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arm64: dts: ti: k3-am642-hummingboard-t: correct rs485 rts polarity

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The RS485 transceiver RE (Receiver enable) and DE (Driver enable) are
shorted and connected to both RTS/CTS of the SoC UART.
RE is active-low, DE is active-high.

Remove the "rs485-rts-active-low" flag to match RTS polarity with DE,
and fix communication in both transmit and receive directions.

Fixes: d60483faf9 ("arm64: dts: add description for solidrun am642 som and evaluation board")
Signed-off-by: Josua Mayer <josua@solid-run.com>
Link: https://lore.kernel.org/r/20240504-ti-rs485-rts-v1-1-e88ef1c96f34@solid-run.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Josua Mayer 2024-05-04 13:35:54 +02:00 committed by Vignesh Raghavendra
parent f3841b6a22
commit 9dcc0e1065
1 changed files with 0 additions and 1 deletions
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arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dts
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@ -282,7 +282,6 @@
pinctrl-names = "default";
pinctrl-0 = <&main_uart3_default_pins>;
uart-has-rtscts;
rs485-rts-active-low;
linux,rs485-enabled-at-boot-time;
status = "okay";
};