Messages in this thread | | | From | Jonas Bonn <> | Subject | [PATCH v3 0/2] spi: support inter-word delays | Date | Sat, 26 Jan 2019 17:32:18 +0100 |
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Changed in v3: * Drop setting of inter-word delay via device tree
Changed in v2: * Fix atmel-spi driver to not unconditionally set minimal delay if no delay is required (erroneous clamping)
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
drivers/spi/spi-atmel.c | 18 +++++++++++++----- include/linux/spi/spi.h | 3 +++ 2 files changed, 16 insertions(+), 5 deletions(-)
-- 2.19.1
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