On 8/7/23 18:31, Mark Tomlinson wrote:
The EMC181x range are I2C temperature sensors with a varying number of
sensors in each device. Each has one internal sensor, and one to four
external sensor diodes.
The default range is from 0°C to +127°C, but can be extended to -64°C to
+191°C.
Signed-off-by: Mark Tomlinson <mark.tomlinson@xxxxxxxxxxxxxxxxxxx>
---
.../bindings/hwmon/microchip,emc181x.yaml | 45 +++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/microchip,emc181x.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/microchip,emc181x.yaml b/Documentation/devicetree/bindings/hwmon/microchip,emc181x.yaml
new file mode 100644
index 000000000000..5967f98ad7ba
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/microchip,emc181x.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/microchip,emc181x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip EMC1812/EMC1813/EMC1814/EMC1815/EMC1833 temperature sensors
+
+maintainers:
+ - Mark Tomlinson <mark.tomlinson@xxxxxxxxxxxxxxxxxxx>
+
+properties:
+ compatible:
+ enum:
+ - microchip,emc1812
+ - microchip,emc1813
+ - microchip,emc1814
+ - microchip,emc1815
+ - microchip,emc1833
+
+ reg:
+ maxItems: 1
+
+ emc181x,extended-range:
+ description: Allow for reading of extended temperature range (-64-192C)
+
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
The chip has various other configuration options. I would have expected to see
at least beta compensation, ideality factor, resistance error correction,
and anti-parallel diode operation.
Yes, I understand you probably don't plan to implement those in the driver,
but the devicetree property description should at least try to be complete.
Guenter
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ temperature-sensor@7c {
+ compatible = "microchip,emc1812";
+ reg = <0x7c>;
+ };
+ };
