From: Maxime Ripard <maxime.ripard@bootlin.com>
To: sakari.ailus@iki.fi
Cc: Kishon Vijay Abraham I <kishon@ti.com>,
Boris Brezillon <boris.brezillon@bootlin.com>,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-media@vger.kernel.org,
Archit Taneja <architt@codeaurora.org>,
Andrzej Hajda <a.hajda@samsung.com>, Chen-Yu Tsai <wens@csie.org>,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
Krzysztof Witos <kwitos@cadence.com>,
Rafal Ciepiela <rafalc@cadence.com>
Subject: Re: [PATCH v3 03/10] phy: Add MIPI D-PHY configuration options
Date: Wed, 19 Dec 2018 16:40:40 +0100 [thread overview]
Message-ID: <20181219154040.k424xkzz3xap6462@flea> (raw)
In-Reply-To: <20181217202039.zhsxozdw7dlc3xdj@valkosipuli.retiisi.org.uk>
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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:
> > Hi Sakari,
> >
> > Thanks for your feedback.
> >
> > On Thu, Dec 13, 2018 at 10:49:28PM +0200, sakari.ailus@iki.fi wrote:
> > > > + /**
> > > > + * @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
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next prev parent reply other threads:[~2018-12-19 15:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-07 13:55 [PATCH v3 00/10] phy: Add configuration interface for MIPI D-PHY devices Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 01/10] phy: Add MIPI D-PHY mode Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 02/10] phy: Add configuration interface Maxime Ripard
2018-12-13 20:42 ` sakari.ailus
2018-12-07 13:55 ` [PATCH v3 03/10] phy: Add MIPI D-PHY configuration options Maxime Ripard
2018-12-13 20:49 ` sakari.ailus
2018-12-17 15:49 ` Maxime Ripard
2018-12-17 20:20 ` sakari.ailus
2018-12-19 15:40 ` Maxime Ripard [this message]
2018-12-13 20:54 ` sakari.ailus
2018-12-13 20:55 ` sakari.ailus
2018-12-07 13:55 ` [PATCH v3 04/10] phy: dphy: Add configuration helpers Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 05/10] sun6i: dsi: Convert to generic phy handling Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 06/10] phy: Move Allwinner A31 D-PHY driver to drivers/phy/ Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 07/10] drm/bridge: cdns: Separate DSI and D-PHY configuration Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 08/10] dt-bindings: phy: Move the Cadence D-PHY bindings Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 09/10] phy: Add Cadence D-PHY support Maxime Ripard
2018-12-07 13:55 ` [PATCH v3 10/10] drm/bridge: cdns: Convert to phy framework Maxime Ripard
2018-12-09 4:37 ` kbuild test robot
2018-12-20 10:52 ` kbuild test robot
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