[v5,2/6] dt-bindings: phy: qcom,m31: Document qcom,m31 USB phy

Document the M31 USB2 phy present in IPQ5332.

Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
---
v5:
	Add '#phy-cells', to be able to use generic phy
	Remove 'Reviewed-by: Krzysztof Kozlowski' due to above change
v4:
	Move M31 URL to description
	Remove maxItems and relevant content from clock-names
	Change node name to generic name
	'make dt_binding_check DT_SCHEMA_FILES=qcom' passed
v3:
	Incorporate review comments. Will bring in ipq5018 compatible
	string while posting ipq5018 usb patchset.

v1:
	Rename qcom,m31.yaml -> qcom,ipq5332-usb-hsphy.yaml
	Drop default binding "m31,usb-hsphy"
	Add clock
	Remove 'oneOf' from compatible
	Remove 'qscratch' region from register space as it is not needed
	Remove reset-names
	Fix the example definition
---
 .../bindings/phy/qcom,ipq5332-usb-hsphy.yaml       | 51 ++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml

On Fri, Jul 21, 2023 at 10:05:27AM +0530, Varadarajan Narayanan wrote:
> Document the M31 USB2 phy present in IPQ5332.
> 
> Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>

As Sricharan is the first one to certify the patch's origin, it seems
likely that he's the author. Please add a Co-developed-by: Sricharan.

[..]
> diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
> new file mode 100644
> index 0000000..e0b282b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/qcom,ipq5332-usb-hsphy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: M31 USB PHY
> +
> +maintainers:
> +  - Sricharan Ramabadhran <quic_srichara@quicinc.com>
> +  - Varadarajan Narayanan <quic_varada@quicinc.com>
> +
> +description:
> +  USB M31 PHY (https://www.m31tech.com) found in Qualcomm
> +  IPQ5018, IPQ5332 SoCs.
> +
> +properties:
> +  "#phy-cells":
> +    const: 0
> +
> +  compatible:
> +    enum:

const?

> +      - qcom,ipq5332-usb-hsphy
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    items:
> +      - const: cfg_ahb
> +
> +  resets:
> +    maxItems: 1
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
> +    usbphy0: usb-phy@7b000 {

usb@

And you don't need to give the node a label in the example.

> +        compatible = "qcom,ipq5332-usb-hsphy";
> +        reg = <0x0007b000 0x12c>;
> +
> +        clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>;
> +        clock-names = "cfg_ahb";
> +

No #phy-cells?

Regards,
Bjorn

> +        resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> +    };
> -- 
> 2.7.4
>

On Fri, Jul 21, 2023 at 10:10:57PM -0700, Bjorn Andersson wrote:
> On Fri, Jul 21, 2023 at 10:05:27AM +0530, Varadarajan Narayanan wrote:
> > Document the M31 USB2 phy present in IPQ5332.
> > 
> > Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
> 
> As Sricharan is the first one to certify the patch's origin, it seems
> likely that he's the author. Please add a Co-developed-by: Sricharan.
> 
> [..]
> > diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
> > new file mode 100644
> > index 0000000..e0b282b
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
> > @@ -0,0 +1,51 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/phy/qcom,ipq5332-usb-hsphy.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: M31 USB PHY
> > +
> > +maintainers:
> > +  - Sricharan Ramabadhran <quic_srichara@quicinc.com>
> > +  - Varadarajan Narayanan <quic_varada@quicinc.com>
> > +
> > +description:
> > +  USB M31 PHY (https://www.m31tech.com) found in Qualcomm
> > +  IPQ5018, IPQ5332 SoCs.
> > +
> > +properties:
> > +  "#phy-cells":
> > +    const: 0
> > +
> > +  compatible:
> > +    enum:
> 
> const?
> 
> > +      - qcom,ipq5332-usb-hsphy
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +
> > +  clock-names:
> > +    items:
> > +      - const: cfg_ahb
> > +
> > +  resets:
> > +    maxItems: 1
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
> > +    usbphy0: usb-phy@7b000 {
> 
> usb@

You mean phy@? But 'usb2-phy' is accepted too.

> 
> And you don't need to give the node a label in the example.
> 
> > +        compatible = "qcom,ipq5332-usb-hsphy";
> > +        reg = <0x0007b000 0x12c>;
> > +
> > +        clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>;
> > +        clock-names = "cfg_ahb";
> > +
> 
> No #phy-cells?
> 
> Regards,
> Bjorn
> 
> > +        resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> > +    };
> > -- 
> > 2.7.4
> >

On Mon, Jul 24, 2023 at 10:01:36AM -0600, Rob Herring wrote:
> On Fri, Jul 21, 2023 at 10:10:57PM -0700, Bjorn Andersson wrote:
> > On Fri, Jul 21, 2023 at 10:05:27AM +0530, Varadarajan Narayanan wrote:
> > [..]
> > > diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
[..]
> > > +examples:
> > > +  - |
> > > +    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
> > > +    usbphy0: usb-phy@7b000 {
> > 
> > usb@
> 
> You mean phy@? But 'usb2-phy' is accepted too.
> 

Yes, had the controller in mind, sorry about that.

Thanks,
Bjorn

Bjorn & Rob,

On Tue, Jul 25, 2023 at 10:24:15PM -0700, Bjorn Andersson wrote:
> On Mon, Jul 24, 2023 at 10:01:36AM -0600, Rob Herring wrote:
> > On Fri, Jul 21, 2023 at 10:10:57PM -0700, Bjorn Andersson wrote:
> > > On Fri, Jul 21, 2023 at 10:05:27AM +0530, Varadarajan Narayanan wrote:
> > > [..]
> > > > diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq5332-usb-hsphy.yaml
> [..]
> > > > +examples:
> > > > +  - |
> > > > +    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
> > > > +    usbphy0: usb-phy@7b000 {
> > >
> > > usb@
> >
> > You mean phy@? But 'usb2-phy' is accepted too.
> >
>
> Yes, had the controller in mind, sorry about that.

Have posted a new patchset addressing the comments.
Please provide your feedback.

Thanks
Varada