[PATCH] dt-bindings: input: touchscreen: imagis: add missing minItems

[PATCH] dt-bindings: input: touchscreen: imagis: add missing minItems

[Duje Mihanović]

The binding currently expects exactly 5 keycodes, which matches the
chip's theoretical maximum but probably not the number of touch keys on
any phone using the IST3032C. Add a minItems value of 2 to prevent
dt-validate complaints.

Also add another example to make sure the linux,keycodes property is
checked.

Signed-off-by: Duje Mihanović <duje@dujemihanovic.xyz>
---
 .../bindings/input/touchscreen/imagis,ist3038c.yaml    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml b/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
index bd8ede3a4ad8939cef97e9b177548a8fc8386df7..0ef79343bf9a223501aff8b6a525b873e777ea20 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
@@ -35,6 +35,7 @@ properties:
 
   linux,keycodes:
     description: Keycodes for the touch keys
+    minItems: 2
     maxItems: 5
 
   touchscreen-size-x: true
@@ -87,5 +88,22 @@ examples:
         touchscreen-inverted-y;
       };
     };
+  - |
+    #include <dt-bindings/input/linux-event-codes.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      touchscreen@50 {
+        compatible = "imagis,ist3032c";
+        reg = <0x50>;
+        interrupt-parent = <&gpio>;
+        interrupts = <72 IRQ_TYPE_EDGE_FALLING>;
+        vdd-supply = <&ldo2>;
+        touchscreen-size-x = <480>;
+        touchscreen-size-y = <800>;
+        linux,keycodes = <KEY_APPSELECT>, <KEY_BACK>;
+      };
+    };
 
 ...

---
base-commit: c17b750b3ad9f45f2b6f7e6f7f4679844244f0b9
change-id: 20250824-imagis-minitems-4a71387ce61b

Best regards,
-- 
Duje Mihanović <duje@dujemihanovic.xyz>

Re: [PATCH] dt-bindings: input: touchscreen: imagis: add missing minItems

[Conor Dooley]

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On Sun, Aug 24, 2025 at 06:12:05PM +0200, Duje Mihanović wrote:
> The binding currently expects exactly 5 keycodes, which matches the
> chip's theoretical maximum but probably not the number of touch keys on
> any phone using the IST3032C. Add a minItems value of 2 to prevent
> dt-validate complaints.

Does this mean that there are devicetrees in the wild that use < 5
keycodes?

> 
> Also add another example to make sure the linux,keycodes property is
> checked.
> 
> Signed-off-by: Duje Mihanović <duje@dujemihanovic.xyz>
> ---
>  .../bindings/input/touchscreen/imagis,ist3038c.yaml    | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml b/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
> index bd8ede3a4ad8939cef97e9b177548a8fc8386df7..0ef79343bf9a223501aff8b6a525b873e777ea20 100644
> --- a/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
> +++ b/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
> @@ -35,6 +35,7 @@ properties:
>  
>    linux,keycodes:
>      description: Keycodes for the touch keys
> +    minItems: 2
>      maxItems: 5
>  
>    touchscreen-size-x: true
> @@ -87,5 +88,22 @@ examples:
>          touchscreen-inverted-y;
>        };
>      };
> +  - |
> +    #include <dt-bindings/input/linux-event-codes.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      touchscreen@50 {
> +        compatible = "imagis,ist3032c";
> +        reg = <0x50>;
> +        interrupt-parent = <&gpio>;
> +        interrupts = <72 IRQ_TYPE_EDGE_FALLING>;
> +        vdd-supply = <&ldo2>;
> +        touchscreen-size-x = <480>;
> +        touchscreen-size-y = <800>;
> +        linux,keycodes = <KEY_APPSELECT>, <KEY_BACK>;

Does this really need a dedicated example? Why can't the property go
into the existing one?

> +      };
> +    };
>  
>  ...
> 
> ---
> base-commit: c17b750b3ad9f45f2b6f7e6f7f4679844244f0b9
> change-id: 20250824-imagis-minitems-4a71387ce61b
> 
> Best regards,
> -- 
> Duje Mihanović <duje@dujemihanovic.xyz>
> 

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Re: [PATCH] dt-bindings: input: touchscreen: imagis: add missing minItems

[Duje Mihanović]

On Monday, 25 August 2025 18:42:38 Central European Summer Time Conor Dooley wrote:
> On Sun, Aug 24, 2025 at 06:12:05PM +0200, Duje Mihanović wrote:
> > The binding currently expects exactly 5 keycodes, which matches the
> > chip's theoretical maximum but probably not the number of touch keys on
> > any phone using the IST3032C. Add a minItems value of 2 to prevent
> > dt-validate complaints.
> 
> Does this mean that there are devicetrees in the wild that use < 5
> keycodes?

Indeed.

> > 
> > +  - |
> > +    #include <dt-bindings/input/linux-event-codes.h>
> > +    #include <dt-bindings/interrupt-controller/irq.h>
> > +    i2c {
> > +      #address-cells = <1>;
> > +      #size-cells = <0>;
> > +      touchscreen@50 {
> > +        compatible = "imagis,ist3032c";
> > +        reg = <0x50>;
> > +        interrupt-parent = <&gpio>;
> > +        interrupts = <72 IRQ_TYPE_EDGE_FALLING>;
> > +        vdd-supply = <&ldo2>;
> > +        touchscreen-size-x = <480>;
> > +        touchscreen-size-y = <800>;
> > +        linux,keycodes = <KEY_APPSELECT>, <KEY_BACK>;
> 
> Does this really need a dedicated example? Why can't the property go
> into the existing one?

Only the IST3032C is currently known to support these keys and this is enforced
by the binding, so it wouldn't really make sense to add it to the 3038C
example.

Regards,
--
Duje

Re: [PATCH] dt-bindings: input: touchscreen: imagis: add missing minItems

[Conor Dooley]

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On Mon, Aug 25, 2025 at 08:57:57PM +0200, Duje Mihanović wrote:
> On Monday, 25 August 2025 18:42:38 Central European Summer Time Conor Dooley wrote:
> > On Sun, Aug 24, 2025 at 06:12:05PM +0200, Duje Mihanović wrote:
> > > The binding currently expects exactly 5 keycodes, which matches the
> > > chip's theoretical maximum but probably not the number of touch keys on
> > > any phone using the IST3032C. Add a minItems value of 2 to prevent
> > > dt-validate complaints.
> > 
> > Does this mean that there are devicetrees in the wild that use < 5
> > keycodes?
> 
> Indeed.

oke, Acked-by: Conor Dooley <conor.dooley@microchip.com>

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Re: [PATCH] dt-bindings: input: touchscreen: imagis: add missing minItems

[Dmitry Torokhov]

On Tue, Aug 26, 2025 at 06:38:05PM +0100, Conor Dooley wrote:
> On Mon, Aug 25, 2025 at 08:57:57PM +0200, Duje Mihanović wrote:
> > On Monday, 25 August 2025 18:42:38 Central European Summer Time Conor Dooley wrote:
> > > On Sun, Aug 24, 2025 at 06:12:05PM +0200, Duje Mihanović wrote:
> > > > The binding currently expects exactly 5 keycodes, which matches the
> > > > chip's theoretical maximum but probably not the number of touch keys on
> > > > any phone using the IST3032C. Add a minItems value of 2 to prevent
> > > > dt-validate complaints.
> > > 
> > > Does this mean that there are devicetrees in the wild that use < 5
> > > keycodes?
> > 
> > Indeed.
> 
> oke, Acked-by: Conor Dooley <conor.dooley@microchip.com>

Applied, thank you.

-- 
Dmitry