diff options
author | Anand Gadiyar <gadiyar@ti.com> | 2010-07-26 16:34:27 -0600 |
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committer | Paul Walmsley <paul@pwsan.com> | 2010-07-26 16:34:27 -0600 |
commit | 25499d9353e8cc6b0cf205684b3ebc535f8b9372 (patch) | |
tree | 2313746d14fd50787286378366616e978120902c /fs/qnx4 | |
parent | b37fa16e78d6f9790462b3181602a26b5af36260 (diff) |
OMAP3: wait on IDLEST after enabling USBTLL fclk
We need to wait on the IDLEST bit after the clocks are enabled
before attempting to access any register.
Currently, the USBTLL i-clock ops uses the clkops_omap2_dflt_wait,
while the USBTLL f-clock ops uses clkops_omap2_dflt. If the
i-clock is enabled first, the clkops_omap2_dflt_wait is
short-circuited as the companion f-clock is not enabled.
This can cause a data abort if the IDLEST has not transitioned,
and we try to access a USBTLL register.
Since the USBTLL i-clock and f-clock could be enabled in any order,
this is a bug. Fix it by changing the clkops for the f-clock.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Diffstat (limited to 'fs/qnx4')
0 files changed, 0 insertions, 0 deletions