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

[Neil Armstrong]

From: Jerome Brunet <jbru...@baylibre.com>

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 <jbru...@baylibre.com>
Signed-off-by: Neil Armstrong <narmstr...@baylibre.com>
---
 .../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