[PATCH] arm64: dts: rockchip: Fix vdec register blocks order on RK3576

[Cristian Ciocaltea]

On 2/23/26 4:39 PM, Diederik de Haas wrote:
> On Mon Feb 23, 2026 at 3:31 PM CET, Sebastian Reichel wrote:
>> On Mon, Feb 23, 2026 at 02:25:05PM +0200, Cristian Ciocaltea wrote:
>>> When building device trees for the RK3576 based boards, DTC shows the
>>> following complaint:
>>>
>>>   rk3576.dtsi:1282.30-1304.5: Warning (simple_bus_reg): /soc/video-codec at 27b00000: simple-bus unit address format error, expected "27b00100"
>>>
>>> Provide the register blocks in the expected address-based order.
>>>
>>> Fixes: da0de806d8b4 ("arm64: dts: rockchip: Add the vdpu383 Video Decoder on rk3576")
>>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
>>> ---
>>
>> This fixes this warning, but instead creates a new one, because the
>> reg-names order is fixed in the DT binding:
>>
>>    reg:
>>      minItems: 1
>>      items:
>>        - description: The function configuration registers base
>>        - description: The link table configuration registers base
>>        - description: The cache configuration registers base
>>   
>>    reg-names:
>>      items:
>>        - const: function
>>        - const: link
>>        - const: cache

Oh, right, missed to check the binding.. :-(

> 
> See also the prior discussion wrt this:
> https://lore.kernel.org/linux-rockchip/edabca63-594e-44ae-8a3d-0f60987a8664@collabora.com/

That's interesting, I'm also not able to trigger the warning on RK3588.

Regardless, the binding can be easily adjusted with the patch below.  Hence I'm
going to handle this in v2, unless there's a reason against moving further.

Thanks,
Cristian


--- a/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
+++ b/Documentation/devicetree/bindings/media/rockchip,vdec.yaml
@@ -34,10 +34,12 @@ properties:
       - description: The cache configuration registers base

   reg-names:
-    items:
+    oneOf:
       - const: function
-      - const: link
-      - const: cache
+      - items:
+          - const: link
+          - const: function
+          - const: cache

   interrupts:
     maxItems: 1