linux-kernel - Re: [PATCH v4 4/5] platform/chrome: cros_ec_typec: Add Displayport Alternatemode 2.1 Support

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Message-ID: <ZRHfNoiDazz1ZDtD@smile.fi.intel.com>
Date:   Mon, 25 Sep 2023 22:27:50 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Patel, Utkarsh H" <utkarsh.h.patel@...el.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "heikki.krogerus@...ux.intel.com" <heikki.krogerus@...ux.intel.com>,
        "pmalani@...omium.org" <pmalani@...omium.org>,
        "chrome-platform@...ts.linux.dev" <chrome-platform@...ts.linux.dev>,
        "bleung@...omium.org" <bleung@...omium.org>
Subject: Re: [PATCH v4 4/5] platform/chrome: cros_ec_typec: Add Displayport
 Alternatemode 2.1 Support

On Mon, Sep 25, 2023 at 03:54:40PM +0000, Patel, Utkarsh H wrote:

...

> > > +	/**
> > 
> > Are you sure?
> > 
> > > +	 * Get cable VDO for thunderbolt cables and cables with DPSID but
> > does not
> > > +	 * support DPAM2.1.
> > > +	 */
> > 
> Yes, there are TBT3 cables which advertise DPSID but does not provide any DP
> capabilities in the DP discover mode VDO but does support UHBR.  In that
> case, need to use TBTSID and use capabilities from TBT discover mode VDO.

My comment was against the style of the comment, not about content.

...

> > You can also make it a bit more readable with (use better names if you think it's
> > needed)
> > 
> > 	u32 signalling = 0;
> > 	u32 cable_type = 0;
> 
> In v2 version of this patch I had them but there was feedback to remove extra
> variables and use them inline. 

OK!

-- 
With Best Regards,
Andy Shevchenko