From: kongxinwei <kong.kongxin...@hisilicon.com>
This adds documentation of device tree bindings for the
thermal sensor controller of hi6220 SoC.
Signed-off-by: Leo Yan <leo....@linaro.org>
Signed-off-by: kongxinwei <kong.kongxin...@hisilicon.com>
---
.../bindings/thermal/hisilicon-thermal.txt | 45 ++++++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644
Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt
diff --git a/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt
b/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt
new file mode 100644
index 0000000..ceb6e2e
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/hisilicon-thermal.txt
@@ -0,0 +1,45 @@
+* Hisilicon Thermal
+
+This driver is for hi6220 SoC which contain 4 thermal sensor.
+
+ 1. sensor 0: local sensor;
+ 2. sensor 1: remote sensor for ACPU cluster 1;
+ 3. sensor 2: remote sensor for ACPU cluster 2;
+ 4. sensor 3: remote sensor for GPU.
+
+Every sensor use one child node to represent it, so thermal sensor include
+parent node and four child node. The parent node describe common feature and
+child node describe private feature for thermal sensor;
+
+** Required properties :
+
+- compatible: "hisilicon,tsensor".
+- reg: physical base address of thermal sensor and length of memory mapped
+ region.
+- interrupt: The interrupt number to the cpu. Defines the interrupt used
+ by SOCTHERM.
+- clock-names: Input clock name, should be 'thermal_clk'.
+- clocks: phandles for clock specified in "clock-names" property.
+- #thermal-sensor-cells: Should be 1. See ./thermal.txt for a description.
+
+** Required properties for child nodes :
+
+- hisilicon,tsensor-id: the index of thermal sensor and use it to distinguish
+ thermal sensor. For example: <0> stands for local sensor; <1> stands for
+ acpu1 sensor;
+
+Example :
+
+ tsensor: tsensor@0,f7030700 {
+ compatible = "hisilicon,tsensor";
+ reg = <0x0 0xf7030700 0x0 0x1000>;
+ interrupts = <0 7 0x4>;
+ clocks = <&clock_sys HI6220_TSENSOR_CLK>;
+ clock-names = "thermal_clk";
+ #thermal-sensor-cells = <1>;
+
+ local_sensor {
+ hisilicon,tsensor-id = <0>;
+ }
+ .......
+ }
--
1.9.1
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