diff options
author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2015-10-13 15:01:15 +0300 |
---|---|---|
committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2016-10-28 16:56:55 +0200 |
commit | e1c36aecd8c5ad580595da58e180b06195df5f00 (patch) | |
tree | 142f543da79ab2090b895e0e1913e0d7aec821c8 /src/mainboard/emulation/qemu-power8 | |
parent | 78f73353a3c0b7e3e59d0372f02dc1c37b226ac4 (diff) |
pcengines/apu1: Add RS485 configuration
In RS485 mode RTS line acts as a transceiver direction control.
The datasheet is not very clear about the polarity but register setting
here is tested to drive nRTS line high when transmitting.
Also note revision of B of the super-IO has errata and 8N1 setting does
not work properly, you would need revision C of the chip assembled to
fix this.
Change-Id: I705fe0c5a5f8369b0a9358a64c74500238b5c4ba
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/14998
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/mainboard/emulation/qemu-power8')
0 files changed, 0 insertions, 0 deletions