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| author | Steven Miao <realmz6@gmail.com> | 2011-05-05 08:14:48 +0200 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-05-25 14:24:14 +0200 |
| commit | f9691bb9674b6822ace56370a08c6fc02addf6cb (patch) | |
| tree | 40f9f39d38326c498ea5f3d63cd2c1e059b8bf21 /arch/blackfin/mach-bf548 | |
| parent | Blackfin: fix addr type with bfin_write_{or,and} helpers (diff) | |
| download | linux-f9691bb9674b6822ace56370a08c6fc02addf6cb.tar.xz linux-f9691bb9674b6822ace56370a08c6fc02addf6cb.zip | |
Blackfin: work around anomaly 05000480
Anomaly 05000480 on BF537 rev 0.0, 0.1, 0.2:
Multiple Simultaneous Urgent DMA Requests May Cause DMA System Instability
Suggested Workaround:
Program the DMA Traffic Control Period to a non-zero value. This forces
the DMA block to group accesses together rather than allow arbitration for
each piece of data placed on the internal DMA bus.
Signed-off-by: Steven Miao <realmz6@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-bf548')
0 files changed, 0 insertions, 0 deletions