linux-kernel - Re: [PATCH v1 3/3] usb: dwc3: gadget: Skip endpoints ep[18]{in,out} on Intel Merrifield

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Message-ID: <20250121235149.tgouwgtm2wgrqrax@synopsys.com>
Date: Tue, 21 Jan 2025 23:51:51 +0000
From: Thinh Nguyen <Thinh.Nguyen@...opsys.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC: Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>, Ferry Toth <fntoth@...il.com>
Subject: Re: [PATCH v1 3/3] usb: dwc3: gadget: Skip endpoints ep[18]{in,out}
 on Intel Merrifield

On Tue, Jan 21, 2025, Thinh Nguyen wrote:
> On Fri, Jan 17, 2025, Andy Shevchenko wrote:
> > On Thu, Jan 16, 2025 at 11:39:42PM +0000, Thinh Nguyen wrote:
> > > On Thu, Jan 16, 2025, Andy Shevchenko wrote:
> > 
> > ...
> > 
> > > > + * Intel Merrifield uses these endpoints for tracing and they shouldn't be used
> > > > + * for normal transfers, we need to skip them.
> > > > + * • 1 High BW Bulk IN (IN#1) (RTIT)
> > > > + * • 1 1KB BW Bulk IN (IN#8) + 1 1KB BW Bulk OUT (Run Control) (OUT#8)
> > > 
> > > Please use regular bullet character and list the endpoint per line.
> > 
> > Which is...?
> > 
> > To my curiosity, what's wrong with the above?
> > 
> 
> Please use a character that we can find on the keyboard (- or * for
> example).
> 
> And why would you want to list them like this:
> 
> 	* Endpoint A
> 	* Endpoint B + Endpoint C
> 
> As oppose to:
> 
> 	* Endpoint A
> 	* Endpoint B
> 	* Endpoint C
> 

Also, please fix the $subject and replace "endpoints ep[18]{in,out}" to
just "reserved endpoints".

BR,
Thinh