netdev - [PATCHv4 0/5] Add DT support for fixed PHYs

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Message-Id: <1400249647-4643-1-git-send-email-thomas.petazzoni@free-electrons.com>
Date:	Fri, 16 May 2014 16:14:02 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	devicetree@...r.kernel.org
Cc:	Florian Fainelli <florian@...nwrt.org>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Lior Amsalem <alior@...vell.com>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Christian Gmeiner <christian.gmeiner@...il.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
Subject: [PATCHv4 0/5] Add DT support for fixed PHYs

Subject: Add DT support for fixed PHYs

Hello,

Here is a fourth version of the patch set that adds a Device Tree
binding and the related code to support fixed PHYs. I'm hoping to get
this merged in 3.16.

Changes since v3:

 * Rebased on top of v3.15-rc5

 * In patch "net: phy: decouple PHY id and PHY address in fixed PHY
   driver", changed the PHY ID of fixed PHYs from 0xdeadbeef to 0x0,
   as suggested by Grant Likely.

 * Fixed the !CONFIG_PHY_FIXED case in patch "net: phy: extend fixed
   driver with fixed_phy_register()". Noticed by Florian Fainelli.

 * Added Acked-by from Grant Likely and Florian Fainelli on patch
   "net: phy: extend fixed driver with fixed_phy_register()".

 * Reworked the new fixed-link DT binding to be just a sub-node of the
   Ethernet MAC node, and not a node referenced by the 'phy'
   property. This was requested by Grant Likely.

 * Reworked the code implementing the new DT binding to also make it
   accept the old, single property based, DT binding.

 * Added a patch that actually uses the new fixed link DT binding for
   the Armada XP Matrix board.

Changes since v2:

 * Rebased on top of v3.14-rc1, and re-tested on hardware.

 * Removed the RFC tag, since there seems to be some real interest in
   this feature, and the code has gone through several iterations
   already.

 * The error handling in fixed_phy_register() has been fixed.

Changes since v1:

 * Instead of using a 'fixed-link' property inside the Ethernet device
   DT node, with a fairly cryptic succession of integer values, we now
   use a PHY subnode under the Ethernet device DT node, with explicit
   properties to configure the duplex, speed, pause and other PHY
   properties.

 * The PHY address is automatically allocated by the kernel and no
   longer visible in the Device Tree binding.

 * The PHY device is created directly when the network driver calls
   of_phy_connect_fixed_link(), and associated to the PHY DT node,
   which allows the existing of_phy_connect() function to work,
   without the need to use the deprecated of_phy_connect_fixed_link().

Posts of previous versions:

  RFCv1:   http://www.spinics.net/lists/netdev/msg243253.html
  RFCv2:   http://lists.infradead.org/pipermail/linux-arm-kernel/2013-September/196919.html
  PATCHv3: http://www.spinics.net/lists/netdev/msg273117.html

Thanks,

Thomas

Thomas Petazzoni (5):
  net: phy: decouple PHY id and PHY address in fixed PHY driver
  net: phy: extend fixed driver with fixed_phy_register()
  of: provide a binding for fixed link PHYs
  net: mvneta: add support for fixed links
  ARM: mvebu: use the fixed-link PHY DT binding for the Armada XP Matrix
    board

 .../devicetree/bindings/net/fixed-link.txt         | 31 +++++++++
 arch/arm/boot/dts/armada-xp-matrix.dts             |  4 ++
 drivers/net/ethernet/marvell/mvneta.c              | 19 ++++-
 drivers/net/phy/fixed.c                            | 81 +++++++++++++++++++---
 drivers/of/of_mdio.c                               | 67 ++++++++++++++++++
 include/linux/of_mdio.h                            | 15 ++++
 include/linux/phy_fixed.h                          | 11 +++
 7 files changed, 215 insertions(+), 13 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/fixed-link.txt

-- 
1.9.3

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