linux-kernel - [PATCH v2 2/2] dt-bindings: hwmon: Add sample averaging property for ADM1275

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Date:   Thu, 24 Feb 2022 23:43:29 +0800
From:   Potin Lai <potin.lai@...ntatw.com>
To:     Guenter Roeck <linux@...ck-us.net>,
        Jean Delvare <jdelvare@...e.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Patrick Williams <patrick@...cx.xyz>, linux-hwmon@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Potin Lai <potin.lai@...ntatw.com>
Subject: [PATCH v2 2/2] dt-bindings: hwmon: Add sample averaging property for ADM1275

Add new properties for binding sample averaging in PMON_CONFIG register

- adi,volt-curr-sample-average
- adi,power-sample-average

Signed-off-by: Potin Lai <potin.lai@...ntatw.com>
---
 .../bindings/hwmon/adi,adm1275.yaml           | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml b/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml
index 223393d7cafd..325f6827648f 100644
--- a/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml
+++ b/Documentation/devicetree/bindings/hwmon/adi,adm1275.yaml
@@ -37,6 +37,48 @@ properties:
     description:
       Shunt resistor value in micro-Ohm.
 
+  adi,volt-curr-sample-average:
+    description: |
+      A value to configure VI_AVG in PMON_CONFIG register to indicate a
+      number of samples to be used to report voltage and currentvalues.
+      If set to 7, the 128 samples averaging would be used.
+
+    $ref: /schemas/types.yaml#/definitions/uint8
+    enum:
+      - 0 # 1 sample averaging
+      - 1 # 2 sample averaging
+      - 2 # 4 sample averaging
+      - 3 # 8 sample averaging
+      - 4 # 16 sample averaging
+      - 5 # 32 sample averaging
+      - 6 # 64 sample averaging
+      - 7 # 128 sample averaging
+    default: 0
+
+  adi,power-sample-average:
+    description: |
+      A value to configure PWR_AVG in PMON_CONFIG register to indicate a
+      number of samples to be used to report power values.
+      If set to 7, the 128 samples averaging would be used.
+
+      The chip supports power sample averaging:
+        "adi,adm1272"
+        "adi,adm1278"
+        "adi,adm1293"
+        "adi,adm1294"
+
+    $ref: /schemas/types.yaml#/definitions/uint8
+    enum:
+      - 0 # 1 sample averaging
+      - 1 # 2 sample averaging
+      - 2 # 4 sample averaging
+      - 3 # 8 sample averaging
+      - 4 # 16 sample averaging
+      - 5 # 32 sample averaging
+      - 6 # 64 sample averaging
+      - 7 # 128 sample averaging
+    default: 0
+
 required:
   - compatible
   - reg
@@ -53,5 +95,7 @@ examples:
             compatible = "adi,adm1272";
             reg = <0x10>;
             shunt-resistor-micro-ohms = <500>;
+            adi,volt-curr-sample-average = /bits/ 8 <0x07>;
+            adi,power-sample-average = /bits/ 8 <0x07>;
         };
     };
-- 
2.17.1