Re: [PATCH] dt-bindings: mfd: ti,keystone-devctrl: Convert to DT schema

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 2 potential issue(s) to consider:
- [Medium] The schema enforces non-compliant, legacy device tree node names (containing underscores) for child nodes via `patternProperties`, blocking the use of standard generic names and contradicting the commit message.
- [Low] The YAML example references undefined phandles (`&devctrl` and `&pllctrl`), which will cause a fatal `dtc` compilation error during `make dt_binding_check`.
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--- Patch [1]: [PATCH] dt-bindings: mfd: ti,keystone-devctrl: Convert to DT schema ---
commit f59b6bface010fc243ef7f899dbb8dddf737e2c5
Author: Bhargav Joshi <j.bhargav.u@gmail.com>

dt-bindings: mfd: ti,keystone-devctrl: Convert to DT schema
    
Converts the Texas Instruments Keystone Device State Control binding from
legacy text format to DT schema. Adds "simple-mfd" support, enforces child
bus properties, and adds validations for standard child nodes.

> diff --git a/Documentation/devicetree/bindings/mfd/ti,keystone-devctrl.yaml b/Documentation/devicetree/bindings/mfd/ti,keystone-devctrl.yaml
> new file mode 100644
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/ti,keystone-devctrl.yaml
[ ... ]
> +patternProperties:
> +  "^keystone_dsp_gpio@[0-9a-f]+$":
> +    type: object
> +    description: Keystone DSP GPIO controller
> +
> +  "^keystone_irq@[0-9a-f]+$":
> +    type: object
> +    description: Keystone DSP to ARM interrupt controller

[Severity: Medium]
The commit message mentions updating node names to conform with standard
Devicetree specifications. However, these patternProperties enforce names
with underscores like "keystone_dsp_gpio" and "keystone_irq". 

Does this block the use of standard generic names (like "gpio" or
"interrupt-controller")? Because additionalProperties is false, using generic
names in a DTS file would cause validation errors. Could these patterns be
updated to match generic names instead?

[ ... ]
> +examples:
[ ... ]
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    device-state-control@2620000 {
> +        compatible = "ti,keystone-devctrl", "syscon", "simple-mfd";
> +        reg = <0x02620000 0x1000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        ranges = <0x0 0x02620000 0x1000>;
> +
> +        keystone_irq@2a0 {
> +            compatible = "ti,keystone-irq";
> +            reg = <0x2a0 0x4>;
> +            interrupts = <GIC_SPI 4 IRQ_TYPE_EDGE_RISING>;
> +            interrupt-controller;
> +            #interrupt-cells = <1>;
> +            ti,syscon-dev = <&devctrl 0x2a0>;
> +        };
> +
> +        reset-controller@328 {
> +            compatible = "ti,keystone-reset";
> +            reg = <0x328 0x10>;
> +            ti,syscon-pll = <&pllctrl 0xe4>;
> +            ti,syscon-dev = <&devctrl 0x328>;
> +            ti,wdt-list = <0>;
> +        };
> +    };

[Severity: Low]
The example uses phandles for &devctrl and &pllctrl, but it appears these
labels are not defined in the example block. 

Won't this cause a fatal dtc compilation error during make dt_binding_check? 
Could we define these labels on the parent node or a dummy node in the 
example so that the build succeeds?

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260813-ti-keystone-devctrl-v1-1-6f0aa87d9af8@gmail.com?part=1