This implements a mechanism to derive temperature values from an existing ADC IIO
channel, effectively creating a temperature IIO channel. This approach avoids adding
a new sensor and its associated conversion table, while providing IIO-based temperature
data for devices that may not utilize hwmon.
Signed-off-by: Svyatoslav Ryhel <clamor95@xxxxxxxxx>
---
.../devicetree/bindings/thermal/generic-adc-thermal.yaml | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/thermal/generic-adc-thermal.yaml b/Documentation/devicetree/bindings/thermal/generic-adc-thermal.yaml
index 12e6418dc24d..4bc2cff0593c 100644
--- a/Documentation/devicetree/bindings/thermal/generic-adc-thermal.yaml
+++ b/Documentation/devicetree/bindings/thermal/generic-adc-thermal.yaml
@@ -30,6 +30,9 @@ properties:
io-channel-names:
const: sensor-channel
+ '#io-channel-cells':
+ const: 1
+
temperature-lookup-table:
description: |
Lookup table to map the relation between ADC value and temperature.
@@ -60,6 +63,7 @@ examples:
#thermal-sensor-cells = <0>;
io-channels = <&ads1015 1>;
io-channel-names = "sensor-channel";
+ #io-channel-cells = <1>;
temperature-lookup-table = <
(-40000) 2578
(-39000) 2577
--
2.43.0
