[PATCH 4/9] arm64: dts: meson: g12a: add uart_ao_a pinctrl

[Neil Armstrong]

From: Jerome Brunet <jbrunet@xxxxxxxxxxxx>

Add the always on UART pinctrl setting to the g12a soc DT and
use it for the u200 reference design

Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
---
 .../arm64/boot/dts/amlogic/meson-g12a-u200.dts |  2 ++
 arch/arm64/boot/dts/amlogic/meson-g12a.dtsi    | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
index c44dbdddf2cf..f2afd0bf3e28 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts
@@ -25,5 +25,7 @@
 
 &uart_AO {
 	status = "okay";
+	pinctrl-0 = <&uart_ao_a_pins>;
+	pinctrl-names = "default";
 };
 
diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
index c141cc7f6b09..f8f055c49f9a 100644
--- a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi
@@ -177,6 +177,24 @@
 						#gpio-cells = <2>;
 						gpio-ranges = <&ao_pinctrl 0 0 15>;
 					};
+
+					uart_ao_a_pins: uart_a_ao {
+						mux {
+							groups = "uart_ao_a_tx",
+								 "uart_ao_a_rx";
+							function = "uart_ao_a";
+							bias-disable;
+						};
+					};
+
+					uart_ao_a_cts_rts_pins: uart_ao_a_cts_rts {
+						mux {
+							groups = "uart_ao_a_cts",
+								 "uart_ao_a_rts";
+							function = "uart_ao_a";
+							bias-disable;
+						};
+					};
 				};
 			};
 
-- 
2.20.1