From 05d8a019eb057d14cdf9483318a7ee8b35a69cda Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Mon, 8 Mar 2021 16:55:02 +0200 Subject: spi: docs: update info about 'delay_usecs' The 'delay_usecs' field is no longer present on the spi_transfer struct. This change updates the doc to mention the usage of the (relatively) new 'delay' field. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20210308145502.1075689-11-aardelean@deviqon.com Signed-off-by: Mark Brown --- Documentation/spi/spi-summary.rst | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'Documentation/spi') diff --git a/Documentation/spi/spi-summary.rst b/Documentation/spi/spi-summary.rst index f1daffe10d78..d4239025461d 100644 --- a/Documentation/spi/spi-summary.rst +++ b/Documentation/spi/spi-summary.rst @@ -411,8 +411,11 @@ any more such messages. duplex (one pointer is NULL) transfers; + optionally defining short delays after transfers ... using - the spi_transfer.delay_usecs setting (this delay can be the - only protocol effect, if the buffer length is zero); + the spi_transfer.delay.value setting (this delay can be the + only protocol effect, if the buffer length is zero) ... + when specifying this delay the default spi_transfer.delay.unit + is microseconds, however this can be adjusted to clock cycles + or nanoseconds if needed; + whether the chipselect becomes inactive after a transfer and any delay ... by using the spi_transfer.cs_change flag; -- cgit v1.2.3