memory: emif: add interrupt and temperature handling

Add an ISR for EMIF that:
	1. reports details of access errors
	2. takes action on thermal events

Also clear all interrupts on shut-down. Pending IRQs
may casue problems during warm-reset.

Temperature handling:
EMIF can be configured to poll the temperature level
of an LPDDR2 device from the MR4 mode register in the
device. EMIF generates an interrupt whenever it identifies
a temperature level change between two consecutive pollings.

Some of the timing parameters need to be de-rated at high
temperatures. The interrupt handler takes care of doing
this and also takes care of going back to nominal settings
when temperature falls back to nominal levels.

Signed-off-by: Aneesh V <[email protected]>
Reviewed-by: Santosh Shilimkar <[email protected]>
Reviewed-by: Benoit Cousson <[email protected]>
[[email protected]: Moved to drivers/memory from drivers/misc]
Signed-off-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions