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| author | Baruch Siach <baruch@tkos.co.il> | 2018-06-28 10:25:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-28 15:02:38 +0300 |
| commit | e51e597d9f692cd7d205e3b44bb35ea3b97e7329 (patch) | |
| tree | 314792571aa41514184f9f098b4513ce4f64980a /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | 728e74a46fd4166935f2079b619007eaad98c9a5 (diff) | |
| download | linux-e51e597d9f692cd7d205e3b44bb35ea3b97e7329.tar.xz | |
dt-bindings: serial: imx: clarify rs485 support usage
The i.MX UART peripheral uses the RST_B signal as input, and CTS_B as
output. This is just like the DCE role in RS-232. This is true
regardless of the "DTE mode" setting of this peripheral.
As a result, rs485 support hardware must use the CTS_B signal to control
the RS-485 transceiver. This is in contrast to generic rs485 kernel
code, documentation, and DT property names that consistently refer to
the RTS as transceiver control signal.
Add a note in the DT binding document about that, to reduce the
confusion somewhat.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions