1# SPDX-License-Identifier: GPL-2.0-only 2menuconfig MTD_ONENAND 3 tristate "OneNAND Device Support" 4 depends on MTD 5 depends on HAS_IOMEM 6 help 7 This enables support for accessing all type of OneNAND flash 8 devices. 9 10if MTD_ONENAND 11 12config MTD_ONENAND_VERIFY_WRITE 13 bool "Verify OneNAND page writes" 14 help 15 This adds an extra check when data is written to the flash. The 16 OneNAND flash device internally checks only bits transitioning 17 from 1 to 0. There is a rare possibility that even though the 18 device thinks the write was successful, a bit could have been 19 flipped accidentally due to device wear or something else. 20 21config MTD_ONENAND_GENERIC 22 tristate "OneNAND Flash device via platform device driver" 23 help 24 Support for OneNAND flash via platform device driver. 25 26config MTD_ONENAND_OMAP2 27 tristate "OneNAND on OMAP2/OMAP3 support" 28 depends on ARCH_OMAP2 || ARCH_OMAP3 || (COMPILE_TEST && ARM) 29 depends on OF || COMPILE_TEST 30 help 31 Support for a OneNAND flash device connected to an OMAP2/OMAP3 SoC 32 via the GPMC memory controller. 33 Enable dmaengine and gpiolib for better performance. 34 35config MTD_ONENAND_SAMSUNG 36 tristate "OneNAND on Samsung SOC controller support" 37 depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS4 || COMPILE_TEST 38 help 39 Support for a OneNAND flash device connected to an Samsung SOC. 40 S3C64XX uses command mapping method. 41 S5PC110/S5PC210 use generic OneNAND method. 42 43config MTD_ONENAND_OTP 44 bool "OneNAND OTP Support" 45 help 46 One Block of the NAND Flash Array memory is reserved as 47 a One-Time Programmable Block memory area. 48 Also, 1st Block of NAND Flash Array can be used as OTP. 49 50 The OTP block can be read, programmed and locked using the same 51 operations as any other NAND Flash Array memory block. 52 OTP block cannot be erased. 53 54 OTP block is fully-guaranteed to be a valid block. 55 56config MTD_ONENAND_2X_PROGRAM 57 bool "OneNAND 2X program support" 58 help 59 The 2X Program is an extension of Program Operation. 60 Since the device is equipped with two DataRAMs, and two-plane NAND 61 Flash memory array, these two component enables simultaneous program 62 of 4KiB. Plane1 has only even blocks such as block0, block2, block4 63 while Plane2 has only odd blocks such as block1, block3, block5. 64 So MTD regards it as 4KiB page size and 256KiB block size 65 66 Now the following chips support it. (KFXXX16Q2M) 67 Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M, 68 Mux: KFM2G16Q2M, KFN4G16Q2M, 69 70 And more recent chips 71 72endif # MTD_ONENAND 73