UART1 is connected to the bluetooth part of RTL8723BS WiFi/BT combo card
on iNet D978 Rev2 board.
Enable the UART1 to make it possible to use the modified hciattach by
Realtek to drive the BT part of RTL8723BS.
On the board no r_uart pins are found now (the onboard RX/TX pins are
wired to PF2/PF4, which is muxed with mmc0), so also disabled it.
Signed-off-by: Icenowy Zheng <redacted>
---
arch/arm/boot/dts/sun8i-a23-a33.dtsi | 14 ++++++++++++++
arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts | 20 ++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/arch/arm/boot/dts/sun8i-a23-a33.dtsi b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
index 7e05e09..c340885 100644
--- a/arch/arm/boot/dts/sun8i-a23-a33.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23-a33.dtsi
@@ -361,6 +361,20 @@
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};
+ uart1_pins_a: uart1 at 0 {
+ allwinner,pins = "PG6", "PG7";
+ allwinner,function = "uart1";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
+
+ uart1_pins_cts_rts_a: uart1-cts-rts at 0 {
+ allwinner,pins = "PG8", "PG9";
+ allwinner,function = "uart1";
+ allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+ allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+ };
+
mmc0_pins_a: mmc0 at 0 {
allwinner,pins = "PF0", "PF1", "PF2",
"PF3", "PF4", "PF5";diff --git a/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts b/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts
index 0f52cd9..fb46655 100644
--- a/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts
+++ b/arch/arm/boot/dts/sun8i-a33-inet-d978-rev2.dts
@@ -49,6 +49,15 @@
model = "INet-D978 Rev 02";
compatible = "primux,inet-d978-rev2", "allwinner,sun8i-a33";
+ aliases {
+ serial0 = &uart1;
+ };
+
+ chosen {
+ /* Delete debug UART as serial0 is the UART for bluetooth */
+ /delete-property/stdout-path;
+ };
+
leds {
compatible = "gpio-leds";
pinctrl-names = "default";@@ -86,3 +95,14 @@
allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
};
};
+
+&r_uart {
+ status = "disabled";
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins_a>,
+ <&uart1_pins_cts_rts_a>;
+ status = "okay";
+};--
2.9.3