arm64: dts: meson: a1: introduce UART_AO mux definitions

The Amlogic A1 has a UART_AO port, which can be used, for example, for
BT HCI H4 connection.

This patch adds mux definitions for it.

Signed-off-by: Oleg Lyovin <ovlevin@sberdevices.ru>
Signed-off-by: Dmitry Rokosov <ddrokosov@sberdevices.ru>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230823213630.12936-10-ddrokosov@sberdevices.ru
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index fcaeed3791be810479db36c537f7dcd2903d0f27..e2f7c719f9bb584adc5292ead0f04ccea6109447 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -126,6 +126,22 @@
                                        gpio-ranges = <&periphs_pinctrl 0 0 62>;
                                };
 
+                               uart_a_pins: uart-a {
+                                       mux {
+                                               groups = "uart_a_tx",
+                                                        "uart_a_rx";
+                                               function = "uart_a";
+                                       };
+                               };
+
+                               uart_a_cts_rts_pins: uart-a-cts-rts {
+                                       mux {
+                                               groups = "uart_a_cts",
+                                                        "uart_a_rts";
+                                               function = "uart_a";
+                                               bias-pull-down;
+                                       };
+                               };
                        };
 
                        gpio_intc: interrupt-controller@440 {