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Message-ID: <CAKohpom0EOAuahLQoNr1ODbTT-Trv3eE0-oBEmbbdbiKBJPCng@mail.gmail.com>
Date: Wed, 24 Oct 2012 20:17:10 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: "hongbo.zhang" <hongbo.zhang@...aro.org>
Cc: linaro-dev@...ts.linaro.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org, STEricsson_nomadik_linux@...t.st.com,
kernel@...oocommunity.org, linaro-kernel@...ts.linaro.org,
"hongbo.zhang" <hongbo.zhang@...aro.com>, patches@...aro.org
Subject: Re: [PATCH V2 6/6] Thermal: Add ST-Ericsson DB8500 thermal properties
and platform data.
On 24 October 2012 17:28, hongbo.zhang <hongbo.zhang@...aro.org> wrote:
> From: "hongbo.zhang" <hongbo.zhang@...aro.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@...aro.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@...573c0 {
> + 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@...573c0 {
> + 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@...57000 {
> + thermal@...573c0 {
> + 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@...00000 {
> 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
>
>
> _______________________________________________
> linaro-dev mailing list
> linaro-dev@...ts.linaro.org
> http://lists.linaro.org/mailman/listinfo/linaro-dev
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