linux-kernel - RE: [PATCH v5 1/6] dt-bindings: phy: samsung,usb3-drd-phy: add ExynosAutov920 HS phy compatible

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Message-ID: <000001dc0795$c0432660$40c97320$@samsung.com>
Date: Thu, 7 Aug 2025 17:51:02 +0530
From: "Pritam Manohar Sutar" <pritam.sutar@...sung.com>
To: "'Rob Herring'" <robh@...nel.org>
Cc: <vkoul@...nel.org>, <kishon@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <alim.akhtar@...sung.com>,
	<andre.draszik@...aro.org>, <peter.griffin@...aro.org>,
	<kauschluss@...root.org>, <ivo.ivanov.ivanov1@...il.com>,
	<igor.belwon@...tallysanemainliners.org>, <m.szyprowski@...sung.com>,
	<s.nawrocki@...sung.com>, <linux-phy@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-samsung-soc@...r.kernel.org>,
	<rosa.pila@...sung.com>, <dev.tailor@...sung.com>, <faraz.ata@...sung.com>,
	<muhammed.ali@...sung.com>, <selvarasu.g@...sung.com>
Subject: RE: [PATCH v5 1/6] dt-bindings: phy: samsung,usb3-drd-phy: add
 ExynosAutov920 HS phy compatible

Hi Rob, 

> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: 07 August 2025 05:12 AM
> To: Pritam Manohar Sutar <pritam.sutar@...sung.com>
> Cc: vkoul@...nel.org; kishon@...nel.org; krzk+dt@...nel.org;
> conor+dt@...nel.org; alim.akhtar@...sung.com; andre.draszik@...aro.org;
> peter.griffin@...aro.org; kauschluss@...root.org;
> ivo.ivanov.ivanov1@...il.com; igor.belwon@...tallysanemainliners.org;
> m.szyprowski@...sung.com; s.nawrocki@...sung.com; linux-
> phy@...ts.infradead.org; devicetree@...r.kernel.org; linux-
> kernel@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
> samsung-soc@...r.kernel.org; rosa.pila@...sung.com;
> dev.tailor@...sung.com; faraz.ata@...sung.com;
> muhammed.ali@...sung.com; selvarasu.g@...sung.com
> Subject: Re: [PATCH v5 1/6] dt-bindings: phy: samsung,usb3-drd-phy: add
> ExynosAutov920 HS phy compatible
> 
> On Tue, Aug 05, 2025 at 05:22:11PM +0530, Pritam Manohar Sutar wrote:
> > This SoC has USB2.0 phy and supports only UTMI+ interface. This phy
> > requires two clocks, named as "phy" and "ref". The required supplies
> > for this phy are vdd075_usb20(0.75v), vdd18_usb20(1.8v),
> vdd33_usb20(3.3v).
> >
> > Add a dedicated compatible string for USB HS phy found in this SoC.
> >
> > Signed-off-by: Pritam Manohar Sutar <pritam.sutar@...sung.com>
> > ---
> >  .../bindings/phy/samsung,usb3-drd-phy.yaml    | 19
> +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> >
> > diff --git
> > a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
> > b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml
> > index e906403208c0..1932a2272ef9 100644
> > --- a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-
> phy.yaml
> > +++ b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-
> phy.yaml
> > @@ -34,6 +34,7 @@ properties:
> >        - samsung,exynos7870-usbdrd-phy
> >        - samsung,exynos850-usbdrd-phy
> >        - samsung,exynos990-usbdrd-phy
> > +      - samsung,exynosautov920-usbdrd-phy
> >
> >    clocks:
> >      minItems: 1
> > @@ -110,6 +111,12 @@ properties:
> >    vddh-usbdp-supply:
> >      description: VDDh power supply for the USB DP phy.
> >
> > +  dvdd075-usb20-supply:
> > +    description: 0.75V power supply for the USB 2.0 phy.
> > +
> > +  vdd18-usb20-supply:
> > +    description: 1.8V power supply for the USB 2.0 phy.
> > +
> >  required:
> >    - compatible
> >    - clocks
> > @@ -219,6 +226,7 @@ allOf:
> >                - samsung,exynos7870-usbdrd-phy
> >                - samsung,exynos850-usbdrd-phy
> >                - samsung,exynos990-usbdrd-phy
> > +              - samsung,exynosautov920-usbdrd-phy
> >      then:
> >        properties:
> >          clocks:
> > @@ -235,6 +243,17 @@ allOf:
> >
> >          reg-names:
> >            maxItems: 1
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - samsung,exynosautov920-usbdrd-phy
> > +    then:
> > +      required:
> > +        - dvdd075-usb20-supply
> > +        - vdd18-usb20-supply
> > +        - vdd33-usb20-supply
> 
> Presumably the existing devices don't have these new supplies, so:
> 
> else:
>   properties:
>     dvdd075-usb20-supply: false
>     vdd18-usb20-supply: false

Appreciated for the suggestion. Will add this change in next version (v6) of
the patch-set. 
Snippet will look as mentioned below.

+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - samsung,exynosautov920-usbdrd-phy
+    then:
+      required:
+        - dvdd075-usb20-supply
+        - vdd18-usb20-supply
+        - vdd33-usb20-supply
+
+    else:
+      properties:
+        dvdd075-usb20-supply: false
+        vdd18-usb20-supply: false

Thank you.

Regards,
Pritam