linux-kernel - Re: [PATCH 2/3] dt-bindings: usb: cdns,usb3: Add cdns,phyrst-a-enable property

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Date:   Wed, 2 Sep 2020 22:48:49 +0000
From:   Peter Chen <peter.chen@....com>
To:     Roger Quadros <rogerq@...com>
CC:     "balbi@...nel.org" <balbi@...nel.org>,
        "pawell@...ence.com" <pawell@...ence.com>,
        "kurahul@...ence.com" <kurahul@...ence.com>,
        "nsekhar@...com" <nsekhar@...com>,
        "vigneshr@...com" <vigneshr@...com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH 2/3] dt-bindings: usb: cdns,usb3: Add cdns,phyrst-a-enable
 property

On 20-09-02 16:28:31, Roger Quadros wrote:
> Peter,
> 
> On 27/08/2020 14:14, Peter Chen wrote:
> > On 20-08-25 15:00:58, Roger Quadros wrote:
> > > Controller version 0x0002450D has USB2 PHY RX sensitivity issues
> > > that needs to be worked around by enabling phyrst-a-enable bit
> > > in PHYRST_CFG register.
> > > 
> > > There is no way to distinguish between the controller version
> > > before the device controller is started so we need to add this
> > > DT property.
> > 
> > Maybe you should say "There is no way to know controller version
> > at host mode, but this workaround needs for both host and device
> > mode, so we have to add this DT property", the same for the comments
> > of your driver code patch.
> 
> I will reword it to
> 
> "There is no way to know controller version before device controller
> is started and the workaround needs to be applied for both host and
> device modes, so we add this DT property"
> 

After apply it, feel free add:

Reviewed-by: Peter Chen <peter.chen@....com>

Please apply above for device party commit log as well.

-- 

Thanks,
Peter Chen