This short series adds support for SPI inter-word delays and configures the spi-atmel driver to honour the setting. Some SPI slaves are so slow that they are unable to keep up even at the SPI controller's lowest available clock frequency. I have such a configuration where an AVR-based SPI slave is unable to feed the SPI bus fast enough even the SPI master runs at the lowest possible clock speed. Jonas Bonn (2): spi: support inter-word delay requirement for devices spi-atmel: support inter-word delay Documentation/devicetree/bindings/spi/spi-bus.txt | 1 + drivers/spi/spi-atmel.c | 11 ++++++----- drivers/spi/spi.c | 4 ++++ include/linux/spi/spi.h | 1 + 4 files changed, 12 insertions(+), 5 deletions(-) -- 2.19.1