[PATCH v2] dt-bindings: mmc: dwcmshc-sdhci: Fix resets array validation

[PATCH v2] dt-bindings: mmc: dwcmshc-sdhci: Fix resets array validation

[hehuan1]

From: Huan He <hehuan1@eswincomputing.com>

The binding defines tuple-style reset-names items for some
compatibles, which implicitly enforces a fixed array length
via JSON Schema.

Defining global maxItems for resets and reset-names causes these
constraints to be intersected via allOf, resulting in an effective
minItems equal to the global maxItems. This leads to dtbs_check
failures reporting reset arrays as too short, even when the DTS
provides the correct number of entries.

Fixes: 30009a21f257 ("dt-bindings: mmc: sdhci-of-dwcmshc: Add Eswin EIC7700")
Signed-off-by: Pritesh Patel <pritesh.patel@einfochips.com>
Signed-off-by: Huan He <hehuan1@eswincomputing.com>

---
Changes in v2:
  - Keep the global maxItems constraints and add minItems: 4 for both
    resets and reset-names properties
  - Update commit message

- Link to v1: https://lore.kernel.org/all/20260211094736.88-1-hehuan1@eswincomputing.com/
---
 Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
index 7e7c55dc2440..f268f3b6f153 100644
--- a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
+++ b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
@@ -50,9 +50,11 @@ properties:
     maxItems: 1
 
   resets:
+    minItems: 4
     maxItems: 5
 
   reset-names:
+    minItems: 4
     maxItems: 5
 
   rockchip,txclk-tapnum:
-- 
2.25.1

Re: [PATCH v2] dt-bindings: mmc: dwcmshc-sdhci: Fix resets array validation

[Krzysztof Kozlowski]

On Sat, Feb 14, 2026 at 02:34:50PM +0800, hehuan1@eswincomputing.com wrote:
> From: Huan He <hehuan1@eswincomputing.com>
> 
> The binding defines tuple-style reset-names items for some
> compatibles, which implicitly enforces a fixed array length
> via JSON Schema.
> 
> Defining global maxItems for resets and reset-names causes these
> constraints to be intersected via allOf, resulting in an effective
> minItems equal to the global maxItems. This leads to dtbs_check
> failures reporting reset arrays as too short, even when the DTS
> provides the correct number of entries.
> 
> Fixes: 30009a21f257 ("dt-bindings: mmc: sdhci-of-dwcmshc: Add Eswin EIC7700")
> Signed-off-by: Pritesh Patel <pritesh.patel@einfochips.com>
> Signed-off-by: Huan He <hehuan1@eswincomputing.com>
> 
> ---
> Changes in v2:
>   - Keep the global maxItems constraints and add minItems: 4 for both
>     resets and reset-names properties
>   - Update commit message
> 
> - Link to v1: https://lore.kernel.org/all/20260211094736.88-1-hehuan1@eswincomputing.com/
> ---
>  Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
> index 7e7c55dc2440..f268f3b6f153 100644
> --- a/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
> +++ b/Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml
> @@ -50,9 +50,11 @@ properties:
>      maxItems: 1
>  
>    resets:
> +    minItems: 4
>      maxItems: 5
>  
>    reset-names:
> +    minItems: 4
>      maxItems: 5

You miss to update now minItems: 5 in one of the "if:" cases. Otherwise
please explain why that device(s) should have now 4 or 5 resets.

Best regards,
Krzysztof