linux-kernel - Re: [PATCH v2 2/2] phy: qcom-usb-hs: Add qcom,dp-manual-pullup logic

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Message-ID: <Y67UH0xfTPH0GN+S@gerhold.net>
Date:   Fri, 30 Dec 2022 13:05:51 +0100
From:   Stephan Gerhold <stephan@...hold.net>
To:     Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Cc:     agross@...nel.org, andersson@...nel.org, vkoul@...nel.org,
        kishon@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, konrad.dybcio@...aro.org,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org
Subject: Re: [PATCH v2 2/2] phy: qcom-usb-hs: Add qcom,dp-manual-pullup logic

On Thu, Dec 29, 2022 at 11:38:04PM +0000, Bryan O'Donoghue wrote:
> On 29/12/2022 21:41, Stephan Gerhold wrote:
> > That is still good enough to replace qcom,dp-manual-pullup though.
> 
> But there's no requirement to tie USB_IN_x high if VBUS is not connected to
> it.
> 

I've yet to find any device where USB_IN is not connected in a usable way.

But as I said I leave it up to you - it would be nice to have a proper
solution for devices where VBUS state cannot be determined at all. Those
devices should be rare though so if &pm8916_usbin works in your case
maybe the time would be better invested into other open problems right
now. :)

Thanks,
Stephan