18 Apr
2012
18 Apr
'12
5:34 a.m.
On Tuesday 17 April 2012 19:40:08 Graeme Russ wrote:
On Wed, Apr 18, 2012 at 2:11 AM, ANDY KENNEDY wrote: But you fall into the trap of thinking that driver porting from Linux is trivial - I doubt this is the case as you do not have the feature rich kernel API (locks, mutexes, memory management, etc)
it's good that you don't have that cruft :). i've also found that many Blackfin linux drivers utilize IRQs/DMA heavily while the u-boot driver does polling/register banging. sometimes this can make a huge difference to the code base, as well as hit a completely different set of issues (such as hardware or documentation bugs). -mike