[PATCH V2 6/6] Thermal: Add ST-Ericsson DB8500 thermal properties and platform data.
From: hongbo.zhang
Date: Wed Oct 24 2012 - 07:59:32 EST
From: "hongbo.zhang" <hongbo.zhang@xxxxxxxxxx>
This patch adds device tree properties for ST-Ericsson DB8500 thermal driver,
also adds the platform data to support the old fashion.
Signed-off-by: hongbo.zhang <hongbo.zhang@xxxxxxxxxx>
---
.../devicetree/bindings/thermal/db8500-thermal.txt | 40 ++++++++++++++
arch/arm/boot/dts/dbx5x0.dtsi | 14 +++++
arch/arm/boot/dts/snowball.dts | 31 +++++++++++
arch/arm/mach-ux500/board-mop500.c | 64 ++++++++++++++++++++++
4 files changed, 149 insertions(+)
create mode 100644 Documentation/devicetree/bindings/thermal/db8500-thermal.txt
diff --git a/Documentation/devicetree/bindings/thermal/db8500-thermal.txt b/Documentation/devicetree/bindings/thermal/db8500-thermal.txt
new file mode 100644
index 0000000..80d53e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/db8500-thermal.txt
@@ -0,0 +1,40 @@
+* ST-Ericsson DB8500 Thermal
+
+** Thermal node properties:
+
+- compatible : "stericsson,db8500-thermal";
+- reg : address range of the thermal sensor registers;
+- interrupts : interrupts generated form PRCMU;
+- interrupt-names : "IRQ_HOTMON_LOW" and "IRQ_HOTMON_HIGH";
+- num-trips : number of total trip points;
+- tripN-temp : temperature of trip point N;
+- tripN-type : type of trip point N, should be one of "active" "passive" "hot" "critical";
+- tripN-cdev-num : number of the cooling devices which can be bound to trip point N;
+- tripN-cdev-nameM : name of the No. M cooling device of trip point N;
+
+Usually the num-trips and tripN-*** are seperated in board related dts files.
+
+Example:
+thermal@801573c0 {
+ compatible = "stericsson,db8500-thermal";
+ reg = <0x801573c0 0x40>;
+ interrupts = <21 0x4>, <22 0x4>;
+ interrupt-names = "IRQ_HOTMON_LOW", "IRQ_HOTMON_HIGH";
+
+ num-trips = <3>;
+
+ trip0-temp = <70000>;
+ trip0-type = "active";
+ trip0-cdev-num = <1>;
+ trip0-cdev-name0 = "thermal-cpufreq-0";
+
+ trip1-temp = <75000>;
+ trip1-type = "active";
+ trip1-cdev-num = <2>;
+ trip1-cdev-name0 = "thermal-cpufreq-0";
+ trip1-cdev-name1 = "thermal-fan";
+
+ trip2-temp = <85000>;
+ trip2-type = "critical";
+ trip2-cdev-num = <0>;
+}
diff --git a/arch/arm/boot/dts/dbx5x0.dtsi b/arch/arm/boot/dts/dbx5x0.dtsi
index 748ba7a..949edc2 100644
--- a/arch/arm/boot/dts/dbx5x0.dtsi
+++ b/arch/arm/boot/dts/dbx5x0.dtsi
@@ -203,6 +203,14 @@
reg = <0x80157450 0xC>;
};
+ thermal@801573c0 {
+ compatible = "stericsson,db8500-thermal";
+ reg = <0x801573c0 0x40>;
+ interrupts = <21 0x4>, <22 0x4>;
+ interrupt-names = "IRQ_HOTMON_LOW", "IRQ_HOTMON_HIGH";
+ status = "disabled";
+ };
+
db8500-prcmu-regulators {
compatible = "stericsson,db8500-prcmu-regulator";
@@ -645,5 +653,11 @@
ranges = <0 0x50000000 0x4000000>;
status = "disabled";
};
+
+ cpufreq-cooling {
+ compatible = "stericsson,db8500-cpufreq-cooling";
+ status = "disabled";
+ };
+
};
};
diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts
index 702c0ba..c6f85f0 100644
--- a/arch/arm/boot/dts/snowball.dts
+++ b/arch/arm/boot/dts/snowball.dts
@@ -99,6 +99,33 @@
status = "okay";
};
+ prcmu@80157000 {
+ thermal@801573c0 {
+ num-trips = <4>;
+
+ trip0-temp = <70000>;
+ trip0-type = "active";
+ trip0-cdev-num = <1>;
+ trip0-cdev-name0 = "thermal-cpufreq-0";
+
+ trip1-temp = <75000>;
+ trip1-type = "active";
+ trip1-cdev-num = <1>;
+ trip1-cdev-name0 = "thermal-cpufreq-0";
+
+ trip2-temp = <80000>;
+ trip2-type = "active";
+ trip2-cdev-num = <1>;
+ trip2-cdev-name0 = "thermal-cpufreq-0";
+
+ trip3-temp = <85000>;
+ trip3-type = "critical";
+ trip3-cdev-num = <0>;
+
+ status = "okay";
+ };
+ };
+
external-bus@50000000 {
status = "okay";
@@ -183,5 +210,9 @@
reg = <0x33>;
};
};
+
+ cpufreq-cooling {
+ status = "okay";
+ };
};
};
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 416d436..b03216b 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -16,6 +16,7 @@
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/platform_data/i2c-nomadik.h>
+#include <linux/platform_data/db8500_thermal.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl022.h>
@@ -229,6 +230,67 @@ static struct ab8500_platform_data ab8500_platdata = {
};
/*
+ * Thermal Sensor
+ */
+
+static struct resource db8500_thsens_resources[] = {
+ {
+ .name = "IRQ_HOTMON_LOW",
+ .start = IRQ_PRCMU_HOTMON_LOW,
+ .end = IRQ_PRCMU_HOTMON_LOW,
+ .flags = IORESOURCE_IRQ,
+ },
+ {
+ .name = "IRQ_HOTMON_HIGH",
+ .start = IRQ_PRCMU_HOTMON_HIGH,
+ .end = IRQ_PRCMU_HOTMON_HIGH,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct db8500_thsens_platform_data db8500_thsens_data = {
+ .trip_points[0] = {
+ .temp = 70000,
+ .type = THERMAL_TRIP_ACTIVE,
+ .cdev_name = {
+ [0] = "thermal-cpufreq-0",
+ },
+ },
+ .trip_points[1] = {
+ .temp = 75000,
+ .type = THERMAL_TRIP_ACTIVE,
+ .cdev_name = {
+ [0] = "thermal-cpufreq-0",
+ },
+ },
+ .trip_points[2] = {
+ .temp = 80000,
+ .type = THERMAL_TRIP_ACTIVE,
+ .cdev_name = {
+ [0] = "thermal-cpufreq-0",
+ },
+ },
+ .trip_points[3] = {
+ .temp = 85000,
+ .type = THERMAL_TRIP_CRITICAL,
+ },
+ .num_trips = 4,
+};
+
+static struct platform_device u8500_thsens_device = {
+ .name = "db8500-thermal",
+ .resource = db8500_thsens_resources,
+ .num_resources = ARRAY_SIZE(db8500_thsens_resources),
+ .dev = {
+ .platform_data = &db8500_thsens_data,
+ },
+};
+
+static struct platform_device u8500_cpufreq_cooling_device = {
+ .name = "db8500-cpufreq-cooling",
+};
+
+/*
* TPS61052
*/
@@ -583,6 +645,8 @@ static struct platform_device *snowball_platform_devs[] __initdata = {
&snowball_key_dev,
&snowball_sbnet_dev,
&snowball_gpio_en_3v3_regulator_dev,
+ &u8500_thsens_device,
+ &u8500_cpufreq_cooling_device,
};
static void __init mop500_init_machine(void)
--
1.7.11.3
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