zephyr/drivers/spi
Michael Hope e68287dd90 drivers: spi: fix the fast path on the SAM0 driver
To keep the bus fully loaded, the SAM0 has a fast path that recognises
special cases like TX only, RX only, or TX/RX of the same size.
Commit #ea2431f32f7 accidentally disabled this.

This increases the utilisation from around 30 % to around 90 % at 48
MHz.

Signed-off-by: Michael Hope <mlhx@google.com>
2020-07-06 10:02:14 -04:00
..
CMakeLists.txt
Kconfig
Kconfig.cc13xx_cc26xx
Kconfig.dw
Kconfig.gecko
Kconfig.litex
Kconfig.mcux_dspi
Kconfig.mcux_flexcomm
Kconfig.mcux_lpspi
Kconfig.nrfx
Kconfig.oc_simple
Kconfig.rv32m1_lpspi
Kconfig.sam
Kconfig.sam0
Kconfig.sifive
Kconfig.stm32
Kconfig.xec_qmspi
spi_cc13xx_cc26xx.c
spi_context.h
spi_dw_regs.h
spi_dw.c
spi_dw.h
spi_gecko.c
spi_handlers.c
spi_litespi.c
spi_litespi.h
spi_ll_stm32.c
spi_ll_stm32.h
spi_mcux_dspi.c
spi_mcux_flexcomm.c
spi_mcux_lpspi.c
spi_nrfx_spi.c
spi_nrfx_spim.c
spi_nrfx_spis.c
spi_oc_simple.c
spi_oc_simple.h
spi_rv32m1_lpspi.c
spi_sam.c
spi_sam0.c
spi_sifive.c
spi_sifive.h
spi_xec_qmspi.c