linux-kernel - Re: [PATCH v2 RESEND] usb: dwc3: core: Fix ULPI PHYs and prevent phy_get/ulpi

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Date:   Thu, 15 Nov 2018 10:09:05 +0200
From:   Felipe Balbi <balbi@...nel.org>
To:     Todor Tomov <todor.tomov@...aro.org>,
        Roger Quadros <rogerq@...com>, linux-usb@...r.kernel.org
Cc:     vigneshr@...com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org,
        "linux-stable # \= v4 . 13" <stable@...r.kernel.org>
Subject: Re: [PATCH v2 RESEND] usb: dwc3: core: Fix ULPI PHYs and prevent phy_get/ulpi_init during suspend/resume


Hi,

Todor Tomov <todor.tomov@...aro.org> writes:

> Hello,
>
> After I apply this patch on 4.14 (or receive it with 4.14.70) I see a regression with
> the Qualcomm QUSB2 phy driver. I'm testing on a Dragonboard 820c.
> In boot log I get:
>
> [    4.525502] phy phy-7412000.phy.6: QUSB2PHY pll lock failed: status reg = 0
> [    4.529232] phy phy-7412000.phy.6: phy init failed --> -16
> [    4.536170] dwc3 7600000.dwc3: failed to initialize core
> [    4.541743] dwc3: probe of 7600000.dwc3 failed with error -16
> [    4.549979] phy phy-7411000.phy.5: QUSB2PHY pll lock failed: status reg = 0
> [    4.552843] phy phy-7411000.phy.5: phy init failed --> -16
> [    4.559606] dwc3 6a00000.dwc3: failed to initialize core
> [    4.565181] dwc3: probe of 6a00000.dwc3 failed with error -16
>
> I can provide a full log if needed.

please do. Also, try mainline and let us know if the problem
persists. Why do you get -EBUSY from the PHY driver?

- 
balbi