> + { \
> + .val_bits = (width), \
> + .reg_stride = (width) / 8, \
> + .reg_bits = (regbits) + (regalign), \
> + .pad_bits = (regpad), \
> + .max_register = 0xF00, \
> + .cache_type = REGCACHE_NONE,
> \
> + .read_flag_mask = \
> + KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, regbits,
> regpad), \
> + .write_flag_mask = \
> + KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, regbits,
> regpad), \
> + .reg_format_endian = REGMAP_ENDIAN_BIG,
> \
> + .val_format_endian = REGMAP_ENDIAN_BIG
> \
> + }
max_registers for KSZ9477 should be 0x8000.
I found that the SPI access works with these settings:
reg_bits = 32 - 5, val_bits = 8, pad_bits = 5, read_flag_mask = KS_SPIOP_RD <<
5.
I am using this in another driver running in 4.9. Somehow the 8-bit write
causes the
hardware to be in a wrong state. This is a quick change so there may be bugs
in the
driver.
As expected the access speed is a few microseconds slower than before.
