[PATCH v4 1/9] dt-bindings: i2c: npcm: support NPCM845

[Tyrone Ting <warp5tw@gmail.com>]

From: Tyrone Ting <kfting@nuvoton.com>

Add compatible and nuvoton,sys-mgr description for NPCM i2c module.

Signed-off-by: Tyrone Ting <kfting@nuvoton.com>
---
 .../bindings/i2c/nuvoton,npcm7xx-i2c.yaml     | 25 +++++++++++++++----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml b/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
index 128444942aec..99fae8489771 100644
--- a/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/nuvoton,npcm7xx-i2c.yaml
@@ -7,17 +7,18 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: nuvoton NPCM7XX I2C Controller Device Tree Bindings
 
 description: |
-  The NPCM750x includes sixteen I2C bus controllers. All Controllers support
-  both master and slave mode. Each controller can switch between master and slave
-  at run time (i.e. IPMB mode). Each controller has two 16 byte HW FIFO for TX and
-  RX.
+  I2C bus controllers of the NPCM series support both master and
+  slave mode. Each controller can switch between master and slave at run time
+  (i.e. IPMB mode). HW FIFO for TX and RX are supported.
 
 maintainers:
   - Tali Perry <tali.perry1@gmail.com>
 
 properties:
   compatible:
-    const: nuvoton,npcm750-i2c
+    enum:
+      - nuvoton,npcm750-i2c
+      - nuvoton,npcm845-i2c
 
   reg:
     maxItems: 1
@@ -36,6 +37,10 @@ properties:
     default: 100000
     enum: [100000, 400000, 1000000]
 
+  nuvoton,sys-mgr:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of system manager register node.
+
 required:
   - compatible
   - reg
@@ -44,6 +49,15 @@ required:
 
 allOf:
   - $ref: /schemas/i2c/i2c-controller.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nuvoton,npcm845-i2c
+
+    then:
+      required:
+        - nuvoton,sys-mgr
 
 unevaluatedProperties: false
 
@@ -57,6 +71,7 @@ examples:
         clock-frequency = <100000>;
         interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
         compatible = "nuvoton,npcm750-i2c";
+        nuvoton,sys-mgr = <&gcr>;
     };
 
 ...
-- 
2.17.1