[PATCH v1] arm64: dts: exynos: r8s: enable UART interfaces and aliases

From: Denzeel Oliva
Date: Wed Feb 12 2025 - 19:03:24 EST


- usi_uart: Main UART interface, required for debugging or
communication.
- usi_bt_uart: UART interface for Bluetooth connectivity.
- Added serial0 and serial1 aliases for standard UART access.

Signed-off-by: Denzeel Oliva <wachiturroxd150@xxxxxxxxx>
---
arch/arm64/boot/dts/exynos/exynos990-r8s.dts | 23 ++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos990-r8s.dts b/arch/arm64/boot/dts/exynos/exynos990-r8s.dts
index 6bae3c0ec..049b40af2 100644
--- a/arch/arm64/boot/dts/exynos/exynos990-r8s.dts
+++ b/arch/arm64/boot/dts/exynos/exynos990-r8s.dts
@@ -18,6 +18,11 @@ / {
#address-cells = <2>;
#size-cells = <2>;

+ aliases {
+ serial0 = &serial_0;
+ serial1 = &serial_1;
+ };
+
chosen {
#address-cells = <2>;
#size-cells = <2>;
@@ -113,3 +118,21 @@ key_volup: key-volup-pins {
samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
};
};
+
+&usi_uart {
+ samsung,clkreq-on; /* needed for UART mode */
+ status = "okay";
+};
+
+&serial_0 {
+ status = "okay";
+};
+
+&usi_bt_uart {
+ samsung,clkreq-on; /* needed for UART mode */
+ status = "okay";
+};
+
+&serial_1 {
+ status = "okay";
+};
--
2.48.1