9 Dec
2010
9 Dec
'10
4:55 p.m.
On Dec 2, 2010, at 11:43 AM, Peter Tyser wrote:
From: John Schmoller jschmoller@xes-inc.com
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 jschmoller@xes-inc.com Signed-off-by: Peter Tyser ptyser@xes-inc.com
drivers/mtd/nand/fsl_upm.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
applied to 85xx
- k