Re: [PATCH 1/2 v1] usb: phy: phy-gpio-vbus-usb: Add devicetree bindings

[Rob Herring <robh@kernel.org>]

On Sat, Oct 22, 2022 at 02:11:48PM +0200, Linus Walleij wrote:
> This adds a simple device tree binding for a GPIO-based
> VBUS detection PHY.
> 
> Cc: Felipe Balbi <balbi@kernel.org>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
>  .../bindings/phy/phy-usb-vbus-gpio.yaml       | 47 +++++++++++++++++++
>  1 file changed, 47 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-usb-vbus-gpio.yaml
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-usb-vbus-gpio.yaml b/Documentation/devicetree/bindings/phy/phy-usb-vbus-gpio.yaml
> new file mode 100644
> index 000000000000..4e10b58f8235
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-usb-vbus-gpio.yaml
> @@ -0,0 +1,47 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/phy-usb-vbus-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: GPIO-based VBUS detection USB PHY
> +
> +maintainers:
> +  - Linus Walleij <linus.walleij@linaro.org>
> +
> +description: A VBUS event occurs when a USB plug is attached to
> +  a USB host and peripheral, the voltage (VBUS) is exposed from the
> +  host to the peripheral when the last of the two ends of the
> +  cable is plugged in. This can be either on the host side or on
> +  the peripheral side, whichever comes last. It is possible to
> +  provide a very simple USB VBUS detection mechanism by using a
> +  GPIO line that will trigger on an edge event on the VBUS
> +  pin.

We already have Vbus GPIOs in the USB connector binding and there is 
also the usb-nop-transceiver. Surely one of those works for you? 
Preferably the former.

Rob