arm/dt: msm-pm8941: Add thermal-node VADC_TM DT property
Add DT property qcom,thermal-node to the VADC_TM which
will be used to identify if the channel node should be
registered as part of the thermal sysfs. This allows
flexibility to have any channel order and support
multiple targets which have different channel defintion.
Change-Id: I42182d07d7fad91a66ebcead095ead525033b303
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
diff --git a/Documentation/devicetree/bindings/thermal/qpnp-adc-tm.txt b/Documentation/devicetree/bindings/thermal/qpnp-adc-tm.txt
index f1f4e94..3854598 100644
--- a/Documentation/devicetree/bindings/thermal/qpnp-adc-tm.txt
+++ b/Documentation/devicetree/bindings/thermal/qpnp-adc-tm.txt
@@ -20,6 +20,13 @@
- qcom,adc-bit-resolution : Bit resolution of the ADC.
- qcom,adc-vdd-reference : Voltage reference used by the ADC.
+Optional properties:
+- qcom,thermal-node : If present a thermal node is created and the channel is registered as
+ part of the thermal sysfs which allows clients to use the thermal framework
+ to set temperature thresholds and receive notification when the temperature
+ crosses a set threshold, read temperature and enable/set trip types supported
+ by the thermal framework.
+
Channel nodes
NOTE: Atleast one Channel node is required.
@@ -105,7 +112,7 @@
qcom,adc-bit-resolution = <15>;
qcom,adc-vdd-reference = <1800>;
- /* Channel Node */
+ /* Channel Node to be registered as part of thermal sysfs */
chan@b5 {
label = "pa_therm1";
reg = <0xb5>;
@@ -116,5 +123,19 @@
qcom,hw-settle-time = <0>;
qcom,fast-avg-setup = <0>;
qcom,btm-channel-number = <0x70>;
+ qcom,thermal-node;
};
+
+ /* Channel Node */
+ chan@6 {
+ label = "vbat_sns";
+ reg = <6>;
+ qcom,decimation = <0>;
+ qcom,pre-div-channel-scaling = <1>;
+ qcom,calibration-type = "absolute";
+ qcom,scale-function = <3>;
+ qcom,hw-settle-time = <0>;
+ qcom,fast-avg-setup = <0>;
+ qcom,btm-channel-number = <0x78>;
+ };
};
diff --git a/drivers/thermal/qpnp-adc-tm.c b/drivers/thermal/qpnp-adc-tm.c
index e84220f..cb0caad 100644
--- a/drivers/thermal/qpnp-adc-tm.c
+++ b/drivers/thermal/qpnp-adc-tm.c
@@ -1534,6 +1534,10 @@
adc_tm->sensor[sen_idx].vadc_channel_num =
adc_tm->adc->adc_channels[sen_idx].channel_num;
adc_tm->sensor[sen_idx].sensor_num = sen_idx;
+ pr_debug("btm_chan:%x, vadc_chan:%x\n", btm_channel_num,
+ adc_tm->adc->adc_channels[sen_idx].channel_num);
+ thermal_node = of_property_read_bool(child,
+ "qcom,thermal-node");
if (thermal_node) {
/* Register with the thermal zone */
pr_debug("thermal node%x\n", btm_channel_num);