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| author | Alexandru Ardelean <aardelean@deviqon.com> | 2021-03-08 15:55:02 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-03-12 15:30:51 +0100 |
| commit | 05d8a019eb057d14cdf9483318a7ee8b35a69cda (patch) | |
| tree | 304d0324574626e80297b996b7266c291f335bef /Documentation/spi/spi-summary.rst | |
| parent | spi: core: remove 'delay_usecs' field from spi_transfer (diff) | |
| download | linux-05d8a019eb057d14cdf9483318a7ee8b35a69cda.tar.xz linux-05d8a019eb057d14cdf9483318a7ee8b35a69cda.zip | |
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 <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210308145502.1075689-11-aardelean@deviqon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/spi/spi-summary.rst | 7 |
1 files changed, 5 insertions, 2 deletions
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; |