[PATCH v4 3/3] dt-bindings: sbrmi: Add SB-RMI hwmon driver bindings

Naveen Krishna Chatradhi
2021-07-26T13:36:45Z

From: Akshay Gupta <Akshay.Gupta@amd.com>

- Document device tree bindings for AMD SB-RMI emulated service.

Signed-off-by: Akshay Gupta <Akshay.Gupta@amd.com>
Signed-off-by: Naveen Krishna Chatradhi <nchatrad@amd.com>
---
Changes since v3:
None

.../devicetree/bindings/hwmon/amd,sbrmi.yaml | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/amd,sbrmi.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/amd,sbrmi.yaml b/Documentation/devicetree/bindings/hwmon/amd,sbrmi.yaml
new file mode 100644
index 000000000000..7598b083979c
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/amd,sbrmi.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/amd,sbrmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: >
+ Sideband Remote Management Interface (SB-RMI) compliant
+ AMD SoC power device.
+
+maintainers:
+ - Akshay Gupta <Akshay.Gupta@amd.com>
+
+description: |
+ SB Remote Management Interface (SB-RMI) is an SMBus compatible
+ interface that reports AMD SoC's Power (normalized Power) using,
+ Mailbox Service Request and resembles a typical 8-pin remote power
+ sensor's I2C interface to BMC. The power attributes in hwmon
+ reports power in microwatts.
+
+properties:
+ compatible:
+ enum:
+ - amd,sbrmi
+
+ reg:
+ maxItems: 1
+ description: |
+ I2C bus address of the device as specified in Section SBI SMBus Address
+ of the SoC register reference. The SB-RMI address is normally 78h for
+ socket 0 and 70h for socket 1, but it could vary based on hardware
+ address select pins.
+ \[open source SoC register reference\]
+ https://www.amd.com/en/support/tech-docs?keyword=55898
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sbrmi@3c {
+ compatible = "amd,sbrmi";
+ reg = <0x3c>;
+ };
+ };
+...
--
2.17.1