linux-kernel - Re: [PATCH v5 1/2] dt-bindings: usb: qcom,dwc3: Convert USB DWC3 bindings

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Message-ID: <158631747937.216820.504748426462367724@swboyd.mtv.corp.google.com>
Date:   Tue, 07 Apr 2020 20:44:39 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Doug Anderson <dianders@...omium.org>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        Sandeep Maheswaram <sanm@...eaurora.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Manu Gautam <mgautam@...eaurora.org>,
        Sandeep Maheswaram <sanm@...eaurora.org>
Subject: Re: [PATCH v5 1/2] dt-bindings: usb: qcom,dwc3: Convert USB DWC3 bindings

Quoting Sandeep Maheswaram (2020-03-26 00:06:07)
> diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
> new file mode 100644
> index 0000000..0f69475
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
> @@ -0,0 +1,158 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +
[...]
> +    maxItems: 1
> +
> +  interrupts:
> +    items:
> +      - description: The interrupt that is asserted
> +          when a wakeup event is received on USB2 bus.
> +      - description: The interrupt that is asserted
> +          when a wakeup event is received on USB3 bus.
> +      - description: Wakeup event on DM line.
> +      - description: Wakeup event on DP line.

I can see that it was optional before but that still doesn't make sense
to me. The glue hardware from qcom always has interrupts so I'd expect
it to be required in the binding.