RE: [PATCH v5 0/2] Add ASPEED AST2600 I2Cv2 controller driver

[Ryan Chen]

Hello Krzysztof,


> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
> Sent: Monday, February 20, 2023 6:36 PM
> To: Ryan Chen <ryan_chen@xxxxxxxxxxxxxx>; Rob Herring
> <robh+dt@xxxxxxxxxx>; Krzysztof Kozlowski
> <krzysztof.kozlowski+dt@xxxxxxxxxx>; Joel Stanley <joel@xxxxxxxxx>; Andrew
> Jeffery <andrew@xxxxxxxx>; Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>;
> openbmc@xxxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> linux-aspeed@xxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v5 0/2] Add ASPEED AST2600 I2Cv2 controller driver
> 
> On 20/02/2023 10:56, Ryan Chen wrote:
> >>
> >>> And also have separate i2c master and slave register set for control.
> >>
> >> Since several of my questions remained unanswered and quite frankly
> >> it's fruitless... so let me read the commit msg directly - it's the
> >> same device, just with different register layout. Having new
> >> compatible makes sense, but this should be part of old binding.
> >>
> > Sorry, I am confused, Do you mean I should base on original
> > Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml
> > Add new compatible? Not add another aspeed,i2cv2.yaml.
> 
> Yes. New compatible and new syscon phandle (constrained to specific
> compatibles in allOf:if:then:) to the old binding.
Thank your guidance.
The following is my sample modify, if my understand is correct, I will update in patch1 thread discussion.
I need add in original aspeed,i2c.yaml not aspeed,i2cv2.yaml
allOf:
  - $ref: /schemas/i2c/i2c-controller.yaml#
  - if:
      properties:
        compatible:
          contains:
            const: aspeed,ast2600-i2cv2

    then:
      required:
        - aspeed,gr
		-as is.

Best regards,
Ryan Chen