diff options
| author | Tim Harvey <tharvey@gateworks.com> | 2022-02-14 15:14:21 -0800 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2022-02-21 12:15:38 +0800 |
| commit | 665f7f1ce8a7e121abb289aa6791ad0855a80008 (patch) | |
| tree | c3da40275242d01a2d087e586aba874642549c15 /arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi | |
| parent | a72ba91e5bc78d2b1b4712839399bbc41a629682 (diff) | |
arm64: dts: imx8mm-venice-gw73xx-0x: add dt overlays for serial modes
The imx8mm-venice-gw73xx-0x som+baseboard combination has a multi-protocol
RS-232/RS-485/RS-422 transceiver to an off-board connector which
can be configured in a number of ways via UART and GPIO configuration.
The default configuration per the imx8mm-venice-gw73xx-0x dts is for
UART2 TX/RX and UART4 TX/RX to be available as RS-232:
J15.1 UART2 TX out
J15.2 UART2 RX in
J15.3 UART4 TX out
J15.4 UART4 RX in
J15.5 GND
Add dt overlays to allow additional the modes of operation:
rs232-rts (UART2 RS-232 with RTS/CTS hardware flow control)
J15.1 TX out
J15.2 RX in
J15.3 RTS out
J15.4 CTS in
J15.5 GND
rs485 (UART2 RS-485 half duplex)
J15.1 TXRX-
J15.2 N/C
J15.3 TXRX+
J15.4 N/C
J15.5 GND
rs422 (UART2 RS-422 full duplex)
J15.1 TX-
J15.2 RX+
J15.3 TX+
J15.4 RX-
J15.5 GND
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi')
0 files changed, 0 insertions, 0 deletions