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authorLinus Torvalds2013-09-12 07:42:59 -0700
committerLinus Torvalds2013-09-12 07:42:59 -0700
commitb9b42eeb88d36cc7400925302f1587aaaa348905 (patch)
treef5260ad8013adeca9f86c85c096099844238c725 /Documentation/devicetree
parent7b7a2f0a31c6c1ff53a3c87c0bca4f8d01471391 (diff)
parent50e66c7ed8a1cd7e933628f9f5cf2617394adf5a (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui: "We have a lot of SOC changes and a few thermal core fixes this time. The biggest change is about exynos thermal driver restructure. The patch set adds TMU (Thermal management Unit) driver support for exynos5440 platform. There are 3 instances of the TMU controllers so necessary cleanup/re-structure is done to handle multiple thermal zone. The next biggest change is the introduction of the imx thermal driver. It adds the imx thermal support using Temperature Monitor (TEMPMON) block found on some Freescale i.MX SoCs. The driver uses syscon regmap interface to access TEMPMON control registers and calibration data, and supports cpufreq as the cooling device. Highlights: - restructure exynos thermal driver. - introduce new imx thermal driver. - fix a bug in thermal core, which powers on the fans unexpectedly after resume from suspend" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (46 commits) drivers: thermal: add check when unregistering cpu cooling thermal: thermal_core: allow binding with limits on bind_params drivers: thermal: make usage of CONFIG_THERMAL_HWMON optional drivers: thermal: parent virtual hwmon with thermal zone thermal: hwmon: move hwmon support to single file thermal: exynos: Clean up non-DT remnants thermal: exynos: Fix potential NULL pointer dereference thermal: exynos: Fix typos in Kconfig thermal: ti-soc-thermal: Ensure to compute thermal trend thermal: ti-soc-thermal: Set the bandgap mask counter delay value thermal: ti-soc-thermal: Initialize counter_delay field for TI DRA752 sensors thermal: step_wise: return instance->target by default thermal: step_wise: cdev only needs update on a new target state Thermal/cpu_cooling: Return directly for the cpu out of allowed_cpus in the cpufreq_thermal_notifier() thermal: exynos_tmu: fix wrong error check for mapped memory thermal: imx: implement thermal alarm interrupt handling thermal: imx: dynamic passive and SoC specific critical trip points Documentation: thermal: Explain the exynos thermal driver model ARM: dts: thermal: exynos: Add documentation for Exynos SoC thermal bindings thermal: exynos: Support for TMU regulator defined at device tree ...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/thermal/exynos-thermal.txt55
-rw-r--r--Documentation/devicetree/bindings/thermal/imx-thermal.txt17
2 files changed, 72 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
new file mode 100644
index 000000000000..284f5300fd8b
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
@@ -0,0 +1,55 @@
+* Exynos Thermal Management Unit (TMU)
+
+** Required properties:
+
+- compatible : One of the following:
+ "samsung,exynos4412-tmu"
+ "samsung,exynos4210-tmu"
+ "samsung,exynos5250-tmu"
+ "samsung,exynos5440-tmu"
+- interrupt-parent : The phandle for the interrupt controller
+- reg : Address range of the thermal registers. For soc's which has multiple
+ instances of TMU and some registers are shared across all TMU's like
+ interrupt related then 2 set of register has to supplied. First set
+ belongs to each instance of TMU and second set belongs to common TMU
+ registers.
+- interrupts : Should contain interrupt for thermal system
+- clocks : The main clock for TMU device
+- clock-names : Thermal system clock name
+- vtmu-supply: This entry is optional and provides the regulator node supplying
+ voltage to TMU. If needed this entry can be placed inside
+ board/platform specific dts file.
+
+Example 1):
+
+ tmu@100C0000 {
+ compatible = "samsung,exynos4412-tmu";
+ interrupt-parent = <&combiner>;
+ reg = <0x100C0000 0x100>;
+ interrupts = <2 4>;
+ clocks = <&clock 383>;
+ clock-names = "tmu_apbif";
+ status = "disabled";
+ vtmu-supply = <&tmu_regulator_node>;
+ };
+
+Example 2):
+
+ tmuctrl_0: tmuctrl@160118 {
+ compatible = "samsung,exynos5440-tmu";
+ reg = <0x160118 0x230>, <0x160368 0x10>;
+ interrupts = <0 58 0>;
+ clocks = <&clock 21>;
+ clock-names = "tmu_apbif";
+ };
+
+Note: For multi-instance tmu each instance should have an alias correctly
+numbered in "aliases" node.
+
+Example:
+
+aliases {
+ tmuctrl0 = &tmuctrl_0;
+ tmuctrl1 = &tmuctrl_1;
+ tmuctrl2 = &tmuctrl_2;
+};
diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
new file mode 100644
index 000000000000..541c25e49abf
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
@@ -0,0 +1,17 @@
+* Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
+
+Required properties:
+- compatible : "fsl,imx6q-thermal"
+- fsl,tempmon : phandle pointer to system controller that contains TEMPMON
+ control registers, e.g. ANATOP on imx6q.
+- fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON
+ calibration data, e.g. OCOTP on imx6q. The details about calibration data
+ can be found in SoC Reference Manual.
+
+Example:
+
+tempmon {
+ compatible = "fsl,imx6q-tempmon";
+ fsl,tempmon = <&anatop>;
+ fsl,tempmon-data = <&ocotp>;
+};