[PATCH v3 1/2] dt-bindings: spi: nuvoton,ma35d1-qspi: Add Nuvoton MA35D1 QSPI

[Chi-Wen Weng]

Hi Conor,

Thanks for the review.

I will add a default value for num-cs in v4:

   num-cs:
     maximum: 2
     default: 2

The controller has two native chip selects and the driver currently uses
that hardware default.

Best regards,
Chi-Wen

Conor Dooley 於 2026/6/12 上午 01:34 寫道:
> On Thu, Jun 11, 2026 at 05:12:45PM +0800, Chi-Wen Weng wrote:
>> From: Chi-Wen Weng <cwweng at nuvoton.com>
>>
>> Add a devicetree binding for the Quad SPI controller found in
>> Nuvoton MA35D1 SoCs.
>>
>> The controller supports SPI memory devices such as SPI NOR and SPI NAND
>> flashes. It has one register range, one clock input and one reset line,
>> and supports up to two chip selects.
>>
>> Signed-off-by: Chi-Wen Weng <cwweng at nuvoton.com>
>> ---
>>   .../bindings/spi/nuvoton,ma35d1-qspi.yaml     | 62 +++++++++++++++++++
>>   1 file changed, 62 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/spi/nuvoton,ma35d1-qspi.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/spi/nuvoton,ma35d1-qspi.yaml b/Documentation/devicetree/bindings/spi/nuvoton,ma35d1-qspi.yaml
>> new file mode 100644
>> index 000000000000..d3b36e612eb0
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/spi/nuvoton,ma35d1-qspi.yaml
>> @@ -0,0 +1,62 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/spi/nuvoton,ma35d1-qspi.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Nuvoton MA35D1 Quad SPI Controller
>> +
>> +maintainers:
>> +  - Chi-Wen Weng <cwweng at nuvoton.com>
>> +
>> +allOf:
>> +  - $ref: /schemas/spi/spi-controller.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    const: nuvoton,ma35d1-qspi
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  resets:
>> +    maxItems: 1
>> +
>> +  num-cs:
>> +    maximum: 2
> Missing a default of 2, unless you make the property required.
> FWIW, your driver doesn't appear to read this value.
>
> pw-bot: changes-requested
>
> Cheers,
> Conor.
>
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +  - resets
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +    #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
>> +    #include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
>> +
>> +    soc {
>> +        #address-cells = <2>;
>> +        #size-cells = <2>;
>> +
>> +        spi at 40680000 {
>> +            compatible = "nuvoton,ma35d1-qspi";
>> +            reg = <0 0x40680000 0 0x100>;
>> +            interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
>> +            clocks = <&clk QSPI0_GATE>;
>> +            resets = <&sys MA35D1_RESET_QSPI0>;
>> +            #address-cells = <1>;
>> +            #size-cells = <0>;
>> +        };
>> +    };
>> +
>> -- 
>> 2.25.1
>>