netdev - [PATCH v4 0/8] net: can: Use syscon regmap for TI specific RAMINIT register

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Date:	Fri, 7 Nov 2014 16:49:14 +0200
From:	Roger Quadros <rogerq@...com>
To:	<wg@...ndegger.com>, <mkl@...gutronix.de>
CC:	<wsa@...-dreams.de>, <tony@...mide.com>, <tglx@...utronix.de>,
	<mugunthanvnm@...com>, <george.cherian@...com>, <balbi@...com>,
	<nsekhar@...com>, <nm@...com>,
	<sergei.shtylyov@...entembedded.com>, <linux-omap@...r.kernel.org>,
	<linux-can@...r.kernel.org>, <netdev@...r.kernel.org>,
	Roger Quadros <rogerq@...com>
Subject: [PATCH v4 0/8] net: can: Use syscon regmap for TI specific RAMINIT register

Hi,

Some hardware (TI am43xx) has a buggy RAMINIT DONE mechanism and it might
not always set the DONE bit. This will result in a lockup in c_can_hw_raminit_wait_ti(),
so patch 1 adds a timeout mechanism there.

There is a non compliancy within TI platforms with respect to the
layout of the RAMINIT register. The patches 3 and 4 address this issue
and make a flexible but standard way of defining the RAMINIT hardware register
layout in the device tree. The RAMINIT register is accessed using the syscon
regmap framework.

Patches available at
git@...hub.com:rogerq/linux.git	[for-v3.19/can]

Patches are tested on am335x-evm, am437x-gp-evm and dra7-evm.
Board support files to allow CAN testing on these boards are available at
git@...hub.com:rogerq/linux.git	[for-v3.19/omap-dts-dcan]

Changelog:

v4:
- updated "syscon-raminit" binding to contain the CAN instance id. We no longer
use different compatible ids for multiple CAN IPs on the same SoC. The instance
ID is used instead to locate the start/stop bit positions from driver data.

v3:
- allow driver data to be more than just CAN_ID
- RAMINIT register data moved to driver data instead of device tree file.

v2:
- added "ti" vendor prefix to TI specific raminit properties.
- split DTS changes into a separate series

cheers,
-roger

---
Roger Quadros (8):
  net: can: c_can: Add timeout to c_can_hw_raminit_ti()
  net: can: c_can: Introduce c_can_driver_data structure
  net: can: c_can: Add RAMINIT register information to driver data
  net: can: c_can: Add syscon/regmap RAMINIT mechanism
  net: can: c_can: Add support for START pulse in RAMINIT sequence
  net: can: c_can: Disable pins when CAN interface is down
  net: can: c_can: Add support for TI DRA7 DCAN
  net: can: c_can: Add support for TI am3352 DCAN

 .../devicetree/bindings/net/can/c_can.txt          |   4 +
 drivers/net/can/c_can/c_can.c                      |  20 ++
 drivers/net/can/c_can/c_can.h                      |  23 ++-
 drivers/net/can/c_can/c_can_platform.c             | 217 +++++++++++++++------
 4 files changed, 203 insertions(+), 61 deletions(-)

-- 
1.8.3.2

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