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Alex Smithcomputersforpeace
Alex Smith
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mtd: nand: jz4780: driver for NAND devices on JZ4780 SoCs
Add a driver for NAND devices connected to the NEMC on JZ4780 SoCs, as well as the hardware BCH controller. DMA is not currently implemented. While older 47xx SoCs also have a BCH controller, they are incompatible with the one in the 4780 due to differing register/bit positions, which would make implementing a common driver for them quite messy. Signed-off-by: Alex Smith <alex.smith@imgtec.com> Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> [Brian: fixed a few small mistakes] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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‎drivers/mtd/nand/Kconfig

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@@ -519,6 +519,13 @@ config MTD_NAND_JZ4740
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help
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Enables support for NAND Flash on JZ4740 SoC based boards.
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config MTD_NAND_JZ4780
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tristate "Support for NAND on JZ4780 SoC"
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depends on MACH_JZ4780 && JZ4780_NEMC
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help
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Enables support for NAND Flash connected to the NEMC on JZ4780 SoC
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based boards, using the BCH controller for hardware error correction.
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config MTD_NAND_FSMC
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tristate "Support for NAND on ST Micros FSMC"
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depends on PLAT_SPEAR || ARCH_NOMADIK || ARCH_U8500 || MACH_U300

‎drivers/mtd/nand/Makefile

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@@ -49,6 +49,7 @@ obj-$(CONFIG_MTD_NAND_MPC5121_NFC) += mpc5121_nfc.o
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obj-$(CONFIG_MTD_NAND_VF610_NFC) += vf610_nfc.o
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obj-$(CONFIG_MTD_NAND_RICOH) += r852.o
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obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
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obj-$(CONFIG_MTD_NAND_JZ4780) += jz4780_nand.o jz4780_bch.o
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obj-$(CONFIG_MTD_NAND_GPMI_NAND) += gpmi-nand/
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obj-$(CONFIG_MTD_NAND_XWAY) += xway_nand.o
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obj-$(CONFIG_MTD_NAND_BCM47XXNFLASH) += bcm47xxnflash/

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