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authorBoris Brezillon <boris.brezillon@bootlin.com>2018-02-18 17:05:16 +0100
committerBoris Brezillon <boris.brezillon@bootlin.com>2018-03-15 15:40:37 +0100
commit26777d37216c976cf6fd196700133a38aa2c4b0f (patch)
tree73199fbe5fba118d48421b21bfdb110d21c03532 /drivers/mtd/nand/onenand/Kconfig
parent801492c508f617d5bdc383b98b4a49d7de90c154 (diff)
mtd: Move onenand code base to drivers/mtd/nand/onenand
Move onenand code base to the drivers/mtd/nand directory in the hope that someday someone will patch it to use the generic NAND helpers. If it never happens, at least we'll have all NAND related support in a single directory and not spread over the drivers/mtd/ directory. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Diffstat (limited to 'drivers/mtd/nand/onenand/Kconfig')
-rw-r--r--drivers/mtd/nand/onenand/Kconfig71
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/mtd/nand/onenand/Kconfig b/drivers/mtd/nand/onenand/Kconfig
new file mode 100644
index 000000000000..9dc15748947b
--- /dev/null
+++ b/drivers/mtd/nand/onenand/Kconfig
@@ -0,0 +1,71 @@
+menuconfig MTD_ONENAND
+ tristate "OneNAND Device Support"
+ depends on MTD
+ depends on HAS_IOMEM
+ help
+ This enables support for accessing all type of OneNAND flash
+ devices.
+
+if MTD_ONENAND
+
+config MTD_ONENAND_VERIFY_WRITE
+ bool "Verify OneNAND page writes"
+ help
+ This adds an extra check when data is written to the flash. The
+ OneNAND flash device internally checks only bits transitioning
+ from 1 to 0. There is a rare possibility that even though the
+ device thinks the write was successful, a bit could have been
+ flipped accidentally due to device wear or something else.
+
+config MTD_ONENAND_GENERIC
+ tristate "OneNAND Flash device via platform device driver"
+ help
+ Support for OneNAND flash via platform device driver.
+
+config MTD_ONENAND_OMAP2
+ tristate "OneNAND on OMAP2/OMAP3 support"
+ depends on ARCH_OMAP2 || ARCH_OMAP3
+ depends on OF || COMPILE_TEST
+ help
+ Support for a OneNAND flash device connected to an OMAP2/OMAP3 SoC
+ via the GPMC memory controller.
+ Enable dmaengine and gpiolib for better performance.
+
+config MTD_ONENAND_SAMSUNG
+ tristate "OneNAND on Samsung SOC controller support"
+ depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS4
+ help
+ Support for a OneNAND flash device connected to an Samsung SOC.
+ S3C64XX uses command mapping method.
+ S5PC110/S5PC210 use generic OneNAND method.
+
+config MTD_ONENAND_OTP
+ bool "OneNAND OTP Support"
+ help
+ One Block of the NAND Flash Array memory is reserved as
+ a One-Time Programmable Block memory area.
+ Also, 1st Block of NAND Flash Array can be used as OTP.
+
+ The OTP block can be read, programmed and locked using the same
+ operations as any other NAND Flash Array memory block.
+ OTP block cannot be erased.
+
+ OTP block is fully-guaranteed to be a valid block.
+
+config MTD_ONENAND_2X_PROGRAM
+ bool "OneNAND 2X program support"
+ help
+ The 2X Program is an extension of Program Operation.
+ Since the device is equipped with two DataRAMs, and two-plane NAND
+ Flash memory array, these two component enables simultaneous program
+ of 4KiB. Plane1 has only even blocks such as block0, block2, block4
+ while Plane2 has only odd blocks such as block1, block3, block5.
+ So MTD regards it as 4KiB page size and 256KiB block size
+
+ Now the following chips support it. (KFXXX16Q2M)
+ Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,
+ Mux: KFM2G16Q2M, KFN4G16Q2M,
+
+ And more recent chips
+
+endif # MTD_ONENAND