The Allwinner V3 and S3 can use PG6/7 as RX/TX for UART1. Since no other
functions are assigned to those pins, they are a convenient choice for
a debugging or application UART.
This is specific to V3/S3 as the V3s's non-BGA package did not have
those pins.
Signed-off-by: Matteo Scordino <matteo.scord...@gmail.com>
---
arch/arm/boot/dts/sun8i-v3.dtsi | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/boot/dts/sun8i-v3.dtsi b/arch/arm/boot/dts/sun8i-v3.dtsi
index ca4672ed2e02..c279e13583ba 100644
--- a/arch/arm/boot/dts/sun8i-v3.dtsi
+++ b/arch/arm/boot/dts/sun8i-v3.dtsi
@@ -24,4 +24,9 @@
&pio {
compatible = "allwinner,sun8i-v3-pinctrl";
+
+ uart1_pg_pins: uart1-pg-pins {
+ pins = "PG6", "PG7";
+ function = "uart1";
+ };
};
--
2.20.1
