linux-kernel - Re: [PATCH v5 1/2] dt-bindings: usb: Add the binding example for the Genesys Logic GL3523 hub

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Message-ID: <20231130-snub-backshift-2f69754cf58f@spud>
Date:   Thu, 30 Nov 2023 15:22:47 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Anand Moon <linux.amoon@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Icenowy Zheng <uwu@...nowy.me>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        linux-amlogic@...ts.infradead.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 1/2] dt-bindings: usb: Add the binding example for the
 Genesys Logic GL3523 hub

On Thu, Nov 30, 2023 at 03:16:33PM +0000, Conor Dooley wrote:
> On Thu, Nov 30, 2023 at 11:01:26AM +0530, Anand Moon wrote:
> > Add the binding example for the USB3.1 Genesys Logic GL3523
> > integrates with USB 3.1 Gen 1 Super Speed and USB 2.0 High-Speed
> > hub.
> > 
> > For onboard hub controllers that support USB 3.x and USB 2.0 hubs
> > with shared resets and power supplies, this property is used to identify
> > the hubs with which these are shared.
> > 
> 
> > [Conor Dooley: upgrade peer-hub description]
> 
> This should not be in the commit message. Otherwise,
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> 
> Cheers,
> Conor.
> 
> > Signed-off-by: Anand Moon <linux.amoon@...il.com>
> > ---
> > v5: upgrade peer-hub description : Conor Dooley
> > [0] https://www.genesyslogic.com.tw/en/product_view.php?show=67 [Block Diagram]
> > v4: Fix the description of peer-hub and update the commit message.
> > Schematics of the Odroid N2+
> > https://dn.odroid.com/S922X/ODROID-N2/Schematic/odroid-n2_rev0.6_20210121.pdf
> > V3: fix the dt_binding_check error, added new example for Genesys GL3523
> > v2: added Genesys GL3523 binding
> > v1: none
> > ---
> >  .../bindings/usb/genesys,gl850g.yaml          | 65 +++++++++++++++++--
> >  1 file changed, 61 insertions(+), 4 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > index ee08b9c3721f..499192ea4074 100644
> > --- a/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > +++ b/Documentation/devicetree/bindings/usb/genesys,gl850g.yaml
> > @@ -9,9 +9,6 @@ title: Genesys Logic USB hub controller
> >  maintainers:
> >    - Icenowy Zheng <uwu@...nowy.me>
> >  
> > -allOf:
> > -  - $ref: usb-device.yaml#
> > -
> >  properties:
> >    compatible:
> >      enum:
> > @@ -27,12 +24,46 @@ properties:
> >  
> >    vdd-supply:
> >      description:
> > -      the regulator that provides 3.3V core power to the hub.
> > +      phandle to the regulator that provides power to the hub.

Wait, why is this text changing? I don't see it mentioned anywhere why
this is no longer specifically 3.3v

Thanks,
Conor.

> > +
> > +  peer-hub:
> > +    $ref: /schemas/types.yaml#/definitions/phandle
> > +    description:
> > +      For onboard hub controllers that support USB 3.x and USB 2.0 hubs
> > +      with shared resets and power supplies, this property is used to identify
> > +      the hubs with which these are shared.
> >  
> >  required:
> >    - compatible
> >    - reg
> >  
> > +allOf:
> > +  - $ref: usb-device.yaml#
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - usb5e3,608
> > +    then:
> > +      properties:
> > +        peer-hub: false
> > +        vdd-supply: false
> > +        reset-gpios: true
> > +
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - usb5e3,610
> > +              - usb5e3,620
> > +    then:
> > +      properties:
> > +        peer-hub: true
> > +        vdd-supply: true
> > +        reset-gpios: true
> > +
> >  additionalProperties: false
> >  
> >  examples:
> > @@ -49,3 +80,29 @@ examples:
> >              reset-gpios = <&pio 7 2 GPIO_ACTIVE_LOW>;
> >          };
> >      };
> > +
> > +  - |
> > +    #include <dt-bindings/gpio/gpio.h>
> > +    usb {
> > +        dr_mode = "host";
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        /* 2.0 hub on port 1 */
> > +        hub_2_0: hub@1 {
> > +            compatible = "usb5e3,610";
> > +            reg = <1>;
> > +            peer-hub = <&hub_3_0>;
> > +            reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
> > +            vdd-supply = <&vcc_5v>;
> > +        };
> > +
> > +        /* 3.1 hub on port 4 */
> > +        hub_3_0: hub@2 {
> > +            compatible = "usb5e3,620";
> > +            reg = <2>;
> > +            peer-hub = <&hub_2_0>;
> > +            reset-gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
> > +            vdd-supply = <&vcc_5v>;
> > +        };
> > +    };
> > -- 
> > 2.42.0
> > 



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