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author | Sascha Hauer <s.hauer@pengutronix.de> | 2015-11-30 12:42:31 +0100 |
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committer | Eduardo Valentin <edubezval@gmail.com> | 2016-02-18 07:19:12 -0800 |
commit | 025f272f9b0bffaf7b712b05b7f8fc7611e081fe (patch) | |
tree | b12aa95656903d217ff20d462a8a44ed5cecf29b /Documentation | |
parent | 2850713576e81e3b887cd92a9965fba0dd1717c0 (diff) | |
download | linux-stable-025f272f9b0bffaf7b712b05b7f8fc7611e081fe.tar.gz linux-stable-025f272f9b0bffaf7b712b05b7f8fc7611e081fe.tar.bz2 linux-stable-025f272f9b0bffaf7b712b05b7f8fc7611e081fe.zip |
dt-bindings: thermal: Add binding document for Mediatek thermal controller
This adds the device tree binding documentation for the mediatek thermal
controller found on Mediatek MT8173 and other SoCs.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/thermal/mediatek-thermal.txt | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt new file mode 100644 index 000000000000..81f9a512bc2a --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt @@ -0,0 +1,43 @@ +* Mediatek Thermal + +This describes the device tree binding for the Mediatek thermal controller +which measures the on-SoC temperatures. This device does not have its own ADC, +instead it directly controls the AUXADC via AHB bus accesses. For this reason +this device needs phandles to the AUXADC. Also it controls a mux in the +apmixedsys register space via AHB bus accesses, so a phandle to the APMIXEDSYS +is also needed. + +Required properties: +- compatible: "mediatek,mt8173-thermal" +- reg: Address range of the thermal controller +- interrupts: IRQ for the thermal controller +- clocks, clock-names: Clocks needed for the thermal controller. required + clocks are: + "therm": Main clock needed for register access + "auxadc": The AUXADC clock +- resets: Reference to the reset controller controlling the thermal controller. +- mediatek,auxadc: A phandle to the AUXADC which the thermal controller uses +- mediatek,apmixedsys: A phandle to the APMIXEDSYS controller. +- #thermal-sensor-cells : Should be 0. See ./thermal.txt for a description. + +Optional properties: +- nvmem-cells: A phandle to the calibration data provided by a nvmem device. If + unspecified default values shall be used. +- nvmem-cell-names: Should be "calibration-data" + +Example: + + thermal: thermal@1100b000 { + #thermal-sensor-cells = <1>; + compatible = "mediatek,mt8173-thermal"; + reg = <0 0x1100b000 0 0x1000>; + interrupts = <0 70 IRQ_TYPE_LEVEL_LOW>; + clocks = <&pericfg CLK_PERI_THERM>, <&pericfg CLK_PERI_AUXADC>; + clock-names = "therm", "auxadc"; + resets = <&pericfg MT8173_PERI_THERM_SW_RST>; + reset-names = "therm"; + mediatek,auxadc = <&auxadc>; + mediatek,apmixedsys = <&apmixedsys>; + nvmem-cells = <&thermal_calibration_data>; + nvmem-cell-names = "calibration-data"; + }; |