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Subject[PATCH 0/4] switch arc-uart to devicetree based probing

As part of converting ARC Port to devicetree infrastructure, the following
series converts the arc-uart driver to DT.

* The first patch is a bug-fix which showed up in the process as DT based
platform devices by default have -ve id
* Next two prepare the driver for forthcoming DT changes.
* Last one contains the DT bindings and driver using those.

Couple of points worth mentioning:
* The earlyprintk portion of driver still relies on static platform data
we would need some earlyprintk handling in of_fdt_* to clean it up properly
* Two of the three platform data instances are now retrieved from DT.
However one still needs to be dynamically passed by platform (using
of_dev_auxdata) as we want to run same image in simulator and hardware

Tested on in-works ARC 3.8 port.

P.S. Greg, can this be treated as a bug-fix for 3.8


Vineet Gupta (4):
serial/arc-uart: Don't index with -ve platform_device->id
serial/arc-uart: split probe from probe_earlyprintk
serial/arc-uart: platform_data order changed
serial/arc-uart: switch to devicetree based probing

.../devicetree/bindings/tty/serial/arc-uart.txt | 26 ++++++
drivers/tty/serial/arc_uart.c | 95 ++++++++++++++------
2 files changed, 94 insertions(+), 27 deletions(-)
create mode 100644 Documentation/devicetree/bindings/tty/serial/arc-uart.txt


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