lkml.org 
[lkml]   [2012]   [Oct]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH V2 6/6] Thermal: Add ST-Ericsson DB8500 thermal properties and platform data.
    Date
    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 ++++++++++++++
    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


    \
     
     \ /
      Last update: 2012-10-24 14:41    [W:2.649 / U:0.492 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site