linux-kernel - Re: [PATCH 1/2] dt-bindings: phy: add bcm63xx-usbh bindings

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Date:   Tue, 16 Jun 2020 10:17:16 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Álvaro Fernández Rojas <noltari@...il.com>,
        simon@...e.lp0.eu, jonas.gorski@...il.com, kishon@...com,
        vkoul@...nel.org, robh+dt@...nel.org, f.fainelli@...il.com,
        bcm-kernel-feedback-list@...adcom.com, p.zabel@...gutronix.de,
        krzk@...nel.org, gregkh@...uxfoundation.org, alcooperx@...il.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] dt-bindings: phy: add bcm63xx-usbh bindings



On 6/16/2020 1:34 AM, Álvaro Fernández Rojas wrote:
> Document BCM63xx USBH PHY bindings.
> 
> Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
> ---
>  .../bindings/phy/brcm,bcm63xx-usbh-phy.yaml   | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/brcm,bcm63xx-usbh-phy.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/brcm,bcm63xx-usbh-phy.yaml b/Documentation/devicetree/bindings/phy/brcm,bcm63xx-usbh-phy.yaml
> new file mode 100644
> index 000000000000..3e7c97799b91
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/brcm,bcm63xx-usbh-phy.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/phy/brcm,bcm63xx-usbh-phy.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: BCM63xx USBH PHY
> +
> +maintainers:
> +  - Álvaro Fernández Rojas <noltari@...il.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - brcm,bcm6318-usbh-phy
> +      - brcm,bcm6328-usbh-phy
> +      - brcm,bcm6358-usbh-phy
> +      - brcm,bcm6362-usbh-phy
> +      - brcm,bcm6368-usbh-phy
> +      - brcm,bcm63268-usbh-phy
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: usbh
> +      - const: usb_ref
> +
> +  resets:
> +    maxItems: 1
> +
> +  "#phy-cells":
> +    const: 0

On 6328, the same register space allows the controlling of the USB PHY
in either host or device mode, so I believe you would need to add a
#phy-cells = 1 in order to distinguish the consumer (host versus device)
if we get to the point where drivers/usb/gadget/udc/bcm63xx_udc.c
becomes DT aware.

Other than that, this looks good to me!
-- 
Florian