lkml.org 
[lkml]   [2019]   [Jan]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/2] spi: support inter-word delays
Date
Resubmission to fix thinko in spi-atmel patch.

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

.../devicetree/bindings/spi/spi-bus.txt | 1 +
drivers/spi/spi-atmel.c | 18 +++++++++++++-----
drivers/spi/spi.c | 4 ++++
include/linux/spi/spi.h | 1 +
4 files changed, 19 insertions(+), 5 deletions(-)

--
2.19.1

\
 
 \ /
  Last update: 2019-01-25 13:25    [W:0.048 / U:0.868 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site