From: Ronald Claveau <linux-kernel-dev@aliel.fr>
To: Neil Armstrong <neil.armstrong@linaro.org>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Ronald Claveau <linux-kernel-dev@aliel.fr>
Subject: [PATCH 3/3] arm64: dts: amlogic: t7: khadas-vim4: Enable Bluetooth
Date: Wed, 15 Apr 2026 13:16:15 +0200 [thread overview]
Message-ID: <20260415-add-bluetooth-t7-vim4-v1-3-0ba0746cc1d6@aliel.fr> (raw)
In-Reply-To: <20260415-add-bluetooth-t7-vim4-v1-0-0ba0746cc1d6@aliel.fr>
Enable UART C on the Khadas VIM4 board and attach the BCM43438
compatible Bluetooth controller to it. The node configures the RTS/CTS
hardware flow control, the associated pinmux, the power supplies (vddao_3v3
and vddao_1v8), the 32 kHz LPO clock shared with the wifi32k fixed
clock, and the GPIO lines used for host wakeup, device wakeup and
shutdown.
Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
---
.../dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
index 69d6118ba57e7..16f648908090f 100644
--- a/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
+++ b/arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
@@ -253,3 +253,22 @@ &uart_a {
clocks = <&xtal>, <&xtal>, <&xtal>;
clock-names = "xtal", "pclk", "baud";
};
+
+&uart_c {
+ status = "okay";
+ pinctrl-0 = <&uart_c_pins>;
+ pinctrl-names = "default";
+ uart-has-rtscts;
+
+ bluetooth {
+ compatible = "brcm,bcm43438-bt";
+ shutdown-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+ host-wakeup-gpios = <&gpio GPIOX_18 GPIO_ACTIVE_HIGH>;
+ device-wakeup-gpios = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>;
+ max-speed = <3000000>;
+ clocks = <&wifi32k>;
+ clock-names = "lpo";
+ vbat-supply = <&vddao_3v3>;
+ vddio-supply = <&vddao_1v8>;
+ };
+};
--
2.49.0
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prev parent reply other threads:[~2026-04-15 11:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-15 11:16 [PATCH 0/3] arm64: dts: amlogic: t7: Add UART support and enable Bluetooth on VIM4 Ronald Claveau
2026-04-15 11:16 ` [PATCH 1/3] arm64: dts: amlogic: t7: Add uart_c pinctrl pins group Ronald Claveau
2026-04-15 11:28 ` Xianwei Zhao
2026-04-15 13:44 ` Ronald Claveau
2026-04-15 11:16 ` [PATCH 2/3] arm64: dts: amlogic: t7: Add UART controllers nodes Ronald Claveau
2026-04-15 11:38 ` Xianwei Zhao
2026-04-15 14:32 ` Ronald Claveau
2026-04-15 11:16 ` Ronald Claveau [this message]
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