ARM: dts: imx7-mba7: enable RS485 on UART7

The UART7 interface is connected to a full-duplex RS485 transceiver.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx7-mba7.dtsi b/arch/arm/boot/dts/imx7-mba7.dtsi
index 9cfaf0a911002045c83677e5980b70bb437c2904..ea9f0a4ac4b510a2113c63c6b1a2bad3657cc64d 100644 (file)
--- a/arch/arm/boot/dts/imx7-mba7.dtsi
+++ b/arch/arm/boot/dts/imx7-mba7.dtsi
@@ -561,6 +561,9 @@
        assigned-clocks = <&clks IMX7D_UART7_ROOT_SRC>;
        assigned-clock-parents = <&clks IMX7D_OSC_24M_CLK>;
        uart-has-rtscts;
+       linux,rs485-enabled-at-boot-time;
+       rs485-rts-active-low;
+       rs485-rx-during-tx;
        status = "okay";
 };