Files
kernel_common_drivers/include/linux
Sunny Luo 1c7898f1ca spicc: split spi transfer to enhance the transmission efficiency [1/1]
PD#SWPL-240228

Problem:
PIO is applied for spi transfer of 8/16/32 bits_per_word, which is too
inefficient for long data.

Solution:
Split a spi transfer into one dma transfer and a pio transfer, and maintain
the validity of bits_per_word and big/little endian if possible.

Verify:
T5M AY301, SM1

Change-Id: I66b4777dbab521ee9951f3c75309195f2a4b4118
Signed-off-by: Sunny Luo <sunny.luo@amlogic.com>
2026-01-17 13:21:49 -08:00
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