+				};
+				cpu_alert4: cpu-alert-4 {
+					temperature = <85000>; /* millicelsius */
+					hysteresis = <10000>; /* millicelsius */
+					type = "passive";
+				};
+
 			};
 			cooling-maps {
 				map0 {
@@ -53,6 +70,33 @@
 				     trip = <&cpu_alert2>;
 				     cooling-device = <&fan0 2 3>;
 				};
+				/*
+				 * When reaching cpu_alert3, reduce CPU
+				 * by 2 steps. On Exynos5422/5800 that would
+				 * be: 1500 MHz and 1100 MHz.
+				 */
+				map3 {
+				     trip = <&cpu_alert3>;
+				     cooling-device = <&cpu0 0 2>;
+				};
+				map4 {
+				     trip = <&cpu_alert3>;
+				     cooling-device = <&cpu4 0 2>;
+				};
+
+				/*
+				 * When reaching cpu_alert4, reduce CPU
+				 * further, down to 600 MHz (11 steps for big,
+				 * 7 steps for LITTLE).
+				 */
+				map5 {
+				     trip = <&cpu_alert4>;
+				     cooling-device = <&cpu0 3 7>;
+				};
+				map6 {
+				     trip = <&cpu_alert4>;
+				     cooling-device = <&cpu4 3 11>;
+				};
 			};
 		};
 	};
diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi
index 9b46b9fbac4e..bf3c6f1ec4ee 100644
--- a/arch/arm/boot/dts/exynos5422-cpus.dtsi
+++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi
@@ -32,6 +32,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu1: cpu@101 {
@@ -41,6 +44,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu2: cpu@102 {
@@ -50,6 +56,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu3: cpu@103 {
@@ -59,6 +68,9 @@
 			clock-frequency = <1000000000>;
 			cci-control-port = <&cci_control0>;
 			operating-points-v2 = <&cluster_a7_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <11>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu4: cpu@0 {
@@ -69,6 +81,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <15>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu5: cpu@1 {
@@ -78,6 +93,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <15>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu6: cpu@2 {
@@ -87,6 +105,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <15>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 
 		cpu7: cpu@3 {
@@ -96,6 +117,9 @@
 			clock-frequency = <1800000000>;
 			cci-control-port = <&cci_control1>;
 			operating-points-v2 = <&cluster_a15_opp_table>;
+			cooling-min-level = <0>;
+			cooling-max-level = <15>;
+			#cooling-cells = <2>; /* min followed by max */
 		};
 	};
 };