Add the driver and dt-binding document for Loongson-1 NAND. And modify nand_read_subpage() to allow subpage read by a single operation. Changes in v6: - Amend Kconfig - Add the dt-binding document - Modify nand_read_subpage() to allow subpage read by a single operation - Add DT support for driver - Use DT data instead of platform data - Remove MAX_ID_SIZE - Remove case NAND_OP_CMD_INSTR in ls1x_nand_set_controller() - Move ECC configuration to ls1x_nand_attach_chip() - Rename variable "nand" to "ls1x" - Rename variable "nc" to "nfc" - Some minor fixes - Link to v5: https://lore.kernel.org/all/20210520224213.7907-1-keguang.zhang@xxxxxxxxx Changes in v5: - Update the driver to fit the raw NAND framework. - Implement exec_op() instead of legacy cmdfunc(). - Use dma_request_chan() instead of dma_request_channel(). - Some minor fixes and cleanups. Changes in v4: - Retrieve the controller from nand_hw_control. Changes in v3: - Replace __raw_readl/__raw_writel with readl/writel. - Split ls1x_nand into two structures: ls1x_nand_chip and ls1x_nand_controller. Changes in v2: - Modify the dependency in Kconfig due to the changes of DMA module. Signed-off-by: Keguang Zhang <keguang.zhang@xxxxxxxxx> --- Keguang Zhang (3): dt-bindings: mtd: Add Loongson-1 NAND Controller mtd: rawnand: Enable monolithic read when reading subpages mtd: rawnand: Add Loongson-1 NAND Controller driver .../devicetree/bindings/mtd/loongson,ls1x-nfc.yaml | 66 ++ drivers/mtd/nand/raw/Kconfig | 7 + drivers/mtd/nand/raw/Makefile | 1 + drivers/mtd/nand/raw/loongson1_nand.c | 748 +++++++++++++++++++++ drivers/mtd/nand/raw/nand_base.c | 5 +- include/linux/mtd/rawnand.h | 5 + 6 files changed, 830 insertions(+), 2 deletions(-) --- base-commit: 084c8e315db34b59d38d06e684b1a0dd07d30287 change-id: 20240316-loongson1-nand-98327d77e0f6 Best regards, -- Keguang Zhang <keguang.zhang@xxxxxxxxx>
