From: Chaoyi Chen <chaoyi.chen@rock-chips.com>

The iommu found on RK3576 NPU/RKVDEC may contains more than one
interface clock.

Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
---
 .../devicetree/bindings/iommu/rockchip,iommu.yaml         | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml b/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
index 6ce41d11ff5e..11cc22a0b1d3 100644
--- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
+++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
@@ -42,14 +42,22 @@ properties:
     minItems: 1
 
   clocks:
+    minItems: 2
     items:
       - description: Core clock
       - description: Interface clock
+      - description: Interface clock 1
+      - description: Interface clock 2
+      - description: Interface clock 3
 
   clock-names:
+    minItems: 2
     items:
       - const: aclk
       - const: iface
+      - const: iface_1
+      - const: iface_2
+      - const: iface_3
 
   "#iommu-cells":
     const: 0
-- 
2.51.1

On Wed, Nov 26, 2025 at 04:33:44PM +0800, Chaoyi Chen wrote:
> From: Chaoyi Chen <chaoyi.chen@rock-chips.com>
> 
> The iommu found on RK3576 NPU/RKVDEC may contains more than one
> interface clock.

So you need to restrict this per each variant. See writign schema doc in
DT dir.

Best regards,
Krzysztof

On 11/27/2025 3:49 PM, Krzysztof Kozlowski wrote:
> On Wed, Nov 26, 2025 at 04:33:44PM +0800, Chaoyi Chen wrote:
>> From: Chaoyi Chen <chaoyi.chen@rock-chips.com>
>>
>> The iommu found on RK3576 NPU/RKVDEC may contains more than one
>> interface clock.
> 
> So you need to restrict this per each variant. See writign schema doc in
> DT dir.

Oh, I will rewrite it in v2. Thank you.


> 
> Best regards,
> Krzysztof
> 
> 
> 

-- 
Best, 
Chaoyi