[PATCH 1/6] arm64: dts: amlogic: meson-s4: add UART_A node
From: Nick Xie <hidden>
Date: 2026-01-23 02:23:39
Also in:
linux-amlogic, linux-devicetree, lkml
Subsystem:
arm/amlogic meson soc support, the rest · Maintainers:
Neil Armstrong, Kevin Hilman, Linus Torvalds
Add the UART_A node and its related pinctrl definitions to the Meson S4 SoC dtsi. This interface is typically used for Bluetooth communication on boards like the Khadas VIM1S. Signed-off-by: Nick Xie <redacted> --- arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
index dfc0a30a6e61b..b1d66054a6e87 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi@@ -163,6 +163,16 @@ mux { }; }; + a_uart_pins: a_uart { + mux { + groups = "uart_a_tx", + "uart_a_rx", + "uart_a_cts", + "uart_a_rts"; + function = "uart_a"; + }; + }; + i2c0_pins1: i2c0-pins1 { mux { groups = "i2c0_sda",
@@ -814,6 +824,18 @@ mdio0: mdio { }; }; + uart_a: serial@fe078000 { + compatible = "amlogic,meson-s4-uart", + "amlogic,meson-ao-uart"; + reg = <0x0 0xfe078000 0x0 0x18>; + interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>; + clocks = <&xtal>, <&clkc_periphs CLKID_UART_A>, <&xtal>; + clock-names = "xtal", "pclk", "baud"; + pinctrl-names = "default"; + pinctrl-0 = <&a_uart_pins>; + status = "disabled"; + }; + sdio: mmc@fe088000 { compatible = "amlogic,meson-axg-mmc"; reg = <0x0 0xfe088000 0x0 0x800>;
--
2.34.1