[U-Boot] [PATCH] fsl_upm: Add MxMR/MDR synchronization

[Kumar Gala]

On Dec 2, 2010, at 11:43 AM, Peter Tyser wrote:

> From: John Schmoller <jschmoller at 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 at xes-inc.com>
> Signed-off-by: Peter Tyser <ptyser at xes-inc.com>
> ---
> drivers/mtd/nand/fsl_upm.c |    2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)

applied to 85xx

- k