* MPC8313 NAND driver limitation
@ 2009-01-15 15:49 Sai Amruta
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From: Sai Amruta @ 2009-01-15 15:49 UTC (permalink / raw)
To: linuxppc-dev
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Hi,
System details:
Linux: 2.6.26-1
Processor: MPC8313
The current freescale NAND controller driver is using "command completion
(CC)" interrupt from FCM block to know the completion read and write
operations. After issuing NAND read/write operation and before FCM CC
interrupt, access to other Local Bus chip selects will failed. I have found
that it was a limitation with freescale FCM block.
To come across this limitation, i have implemented busy wait loop in driver.
I have spent lot of effort to find root cause, so that i would like to
publish my observations here which may help somebody who is using MPC8313.
--
--Amru
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