linux-kernel - Re: [1/2] dt-bindings: phy: Add stingray usb phy documentation

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Message-ID: <20180814015416.GA29046@jc-sabre>
Date:   Mon, 13 Aug 2018 18:54:17 -0700
From:   Jayachandran C <jnair@...iumnetworks.com>
To:     Srinath Mannam <srinath.mannam@...adcom.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kishon Vijay Abraham I <kishon@...com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [1/2] dt-bindings: phy: Add stingray usb phy documentation

Hi Srinath, Ray,

On Fri, Jul 07, 2017 at 06:37:04PM +0530, Srinath Mannam wrote:
> Add DT binding document for stingray usb phy driver.
> 
> Signed-off-by: Srinath Mannam <srinath.mannam@...adcom.com>
> Reviewed-by: Ray Jui <ray.jui@...adcom.com>
> Acked-by: Rob Herring <robh@...nel.org>

The Broadcom Vulcan chip (now Cavium ThunderX2) uses the same USB PHY
from what I understand. Our hardware team reports that there are some
failures seen without the a custom PHY driver.

Do you require this PHY driver on regular operation on Stingray? Or is
this for some specific functionality? I am asking since the issue
reported here is on switching between a USB 3.0 and USB 2.0 devices.

Any plans on submitting this driver again?

Thanks,
JC