On 24 October 2012 17:28, hongbo.zhang hongbo.zhang@linaro.org wrote:
From: "hongbo.zhang" hongbo.zhang@linaro.com
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@linaro.com
.../devicetree/bindings/thermal/db8500-thermal.txt | 40 ++++++++++++++
It must be included in patch 5/6
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.
s/seperated/separated
+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,},{
I prefer }, {
.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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