[PATCH v4 1/4] dt-bindings: memory-controllers: ti, gpmc: Add compatible for AM64

[Roger Quadros]

AM64 SoC contains the GPMC module. Add compatible for it.

Newer SoCs don't necessarily map GPMC data region at the same place
as legacy SoCs. Add reg-names "data", to provide this information to
the device driver.

Signed-off-by: Roger Quadros <rogerq at kernel.org>
Reviewed-by: Rob Herring <robh at kernel.org>
---
 .../bindings/memory-controllers/ti,gpmc.yaml  | 23 ++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml b/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml
index 25b42d68f9b3..64dc9d398d9a 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/ti,gpmc.yaml
@@ -23,13 +23,20 @@ properties:
     items:
       - enum:
           - ti,am3352-gpmc
+          - ti,am64-gpmc
           - ti,omap2420-gpmc
           - ti,omap2430-gpmc
           - ti,omap3430-gpmc
           - ti,omap4430-gpmc
 
   reg:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: cfg
+      - const: data
 
   interrupts:
     maxItems: 1
@@ -44,6 +51,9 @@ properties:
     items:
       - const: fck
 
+  power-domains:
+    maxItems: 1
+
   dmas:
     items:
       - description: DMA channel for GPMC NAND prefetch
@@ -133,6 +143,17 @@ required:
   - "#address-cells"
   - "#size-cells"
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,am64-gpmc
+    then:
+      required:
+        - reg-names
+        - power-domains
+
 additionalProperties: false
 
 examples:
-- 
2.17.1