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| author | Thor Thayer <tthayer@opensource.altera.com> | 2016-10-10 16:25:24 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-10-11 12:29:04 +0200 |
| commit | 6b1576aa875347c6454d911a2e001138c2cec7d5 (patch) | |
| tree | ab2efceebe210623e9f54e967cec554dfa32bfb3 /drivers/spi/spi-dw.c | |
| parent | Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/tools', 'spi/t... (diff) | |
| download | linux-6b1576aa875347c6454d911a2e001138c2cec7d5.tar.xz linux-6b1576aa875347c6454d911a2e001138c2cec7d5.zip | |
spi: Add Flag to Enable Slave Select with GPIO Chip Select.
Some SPI masters require slave selection before the transfer
can begin [1]. The SPI framework currently selects the chip using
either 1) the internal CS mechanism or 2) the GPIO CS, but not both.
This patch adds a new master->flags define to indicate both the GPIO
CS and the internal chip select mechanism should be used.
Tested On:
Altera CycloneV development kit
Compile tested for build errors on x86_64 (allyesconfigs)
[1] DesignWare dw_apb_ssi Databook, Version 3.20a (page 39)
Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw.c')
0 files changed, 0 insertions, 0 deletions