[EXT] Re: [PATCH 1/2] dt-bindings: phy: mxs-usb-phy: convert to DT schema format

[Xu Yang]

> -----Original Message-----
> From: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
> Sent: Friday, June 2, 2023 9:15 PM
> To: Xu Yang <xu.yang_2 at nxp.com>; robh+dt at kernel.org; krzysztof.kozlowski+dt at linaro.org; conor+dt at kernel.org
> Cc: shawnguo at kernel.org; s.hauer at pengutronix.de; kernel at pengutronix.de; festevam at gmail.com; dl-linux-imx <linux-
> imx at nxp.com>; linux-phy at lists.infradead.org; devicetree at vger.kernel.org; linux-arm-kernel at lists.infradead.org; linux-
> usb at vger.kernel.org; Jun Li <jun.li at nxp.com>
> Subject: [EXT] Re: [PATCH 1/2] dt-bindings: phy: mxs-usb-phy: convert to DT schema format
>
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>
>
> Resending as my previous email probably got lost. If you got it twice,
> apologies.
>
> On 01/06/2023 10:07, Xu Yang wrote:
> > Convert the binding to DT schema format.
> >
>
>
> Thank you for your patch. There is something to discuss/improve.
>
>
> > new file mode 100644
> > index 000000000000..48b0e654e52c
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/mxs-usb-phy.yaml
>
> Filename matching compatibles, so for exmaple fsl,mxs-usbphy.yaml.

Okay.

>
> > @@ -0,0 +1,97 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/phy/mxs-
> usb-
> phy.yaml%23&data=05%7C01%7Cxu.yang_2%40nxp.com%7C6226d685ea124535c3fe08db636b6ae9%7C686ea1d3bc2b4c6fa
> 92cd99c5c301635%7C0%7C0%7C638213085231814761%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2
> luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=b%2Fw1rubqpTN%2B5JagSotDCTmju%2BMHRsuTs
> JzyZ4OALbs%3D&reserved=0
> > +$schema: http://devicetree.org/meta-
> schemas%2Fcore.yaml%23&data=05%7C01%7Cxu.yang_2%40nxp.com%7C6226d685ea124535c3fe08db636b6ae9%7C686ea
> 1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638213085231814761%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM
> DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=LYDKXb56MU2PeLqHdqGnTFQLKs3B
> Yha5KTFyYRCPBPY%3D&reserved=0
> > +
> > +title: Freescale MXS USB Phy Device
> > +
> > +maintainers:
> > +  - Xu Yang <xu.yang_2 at nxp.com>
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - enum:
> > +          - fsl,imx23-usbphy
> > +          - fsl,vf610-usbphy
> > +      - items:
> > +          - enum:
> > +              - fsl,imx28-usbphy
> > +              - fsl,imx6ul-usbphy
> > +              - fsl,imx6sl-usbphy
> > +              - fsl,imx6sx-usbphy
> > +              - fsl,imx6q-usbphy
> > +          - const: fsl,imx23-usbphy
> > +      - items:
> > +          - enum:
> > +              - fsl,imx7ulp-usbphy
> > +              - fsl,imx6sll-usbphy
> > +          - const: fsl,imx6ul-usbphy
> > +          - const: fsl,imx23-usbphy
> > +      - items:
> > +          - const: fsl,imx8dxl-usbphy
> > +          - const: fsl,imx7ulp-usbphy
> > +          - const: fsl,imx6ul-usbphy
> > +          - const: fsl,imx23-usbphy
>
> I cannot find these in the old bindings. Please explain changes to
> conversion in commit msg. So far you wrote that it is pure conversion.

Will add other message in commit.

>
> > +
> > +  reg:
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  interrupts:
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  fsl,anatop:
> > +    description:
> > +      phandle for anatop register, it is only for imx6 SoC series
> > +    $ref: /schemas/types.yaml#/definitions/phandle-array
> > +    maxItems: 1
> > +
> > +  fsl,tx-cal-45-dn-ohms:
> > +    description:
> > +      Resistance (in ohms) of switchable high-speed trimming resistor
> > +      connected in parallel with the 45 ohm resistor that terminates
> > +      the DN output signal.
> > +    minimum: 35
> > +    maximum: 54
> > +    default: 45
> > +
> > +  fsl,tx-cal-45-dp-ohms:
> > +    description:
> > +      Resistance (in ohms) of switchable high-speed trimming resistor
> > +      connected in parallel with the 45 ohm resistor that terminates
> > +      the DP output signal.
> > +    minimum: 35
> > +    maximum: 54
> > +    default: 45
> > +
> > +  fsl,tx-d-cal:
> > +    description:
> > +      Current trimming value (as a percentage) of the 17.78 mA TX
> > +      reference current.
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    minimum: 79
> > +    maximum: 119
> > +    default: 100
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +
>
> missing allOf narrowing anatop to imx6. Also interrupts and reg should
> be narrowed to respective variants.

Will add such limitation.

>
> > +unevaluatedProperties: false
>
> Instead additionalProperties: false.

Okay.

>
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +    usbphy1: usb-phy at 20c9000 {
> > +        compatible = "fsl,imx6q-usbphy", "fsl,imx23-usbphy";
> > +        reg = <0x020c9000 0x1000>;
> > +        interrupts = <0 44 IRQ_TYPE_LEVEL_HIGH>;
>
> Is 0 known flag? Use defines for it.

Will use defines.

>
> > +        fsl,anatop = <&anatop>;
> > +    };
> > +
> > +...
>
> Best regards,
> Krzysztof

Thanks,
Xu Yang