[MTD] [NAND] Blackfin on-chip NAND Flash Controller driver
This is the driver for latest Blackfin on-chip nand flash controller
- use nand_chip and mtd_info common nand driver interface
- provide both PIO and dma operation
- compiled with ezkit bf548 configuration
- use hardware 1-bit ECC
- tested with YAFFS2 and can mount YAFFS2 filesystem as rootfs
ChangeLog from try#1
- use hweight32() instead of count_bits()
- replace bf54x with bf5xx and BF54X with BF5XX
- compare against plat->page_size in 2 cases when enable hardware ECC
ChangeLog from try#2
- passed nand_test suites
- use cpu_relax() instead of busy wait loop
- some coding style issue pointed out by Andrew
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index d3ec309..8f9c3ba 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -91,6 +91,25 @@
This enables the driver for the NAND flash controller on the
AMD/Alchemy 1550 SOC.
+config MTD_NAND_BF5XX
+ tristate "Blackfin on-chip NAND Flash Controller driver"
+ depends on BF54x && MTD_NAND
+ help
+ This enables the Blackfin on-chip NAND flash controller
+
+ No board specific support is done by this driver, each board
+ must advertise a platform_device for the driver to attach.
+
+ This driver can also be built as a module. If so, the module
+ will be called bf5xx-nand.
+
+config MTD_NAND_BF5XX_HWECC
+ bool "BF5XX NAND Hardware ECC"
+ depends on MTD_NAND_BF5XX
+ help
+ Enable the use of the BF5XX's internal ECC generator when
+ using NAND.
+
config MTD_NAND_RTC_FROM4
tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)"
depends on SH_SOLUTION_ENGINE