tree d2e582477c7be74c9eec497e2a186b05cfc9af43
parent 7b1868bcba4976726dc45da1eda5ded9b5cb0f5c
author Timur Tabi <timur@freescale.com> 1291403025 -0600
committer Kumar Gala <galak@kernel.crashing.org> 1292256351 -0600

p1022ds: fix switching of DIU/LBC signals

On the P1022, the pins which drive the video display (DIU) are muxed with the
local bus controller (LBC), so if the DIU is active, the pins need to be
temporarily muxed to LBC whenever accessing NOR flash.

The code which handled this transition is checking and changing the wrong
bits in PMUXCR.

Also add a follow-up read after a write to NOR flash if we're going to
mux back to DIU after the write, as described in the P1022 RM.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>