[PATCH 2/8] dt-bindings: leds: register-bit-led: Use 'reg' instead of 'offset'

[Rob Herring]

'reg' is the standard property for defining register banks/addresses. Add
it to use for the register address and deprecate 'offset'. This also
allows for using standard node names with unit-addresses. However, since
it is quite possible to have multiple nodes at the same register
address, allow for the unit-address to optionally have the bit
offset. The unit-address format is '@<reg address>[,<bit offset>]'. This
matches the format recently added for nvmem binding which has the same
issue.

Cc: Pavel Machek <pavel@xxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: linux-leds@xxxxxxxxxxxxxxx
Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
---
 .../bindings/leds/register-bit-led.yaml       | 25 ++++++++++++++++---
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/leds/register-bit-led.yaml b/Documentation/devicetree/bindings/leds/register-bit-led.yaml
index 4a5bb0aa5f27..404ac75e1dc4 100644
--- a/Documentation/devicetree/bindings/leds/register-bit-led.yaml
+++ b/Documentation/devicetree/bindings/leds/register-bit-led.yaml
@@ -20,9 +20,19 @@ allOf:
   - $ref: /schemas/leds/common.yaml#
 
 properties:
+  $nodename:
+    description:
+      The unit-address is in the form of @<reg addr>,<bit offset>
+    pattern: '^led@[0-9a-f]+,[0-9a-f]{1,2}$'
+
   compatible:
     const: register-bit-led
 
+  reg:
+    description:
+      The register address and size
+    maxItems: 1
+
   mask:
     description:
       bit mask for the bit controlling this LED in the register
@@ -37,11 +47,12 @@ properties:
     description:
       register offset to the register controlling this LED
     $ref: /schemas/types.yaml#/definitions/uint32
+    deprecated: true
 
 required:
   - compatible
   - mask
-  - offset
+  - reg
 
 unevaluatedProperties: false
 
@@ -51,25 +62,31 @@ examples:
     syscon@10000000 {
         compatible = "arm,realview-pb1176-syscon", "syscon";
         reg = <0x10000000 0x1000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0x0 0x10000000 0x1000>;
 
-        led@8.0 {
+        led@8,0 {
             compatible = "register-bit-led";
+            reg = <0x08 0x04>;
             offset = <0x08>;
             mask = <0x01>;
             label = "versatile:0";
             linux,default-trigger = "heartbeat";
             default-state = "on";
         };
-        led@8.1 {
+        led@8,1 {
             compatible = "register-bit-led";
+            reg = <0x08 0x04>;
             offset = <0x08>;
             mask = <0x02>;
             label = "versatile:1";
             linux,default-trigger = "mmc0";
             default-state = "off";
         };
-        led@8.2 {
+        led@8,2 {
             compatible = "register-bit-led";
+            reg = <0x08 0x04>;
             offset = <0x08>;
             mask = <0x04>;
             label = "versatile:2";
-- 
2.30.2