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From:   Eliav Farber <farbere@amazon.com>
To:     <jdelvare@suse.com>, <linux@roeck-us.net>, <robh+dt@kernel.org>,
        <p.zabel@pengutronix.de>, <rtanwar@maxlinear.com>,
        <linux-hwmon@vger.kernel.org>, <devicetree@vger.kernel.org>,
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        <jonnyc@amazon.com>, <hanochu@amazon.com>, <ronenk@amazon.com>,
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Subject: [PATCH v3 08/19] dt-bindings: hwmon: (mr75203) add "moortec,vm-active-channels" property
Date:   Tue, 30 Aug 2022 19:22:01 +0000
Message-ID: <20220830192212.28570-9-farbere@amazon.com>
In-Reply-To: <20220830192212.28570-1-farbere@amazon.com>
References: <20220830192212.28570-1-farbere@amazon.com>
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Add optional "moortec,vm-active-channels" property to define the number
of active channels per VM.

This shall be useful to avoid exposing sysfs for reading inputs that are
not connected to any voltage source.

Signed-off-by: Eliav Farber <farbere@amazon.com>
---
V3 -> V2:
- Add "moortec" prefix to property name.
- Add explanation why this change is needed.

 .../devicetree/bindings/hwmon/moortec,mr75203.yaml    | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
index 2ec4b9da4b92..69cc6caceb2c 100644
--- a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
+++ b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
@@ -44,6 +44,16 @@ properties:
   "#thermal-sensor-cells":
     const: 1
 
+  moortec,vm-active-channels:
+    description:
+      moortec,vm-active-channels defines the number of channels per VM that are
+      actually used and are connected to some source.
+      Number of values in the array should be the number of VMs.
+      A value of 0 means that the entire VM sensor is nou used.
+    maximum: 16
+    default: 16
+    $ref: /schemas/types.yaml#definitions/uint8-array
+
 required:
   - compatible
   - reg
@@ -65,5 +75,6 @@ examples:
         intel,vm-map = [03 01 04 ff ff];
         clocks = <&osc0>;
         resets = <&rcu0 0x40 7>;
+        moortec,vm-active-channels = <0x10 0x05>;
         #thermal-sensor-cells = <1>;
     };
-- 
2.37.1