[PATCH 1/3] dt-bindings: power: cw2015: add cw2215, cw2217, and cw2218

[Chris Morgan <macroalpha82@gmail.com>]

From: Chris Morgan <macromorgan@hotmail.com>

Add bindings for the Cellwise cw2215/cw2217/cw2218 i2C interface
battery gauge. It is similar in function to the existing cw2015 but
with a different register layout. Each of the cw2215, cw2217 and cw2218
only really differ in the minor specs and the hardware ID they display
when queried. shunt-resistor-micro-ohms is a property in use for
multiple devices so not appending a vendor prefix to it.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
---
 .../bindings/power/supply/cw2015_battery.yaml | 42 +++++++++++++++----
 1 file changed, 35 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml b/Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml
index f7bde324153d..12d2d9a9cf6f 100644
--- a/Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml
+++ b/Documentation/devicetree/bindings/power/supply/cw2015_battery.yaml
@@ -14,12 +14,13 @@ description: |
   phandle in monitored-battery. If specified the driver uses the
   charge-full-design-microamp-hours property of the battery.
 
-allOf:
-  - $ref: power-supply.yaml#
-
 properties:
   compatible:
-    const: cellwise,cw2015
+    enum:
+      - cellwise,cw2015
+      - cellwise,cw2215
+      - cellwise,cw2217
+      - cellwise,cw2218
 
   reg:
     maxItems: 1
@@ -31,8 +32,6 @@ properties:
       it is to mail two batteries to a test facility of CellWise and receive
       back a test report with the binary blob.
     $ref: /schemas/types.yaml#/definitions/uint8-array
-    minItems: 64
-    maxItems: 64
 
   cellwise,monitor-interval-ms:
     description:
@@ -41,7 +40,14 @@ properties:
 
   power-supplies:
     minItems: 1
-    maxItems: 8 # Should be enough
+    maxItems: 8  # Should be enough
+
+  shunt-resistor-micro-ohms:
+    description: |
+      The value, in micro-ohms, of the shunt resistor used for sampling
+      the battery current.
+    minimum: 1000000
+    maximum: 50000000
 
   monitored-battery: true
 
@@ -49,6 +55,28 @@ required:
   - compatible
   - reg
 
+allOf:
+  - $ref: power-supply.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - cellwise,cw2015
+    then:
+      properties:
+        shunt-resistor-micro-ohms: false
+
+        cellwise,battery-profile:
+          minItems: 64
+          maxItems: 64
+
+    else:
+      properties:
+        cellwise,battery-profile:
+          minItems: 80
+          maxItems: 80
+
 additionalProperties: false
 
 examples:
-- 
2.53.0


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