[PATCH 4/4] serial/arc-uart: switch to devicetree based probing

Vineet Gupta Vineet.Gupta1 at synopsys.com
Fri Jan 11 22:55:22 EST 2013


On Friday 11 January 2013 05:03 PM, Arnd Bergmann wrote:
> On Friday 11 January 2013, Vineet Gupta wrote:
>> * DT binding for arc-uart
>> * With alll the bits in place we can now use DT probing.
>>
>> Note that there's a bit of kludge right now because earlyprintk portion
>> of driver can't use the DT infrastrcuture to get resoures/plat_data.
>> This requires some infrastructre changes to of_flat_ framework
>>
>> Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
>> Cc: Grant Likely <grant.likely at secretlab.ca>
>> Cc: Arnd Bergmann <arnd at arndb.de>
>> Cc: linux-serial at vger.kernel.org
>> Cc: Alan Cox <alan at linux.intel.com>
>> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
>> Cc: devicetree-discuss at lists.ozlabs.org
>> Cc: Rob Herring <rob.herring at calxeda.com>
>> Cc: Rob Landley <rob at landley.net>
>> Cc: linux-serial at vger.kernel.org
> Acked-by: Arnd Bergmann <arnd at arndb.de>
>
> Quick question about the name though: is this UART only used
> on ARC, or is it something that synopsys licenses to other
> parties as well? If the latter is true, we might want to 
> add a more generic "compatible" value for those that use
> it on another architecture.

It's not licensed as standalone IP - since its not a standard 8250. It is only
(but actively) used on the internal FPGA flows from ARC days.

Thx,
Vineet

> 	Arnd



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