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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-11 14:26:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-11 14:26:21 -0700
commitc31c24b8251fd44962a9b0bf82c770653bf07f6e (patch)
tree6ada195fecaa54a37c11aa8da11b8ee327f00938 /Documentation
parent7f33e7241d3dbad3c0563fd1fc79fc9380b5c351 (diff)
parent63745aa72ed16154b82a0c9ed22a88001d6ea0fa (diff)
downloadlinux-c31c24b8251fd44962a9b0bf82c770653bf07f6e.tar.bz2
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management update from Zhang Rui: "Specifics: - fix a bug in Exynos thermal driver, which overwrites the hardware trip point threshold when updating software trigger levels and results in emergency shutdown. From: Tushar Behera. - add thermal sensor support for Armada 375 and 38x SoCs. From Ezequiel Garcia. - add TMU (Thermal Management Unit) support for Exynos5260 and Exynos5420 SoCs. From Naveen Krishna Chatradhi. - add support for the additional digital temperature sensors in the Intel SoCs like Bay Trail. From: Srinivas Pandruvada. - a couple of cleanups and small fixes from Jingoo Han, Bartlomiej Zolnierkiewicz, Geert Uytterhoeven, Jacob Pan, Paul Walmsley and Lan,Tianyu" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (21 commits) thermal: spear: remove unnecessary OOM messages thermal: exynos: remove unnecessary OOM messages thermal: rcar: remove unnecessary OOM messages thermal: armada: Support Armada 380 SoC thermal: armada: Support Armada 375 SoC thermal: armada: Allow to specify an 'inverted readout' sensor thermal: armada: Pass the platform_device to init_sensor() thermal: armada: Add generic infrastructure to handle the sensor thermal: armada: Add infrastructure to support generic formulas thermal: armada: Rename armada_thermal_ops struct thermal/intel_powerclamp: add newer cpu ids thermal: rcar: Use pm_runtime_put() i.s.o. pm_runtime_put_sync() thermal: samsung: Only update available threshold limits Thermal/int3403: Fix thermal hysteresis unit conversion thermal: Intel SoC DTS thermal thermal: samsung: Add TMU support for Exynos5260 SoCs thermal: samsung: Add TMU support for Exynos5420 SoCs thermal: samsung: change base_common to more meaningful base_second thermal: samsung: replace inten_ bit fields with intclr_ thermal: offer Samsung thermal support only when ARCH_EXYNOS is defined ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/thermal/armada-thermal.txt12
-rw-r--r--Documentation/devicetree/bindings/thermal/exynos-thermal.txt50
2 files changed, 58 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/thermal/armada-thermal.txt b/Documentation/devicetree/bindings/thermal/armada-thermal.txt
index fff93d5f92de..4cf024929a3f 100644
--- a/Documentation/devicetree/bindings/thermal/armada-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/armada-thermal.txt
@@ -1,11 +1,21 @@
-* Marvell Armada 370/XP thermal management
+* Marvell Armada 370/375/380/XP thermal management
Required properties:
- compatible: Should be set to one of the following:
marvell,armada370-thermal
+ marvell,armada375-thermal
+ marvell,armada375-z1-thermal
+ marvell,armada380-thermal
marvell,armadaxp-thermal
+ Note: As the name suggests, "marvell,armada375-z1-thermal"
+ applies for the SoC Z1 stepping only. On such stepping
+ some quirks need to be done and the register offset differs
+ from the one in the A0 stepping.
+ The operating system may auto-detect the SoC stepping and
+ update the compatible and register offsets at runtime.
+
- reg: Device's register space.
Two entries are expected, see the examples below.
The first one is required for the sensor register;
diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
index 284f5300fd8b..c94909215c07 100644
--- a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
@@ -6,16 +6,35 @@
"samsung,exynos4412-tmu"
"samsung,exynos4210-tmu"
"samsung,exynos5250-tmu"
+ "samsung,exynos5260-tmu"
+ "samsung,exynos5420-tmu" for TMU channel 0, 1 on Exynos5420
+ "samsung,exynos5420-tmu-ext-triminfo" for TMU channels 2, 3 and 4
+ Exynos5420 (Must pass triminfo base and triminfo clock)
"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.
+ belongs to register set of TMU instance and second set belongs to
+ registers shared with the TMU instance.
+
+ NOTE: On Exynos5420, the TRIMINFO register is misplaced for TMU
+ channels 2, 3 and 4
+ Use "samsung,exynos5420-tmu-ext-triminfo" in cases, there is a misplaced
+ register, also provide clock to access that base.
+
+ TRIMINFO at 0x1006c000 contains data for TMU channel 3
+ TRIMINFO at 0x100a0000 contains data for TMU channel 4
+ TRIMINFO at 0x10068000 contains data for TMU channel 2
+
- interrupts : Should contain interrupt for thermal system
-- clocks : The main clock for TMU device
+- clocks : The main clocks for TMU device
+ -- 1. operational clock for TMU channel
+ -- 2. optional clock to access the shared registers of TMU channel
- clock-names : Thermal system clock name
+ -- "tmu_apbif" operational clock for current TMU channel
+ -- "tmu_triminfo_apbif" clock to access the shared triminfo register
+ for current TMU channel
- 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.
@@ -43,6 +62,31 @@ Example 2):
clock-names = "tmu_apbif";
};
+Example 3): (In case of Exynos5420 "with misplaced TRIMINFO register")
+ tmu_cpu2: tmu@10068000 {
+ compatible = "samsung,exynos5420-tmu-ext-triminfo";
+ reg = <0x10068000 0x100>, <0x1006c000 0x4>;
+ interrupts = <0 184 0>;
+ clocks = <&clock 318>, <&clock 318>;
+ clock-names = "tmu_apbif", "tmu_triminfo_apbif";
+ };
+
+ tmu_cpu3: tmu@1006c000 {
+ compatible = "samsung,exynos5420-tmu-ext-triminfo";
+ reg = <0x1006c000 0x100>, <0x100a0000 0x4>;
+ interrupts = <0 185 0>;
+ clocks = <&clock 318>, <&clock 319>;
+ clock-names = "tmu_apbif", "tmu_triminfo_apbif";
+ };
+
+ tmu_gpu: tmu@100a0000 {
+ compatible = "samsung,exynos5420-tmu-ext-triminfo";
+ reg = <0x100a0000 0x100>, <0x10068000 0x4>;
+ interrupts = <0 215 0>;
+ clocks = <&clock 319>, <&clock 318>;
+ clock-names = "tmu_apbif", "tmu_triminfo_apbif";
+ };
+
Note: For multi-instance tmu each instance should have an alias correctly
numbered in "aliases" node.