Re: [PATCH v3 01/11] dt-bindings: gpio: vf610: fix clock requirements per SoC

[Peng Fan <peng.fan@linux.dev>]

On Thu, Nov 05, 2026 at 11:52:59AM +0800, Peng Fan (OSS) wrote:
>From: Peng Fan <peng.fan@nxp.com>
>
>The i.MX7ULP GPIO controller needs both the GPIO and PORT clocks,
>while the i.MX8ULP and its derivatives (i.MX93/94/95/952) only have
>a single "gpio" clock. The VF610 controller has no gateable clocks,
>so force clocks and clock-names false.

Sashiko reported:

[Severity: Low]
As reported by Sashiko on v2 [1], this isn't a bug, but in
Documentation/devicetree/bindings/gpio/gpio-vf610.yaml, the fsl,imx8ulp-gpio
family (including fsl,imx93-gpio, fsl,imx94-gpio, and fsl,imx95-gpio) does
not share a compatible fallback with fsl,vf610-gpio or fsl,imx7ulp-gpio, and
almost every hardware resource property now differs across the variants:


I prefer to keep the patch as it is since it has a fixes tag. But anyway
if this is not welcomed, I could separate fsl,imx8ulp-gpio into a new dt-binding
file.

Thanks
Peng

>
>Fixes: c61d8b5791ab ("dt-bindings: gpio: gpio-vf610: Add imx8ulp compatible string")
>Signed-off-by: Peng Fan <peng.fan@nxp.com>
>---
> .../devicetree/bindings/gpio/gpio-vf610.yaml       | 41 ++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
>
>diff --git a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
>index a31f64b6d40b..d1d5315ee164 100644
>--- a/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
>+++ b/Documentation/devicetree/bindings/gpio/gpio-vf610.yaml
>@@ -57,11 +57,13 @@ properties:
>     maxItems: 32
> 
>   clocks:
>+    minItems: 1
>     items:
>       - description: SoC GPIO clock
>       - description: SoC PORT clock
> 
>   clock-names:
>+    minItems: 1
>     items:
>       - const: gpio
>       - const: port
>@@ -117,6 +119,45 @@ allOf:
>           items:
>             - description: GPIO register base address
> 
>+  - if:
>+      properties:
>+        compatible:
>+          const: fsl,vf610-gpio
>+    then:
>+      properties:
>+        clocks: false
>+        clock-names: false
>+
>+  - if:
>+      properties:
>+        compatible:
>+          contains:
>+            const: fsl,imx7ulp-gpio
>+    then:
>+      properties:
>+        clocks:
>+          minItems: 2
>+        clock-names:
>+          minItems: 2
>+      required:
>+        - clocks
>+        - clock-names
>+
>+  - if:
>+      properties:
>+        compatible:
>+          contains:
>+            const: fsl,imx8ulp-gpio
>+    then:
>+      properties:
>+        clocks:
>+          maxItems: 1
>+        clock-names:
>+          maxItems: 1
>+      required:
>+        - clocks
>+        - clock-names
>+
> additionalProperties: false
> 
> examples:
>
>-- 
>2.51.0
>