lkml.org 
[lkml]   [2014]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2] can: xilinx CAN controller support.
On 02/14/2014 10:13 AM, Michal Simek wrote:
>>> That's not entirely truth. If you look at Microblaze then you will see
>>> that Microblaze can be BE and LE.
>>> There is just missing endian detection which we will add to the next version.
>>
>> As far as I know the endianess of the kernel is fixed and known during
>> compile time. Correct me if I'm wrong. So there is no need for a runtime
>> detection of the endianess and so no need for {read,write}_reg function
>> pointers.
>
> Endianess of the kernel is fixed and know during compile time
> but what it is not fixed is endianess of that IP at compile time.
>
> On fpga you can use bridges, partial reconfiguration, etc where
> the only solution which is run-time endian detection via registers.
>
> For example: drivers/block/xsysace.c, drivers/spi/spi-xilinx.c, etc

Okay, now I get it. You can make it more complex then it used to be :D

Marc

--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |

[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2014-02-14 11:01    [W:0.105 / U:0.108 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site