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1# SPDX-License-Identifier: GPL-2.0-only2menuconfig MTD_ONENAND3 tristate "OneNAND Device Support"4 depends on HAS_IOMEM5 help6 This enables support for accessing all type of OneNAND flash7 devices.8 9if MTD_ONENAND10 11config MTD_ONENAND_VERIFY_WRITE12 bool "Verify OneNAND page writes"13 help14 This adds an extra check when data is written to the flash. The15 OneNAND flash device internally checks only bits transitioning16 from 1 to 0. There is a rare possibility that even though the17 device thinks the write was successful, a bit could have been18 flipped accidentally due to device wear or something else.19 20config MTD_ONENAND_GENERIC21 tristate "OneNAND Flash device via platform device driver"22 help23 Support for OneNAND flash via platform device driver.24 25config MTD_ONENAND_OMAP226 tristate "OneNAND on OMAP2/OMAP3 support"27 depends on ARCH_OMAP2 || ARCH_OMAP3 || (COMPILE_TEST && ARM)28 depends on OF29 depends on OMAP_GPMC30 help31 Support for a OneNAND flash device connected to an OMAP2/OMAP3 SoC32 via the GPMC memory controller.33 Enable dmaengine and gpiolib for better performance.34 35config MTD_ONENAND_SAMSUNG36 tristate "OneNAND on Samsung SOC controller support"37 depends on ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST38 help39 Support for a OneNAND flash device connected to Samsung S3C64XX40 (using command mapping method) and S5PC110/S5PC210 (using generic41 OneNAND method) SoCs.42 Choose Y here only if you build for such Samsung SoC.43 44config MTD_ONENAND_OTP45 bool "OneNAND OTP Support"46 help47 One Block of the NAND Flash Array memory is reserved as48 a One-Time Programmable Block memory area.49 Also, 1st Block of NAND Flash Array can be used as OTP.50 51 The OTP block can be read, programmed and locked using the same52 operations as any other NAND Flash Array memory block.53 OTP block cannot be erased.54 55 OTP block is fully-guaranteed to be a valid block.56 57config MTD_ONENAND_2X_PROGRAM58 bool "OneNAND 2X program support"59 help60 The 2X Program is an extension of Program Operation.61 Since the device is equipped with two DataRAMs, and two-plane NAND62 Flash memory array, these two component enables simultaneous program63 of 4KiB. Plane1 has only even blocks such as block0, block2, block464 while Plane2 has only odd blocks such as block1, block3, block5.65 So MTD regards it as 4KiB page size and 256KiB block size66 67 Now the following chips support it. (KFXXX16Q2M)68 Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,69 Mux: KFM2G16Q2M, KFN4G16Q2M,70 71 And more recent chips72 73endif # MTD_ONENAND74