On 19/09/2024 05:05, Rob Herring wrote:
On Wed, Sep 18, 2024 at 10:32:12AM +0000, Chanh Nguyen wrote:
Add device tree binding and example for adt7462 device.
Signed-off-by: Chanh Nguyen <chanh@xxxxxxxxxxxxxxxxxxxxxx>
---
.../bindings/hwmon/onnn,adt7462.yaml | 51 +++++++++++++++++++
1 file changed, 51 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/onnn,adt7462.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/onnn,adt7462.yaml b/Documentation/devicetree/bindings/hwmon/onnn,adt7462.yaml
new file mode 100644
index 000000000000..4a980cca419a
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/onnn,adt7462.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/onnn,adt7462.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ON Semiconductor ADT7462 Temperature, Voltage Monitor and Fan Controller
+
+maintainers:
+ - Chanh Nguyen <chanh@xxxxxxxxxxxxxxxxxxxxxx>
+
+description: |
+ The ADT7462 has temperature monitors, voltage monitors and multiple PWN Fan
+ controllers.
+
+ The ADT7462 supports monitoring and controlling up to four PWM Fan Drive
+ Outputs and eight TACH Inputs Measures. The ADT7462 supports reading a single
+ on chip temperature sensor and three remote temperature sensors. There are up
+ to 13 voltage monitoring inputs, ranging from 12V to 0.9V.
+
+ Datasheets:
+ https://www.onsemi.com/pub/Collateral/ADT7462-D.PDF
+
+properties:
+ compatible:
+ const: onnn,adt7462
+
+ reg:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
How would this work? 'resets' generally is used for on-chip devices and
a reset controller. That doesn't exist at the board level. A standalone
device typically uses a GPIO lines if there's a s/w controlled reset.
That would be the 'reset-gpios' property.
Thank Rob for your comments! The ADT7462 includes an active low reset
pin (Pin #14).
I'll change 'resets' into the 'reset-gpios' property.
The example in the binding will be
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
hwmon@5c {
compatible = "onnn,adt7462";
reg = <0x5c>;
reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
};
};
Rob
