diff options
| author | John Schmoller <[email protected]> | 2010-12-02 11:43:10 -0600 |
|---|---|---|
| committer | Kumar Gala <[email protected]> | 2010-12-13 09:32:15 -0600 |
| commit | 9fd84915a92058b775fcc8fad4ab4e59fe51cf17 (patch) | |
| tree | 4c08894e72fa0a94d71365391ac9d8db226795f6 /include/linux | |
| parent | 72c96a6802d9b1c949785d1d152f8bc8666c753d (diff) | |
fsl_upm: Add MxMR/MDR synchronization
According to Freescale reference manuals (eg section "13.4.4.2
Programming the UPMs" of the P4080 Reference Manual):
"Since the result of any update to the MxMR/MDR register must be in
effect before the dummy read or write to the UPM region, a write to
MxMR/MDR should be followed immediately by a read of MxMR/MDR."
The UPM on a custom P4080-based board did not work without performing
a read of MxMR/MDR after a write.
Signed-off-by: John Schmoller <[email protected]>
Signed-off-by: Peter Tyser <[email protected]>
Acked-by: Scott Wood <[email protected]>
Signed-off-by: Kumar Gala <[email protected]>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions