Re: [PATCH v3 03/10] phy: Add MIPI D-PHY configuration options

On Mon, Dec 17, 2018 at 10:20:39PM +0200, sakari.ailus@iki.fi wrote:

Hi Maxime,

On Mon, Dec 17, 2018 at 04:49:21PM +0100, Maxime Ripard wrote:

quoted

Hi Sakari,

Thanks for your feedback.

On Thu, Dec 13, 2018 at 10:49:28PM +0200, sakari.ailus@iki.fi wrote:

quoted

quoted

+	/**
+	 * @lanes:
+	 *
+	 * Number of active data lanes used for the transmissions.

Could you add that these are the first "lanes" number of lanes from what
are available?

I'm not quite sure I understood this part though, what did you mean?

A number of lanes are routed between the two devices on hardware, and this
field is specifying how many of them are in use. In order for the bus to
function, both ends need to be in agreement on which of these lanes are
actually being used. The current practice I've seen without exceptions is
that these are the first n lanes.

Ah, right, I get it now, thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com