Hi, This patchset aims at fixing a few minor bugs, and improving performances of NAND accesses going through the sunxi NAND controller.
Note that patch 5 exports functions provided by the core which are needed in patch 6 to still support raw OOB accesses. Other patches are just fixes or improvements only touching the sunxi driver itself. Here are the main improvements: - queue CLE/ALE requests instead of forcing the controller to issue each cmd and address cycle separately - benefit from ECC correction on protected OOB bytes - use polling instead of interrupt-based waiting (avoid scheduling overhead for short wait period) I'm preparing another series based on this one to add page operations and DMA support, which, according to my first tests will bring a huge speed improvement (at least x2 on read accesses, and even more when ONFI timing mode > 0 is used). Stay tuned. Best Regards, Boris Boris Brezillon (16): mtd: nand: sunxi: fix call order in sunxi_nand_chip_init() mtd: nand: sunxi: fix clk rate calculation mtd: nand: sunxi: fix EDO mode selection mtd: nand: sunxi: adapt clk_rate to tWB, tADL, tWHR and tRHW timings mtd: nand: export default read/write oob functions mtd: nand: sunxi: implement ->read_oob()/->write_oob() mtd: nand: sunxi: implement ->read_subpage() mtd: nand: sunxi: improve ->cmd_ctrl() function mtd: nand: sunxi: let the NAND controller control the CE line mtd: nand: sunxi: fix the NFC_ECC_ERR_CNT() macro mtd: nand: sunxi: fix NFC_CTL setting mtd: nand: sunxi: disable clks on device removal mtd: nand: enable ECC pipelining mtd: nand: sunxi: fix ->dev_ready() implementation mtd: nand: sunxi: make use of readl_poll_timeout() mtd: nand: sunxi: poll for events instead of using interrupts drivers/mtd/nand/nand_base.c | 18 +-- drivers/mtd/nand/sunxi_nand.c | 293 ++++++++++++++++++++++++++++++------------ include/linux/mtd/nand.h | 14 ++ 3 files changed, 233 insertions(+), 92 deletions(-) -- 2.1.4