spi: rspi: supports 32bytes buffer for DUAL and QUAD

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This patch supports 32bytes of buffer for DUAL and QUAD in QSPI by
Using Transmit/Receive Buffer Data Triggering Number.
In order to improve the DUAL and QUAD's performance of SPI
while transferring data in PIO mode, it sends/receives each 32bytes
data instead of each byte data as current situation.

Signed-off-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Hiep Cao Minh 2016-11-04 17:38:54 +09:00 • committed by Mark Brown

parent 1001354ca3

commit 3be09bec42

1 changed files with 49 additions and 3 deletions

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52

drivers/spi/spi-rspi.c

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