[PATCH v3 1/3] media: dt-bindings: rockchip,vdec: Add alternative reg-names order for RK35{76,88}

[Cristian Ciocaltea]

With the introduction of the RK3588 SoC, and RK3576 afterwards, the
'link' and 'cache' register blocks have been provided for the video
decoder unit in addition to the existing 'function' one, which now shows
up in between them (from address-based ordering point of view).

However, the binding does not properly describe this hardware layout, as
the new blocks are listed after the old one.  Therefore it breaks the
convention expecting the unit address to indicate the first register
range.

Since the binding changes have been already released and a fix would
bring up an ABI break, mark the current 'reg-names' listing as
deprecated and introduce an alternative 'link,function,cache' one.

Additionally, drop the 'reg' description items as the order is not fixed
anymore, while the information they offer is not very relevant anyway.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
 .../devicetree/bindings/media/rockchip,vdec.yaml      | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/rockchip,vdec.yaml b/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
index 809fda45b3bd..3f6072e8baa5 100644
--- a/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
+++ b/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
@@ -28,16 +28,21 @@ properties:
 
   reg:
     minItems: 1
-    items:
-      - description: The function configuration registers base
-      - description: The link table configuration registers base
-      - description: The cache configuration registers base
+    maxItems: 3
 
   reg-names:
-    items:
+    oneOf:
       - const: function
-      - const: link
-      - const: cache
+      - items:
+          - const: link
+          - const: function
+          - const: cache
+      - items:
+          - const: function
+          - const: link
+          - const: cache
+        deprecated: true
+        description: Use link,function,cache block order instead.
 
   interrupts:
     maxItems: 1

-- 
2.52.0