linux-kernel - [PATCH 2/6] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable bluetooth

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Message-Id: <20260123022258.136448-3-nick@khadas.com>
Date: Fri, 23 Jan 2026 10:22:54 +0800
From: Nick Xie <nick@...das.com>
To: neil.armstrong@...aro.org,
	khilman@...libre.com,
	jbrunet@...libre.com,
	martin.blumenstingl@...glemail.com,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org
Cc: krzk+dt@...nel.org,
	robh@...nel.org,
	conor+dt@...nel.org,
	xieqinick@...il.com,
	Nick Xie <nick@...das.com>
Subject: [PATCH 2/6] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable bluetooth

The Khadas VIM1S board uses the Ampak AP6256 Wi-Fi/Bluetooth module.
The Bluetooth controller is connected via UART_A and requires the
external 32k clock (LPO).

Enable the UART_A node and add the bluetooth child node to support it.

Signed-off-by: Nick Xie <nick@...das.com>
---
 .../dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts    | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index 27d0f6134ea9d..041291999bc8c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -254,6 +254,19 @@ &spicc0 {
 	cs-gpios = <&gpio GPIOX_10 GPIO_ACTIVE_LOW>;
 };
 
+&uart_a {
+	status = "okay";
+	uart-has-rtscts;
+
+	bluetooth {
+		compatible = "brcm,bcm4345c5";
+		shutdown-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+		max-speed = <2000000>;
+		clocks = <&sdio_32k>;
+		clock-names = "lpo";
+	};
+};
+
 &uart_b {
 	status = "okay";
 };
-- 
2.34.1