[PATCH 0/2] drivers/spi/airoha_snfi_spi: add support of dual/quad wires spi modes

[Mikhail Kshevetskiy]

This patch series adds support of 2-wire and 4-wire spi modes. It speeds
up flash read/write by 2 (or 4) times on the corresponding hardware.

Only 2-wire mode has been tested so far. It works fine with en7523/an7581
chips.

PS: We have dma support for reading/loading spi-nand pages. The patch is
undergoing internal review for NDA violations. If everything will be OK,
we will send it soon.

Mikhail Kshevetskiy (2):
  drivers/spi/airoha_snfi_spi: remove unnecessary operation
    adjust_op_size
  drivers/spi/airoha_snfi_spi: add support of dual/quad wires spi modes

 drivers/spi/airoha_snfi_spi.c | 131 ++++++++++++++++++++++------------
 1 file changed, 85 insertions(+), 46 deletions(-)

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2.47.2