linux-kernel - Re: [PATCH 7/7] usb: dwc3: qcom: Enable gpio-usb-conn based role-switching

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Date:   Tue, 17 Mar 2020 15:22:22 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     balbi@...nel.org, gregkh@...uxfoundation.org,
        linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jackp@...eaurora.org,
        robh@...nel.org, Andy Gross <agross@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: Re: [PATCH 7/7] usb: dwc3: qcom: Enable gpio-usb-conn based
 role-switching

On 17/03/2020 06:31, Bjorn Andersson wrote:
> I don't yet have a sane suggestion on how to redesign the dependency
> between the two drivers in order to avoid this, but it's at least not
> possible to access the child's state data from dwc3_qcom_probe().

yep, this should be modeled as the dwc3 registering with the parent 
role-switch, like gpio-usb-conn does with dwc3.

I have an idea for a patch, I'll v2 this.