This adds optional properties of Mediatek thermal controller which are required by SVS engine integrated with Mediatek thermal controller. Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@xxxxxxxxxx> --- .../bindings/thermal/mediatek-thermal.txt | 23 ++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt index 81f9a51..acaacaa 100644 --- a/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt +++ b/Documentation/devicetree/bindings/thermal/mediatek-thermal.txt @@ -7,6 +7,11 @@ 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. +There is another hardware engine, SVS (Smart Voltage Scaling) which shares the +same block of banked registers with Mediatek thermal controller. Hence the +driver of SVS is integrated with the driver of Mediatek thermal controller. The +properties required by SVS engine are optional for Mediatek thermal controller. + Required properties: - compatible: "mediatek,mt8173-thermal" - reg: Address range of the thermal controller @@ -21,9 +26,15 @@ Required properties: - #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" +- clocks, clock-names: Clocks that are optional for the thermal controller. + Specify to enable SVS engine. + "svs_pll": The PLL clock should be switched to during + initialization stage of SVS engine. + "svs_mux": The MUX clock controls the clock input of SVS engine. +- nvmem-cells: A list of phandles to the calibration data provided by a nvmem + device. If unspecified default values shall be used. The SVS + engine will be disabled if no SVS calibration data is specified. +- nvmem-cell-names: Should be "calibration-data" and "svs-calibration-data" Example: @@ -33,11 +44,11 @@ Example: 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"; + 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"; + nvmem-cells = <&thermal_calibration_data>, <&svs-calibration>; + nvmem-cell-names = "calibration-data", "svs-calibration-data"; }; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
