[PATCH v3 0/2] ARM: MXC: mxc_nand: support i.MX21
Ivo Clarysse
ivo.clarysse at gmail.com
Thu Apr 8 10:13:27 EDT 2010
Allow mxc_nand.c to function on i.MX21 SoCs, since:
1) On i.MX21, if the NFC_INT_MASK bit in NFC_CONFIG1 is set, the NFC_INT
bit of NFC_CONFIG2 always reads out zero, even if an operation is
completed.
2) On i.MX21, sending a RESET command to the NAND flash controller does
not trigger an interrupt, nor does it cause the NFC_INT bit of
NFC_CONFIG2 to get set.
3) After reset is performed, NFC registers are again in their
default values.
This patch series:
- (Re-)sets all NFC registers after reset
- Uses enable_irq / disable_irq_nosync instead of NFC_INT_MASK
to mask NFC interrupts (allowing NFC_CONFIG2:NFC_INT to used on i.MX21)
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