[PATCH v4 0/4] i2c: adv748x: add support for CSI-2 TXA to work in 1-, 2- and 4-lane mode

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Hi,

This series allows the TXA CSI-2 transmitter of the adv748x to function
in 1-, 2- and 4- lane mode. Currently the driver fixes the hardware in
4-lane mode. The driver looks at the standard DT property 'data-lanes'
to determine which mode it should operate in.

Patch 1/4 lists the 'data-lanes' DT property as mandatory for endpoints
describing the CSI-2 transmitters. Patch 2/4 refactors the
initialization sequence of the adv748x to be able to reuse more code.
Patch 3/4 adds the DT parsing and storing of the number of lanes. Patch
4/4 merges the TXA and TXB power up/down procedure while also taking the
configurable number of lanes into account.

The series is based on the latest media-tree master and is tested on
Renesas M3-N in 1-, 2- and 4- lane mode.

Niklas Söderlund (4):
  dt-bindings: adv748x: make data-lanes property mandatory for CSI-2
    endpoints
  i2c: adv748x: reuse power up sequence when initializing CSI-2
  i2c: adv748x: store number of CSI-2 lanes described in device tree
  i2c: adv748x: configure number of lanes used for TXA CSI-2 transmitter

 .../devicetree/bindings/media/i2c/adv748x.txt |  11 +-
 drivers/media/i2c/adv748x/adv748x-core.c      | 235 ++++++++++--------
 drivers/media/i2c/adv748x/adv748x.h           |   1 +
 3 files changed, 142 insertions(+), 105 deletions(-)

-- 
2.19.1




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