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From: Thomas Gerner <thomas.gerner@muenchen-mail.de>
To: Marcel Holtmann <marcel@holtmann.org>,
	Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
	Drew Fustini <fustini@kernel.org>, Guo Ren <guoren@kernel.org>,
	Fu Wei <wefu@redhat.com>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Conor Dooley <conor+dt@kernel.org>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>,
	linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-riscv@lists.infradead.org, devicetree@vger.kernel.org,
	Thomas Gerner <thomas.gerner@muenchen-mail.de>
Subject: [PATCH v2 2/2] riscv: dts: thead: Enable bluetooth on BeagleV-Ahead
Date: Tue, 20 Oct 2026 15:26:04 +0200	[thread overview]
Message-ID: <20261020132604.90708-3-thomas.gerner@muenchen-mail.de> (raw)
In-Reply-To: <20261020132604.90708-1-thomas.gerner@muenchen-mail.de>

On the BeagleV-Ahead the bluetooth module of the Ampak AP6203BM is
identified by the btbcm driver as BCM4362A2. The module is connected by
UART4, several gpio pins and an I2S interface. The I2S is currently not
used as there is currently no driver.

Signed-off-by: Thomas Gerner <thomas.gerner@muenchen-mail.de>
---
Changes in v2:
	- use default pinctrl definition for bluetooth in and out pins
	
 .../boot/dts/thead/th1520-beaglev-ahead.dts   | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
index e16484a47653..7161a9d4c61f 100644
--- a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
+++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
@@ -76,6 +76,23 @@ led-5 {
 		};
 	};
 
+	reg_vbat_1v8: regulator-vbat-1v8 {
+		compatible = "regulator-fixed";
+		regulator-boot-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "vbat-1v8";
+	};
+
+	reg_vbat_3v3: regulator-vbat-3v3 {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		regulator-boot-on;
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "vbat-3v3";
+	};
+
 	hdmi-connector {
 		compatible = "hdmi-connector";
 		type = "d";
@@ -152,6 +169,28 @@ led-pins {
 };
 
 &padctrl0_apsys {
+	bluetooth_pins: bluetooth-0 {
+		in-pins {
+			bias-disable;
+			drive-strength = <1>;
+			function = "gpio";
+			input-enable;
+			input-schmitt-enable;
+			pins = "GPIO2_30";
+			slew-rate = <0>;
+		};
+
+		out-pins {
+			bias-disable;
+			drive-strength = <3>;
+			input-disable;
+			input-schmitt-disable;
+			pins = "SDIO1_DETN",	/* GPIO2_29 */
+			       "SDIO1_WPRTN";	/* GPIO2_28 */
+			slew-rate = <0>;
+		};
+	};
+
 	gmac0_pins: gmac0-0 {
 		tx-pins {
 			pins = "GMAC0_TX_CLK",
@@ -268,6 +307,30 @@ reg-on-pins {
 	};
 };
 
+&padctrl1_apsys {
+	uart4_pins: uart4-0 {
+		rx-pins {
+			bias-disable;
+			drive-strength = <1>;
+			function = "uart";
+			input-enable;
+			pins = "UART4_RXD", "UART4_CTSN";
+			input-schmitt-enable;
+			slew-rate = <0>;
+		};
+
+		tx-pins {
+			bias-disable;
+			drive-strength = <3>;
+			function = "uart";
+			input-disable;
+			pins = "UART4_TXD", "UART4_RTSN";
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
+};
+
 &sdio0 {
 	bus-width = <4>;
 	max-frequency = <198000000>;
@@ -314,3 +377,25 @@ &uart0 {
 	pinctrl-0 = <&uart0_pins>;
 	status = "okay";
 };
+
+&uart4 {
+	pinctrl-0 = <&uart4_pins>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm4329-bt";
+		device-wakeup-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <30 IRQ_TYPE_EDGE_RISING>;
+		interrupt-names = "host-wakeup";
+		max-speed = <921600>;
+		pinctrl-0 = <&bluetooth_pins>;
+		pinctrl-names = "default";
+		shutdown-gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>; 	/* BT-REG-ON */
+		vbat-supply = <&reg_vbat_3v3>;
+		vddio-supply = <&reg_vbat_1v8>;
+	};
+};
-- 
2.53.0


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

WARNING: multiple messages have this Message-ID (diff)
From: Thomas Gerner <thomas.gerner@muenchen-mail.de>
To: Marcel Holtmann <marcel@holtmann.org>,
	Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
	Drew Fustini <fustini@kernel.org>, Guo Ren <guoren@kernel.org>,
	Fu Wei <wefu@redhat.com>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Conor Dooley <conor+dt@kernel.org>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>,
	linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-riscv@lists.infradead.org, devicetree@vger.kernel.org,
	Thomas Gerner <thomas.gerner@muenchen-mail.de>
Subject: [PATCH v2 2/2] riscv: dts: thead: Enable bluetooth on BeagleV-Ahead
Date: Tue, 20 Oct 2026 15:26:04 +0200	[thread overview]
Message-ID: <20261020132604.90708-3-thomas.gerner@muenchen-mail.de> (raw)
In-Reply-To: <20261020132604.90708-1-thomas.gerner@muenchen-mail.de>

On the BeagleV-Ahead the bluetooth module of the Ampak AP6203BM is
identified by the btbcm driver as BCM4362A2. The module is connected by
UART4, several gpio pins and an I2S interface. The I2S is currently not
used as there is currently no driver.

Signed-off-by: Thomas Gerner <thomas.gerner@muenchen-mail.de>
---
Changes in v2:
	- use default pinctrl definition for bluetooth in and out pins
	
 .../boot/dts/thead/th1520-beaglev-ahead.dts   | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
index e16484a47653..7161a9d4c61f 100644
--- a/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
+++ b/arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts
@@ -76,6 +76,23 @@ led-5 {
 		};
 	};
 
+	reg_vbat_1v8: regulator-vbat-1v8 {
+		compatible = "regulator-fixed";
+		regulator-boot-on;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "vbat-1v8";
+	};
+
+	reg_vbat_3v3: regulator-vbat-3v3 {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		regulator-boot-on;
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "vbat-3v3";
+	};
+
 	hdmi-connector {
 		compatible = "hdmi-connector";
 		type = "d";
@@ -152,6 +169,28 @@ led-pins {
 };
 
 &padctrl0_apsys {
+	bluetooth_pins: bluetooth-0 {
+		in-pins {
+			bias-disable;
+			drive-strength = <1>;
+			function = "gpio";
+			input-enable;
+			input-schmitt-enable;
+			pins = "GPIO2_30";
+			slew-rate = <0>;
+		};
+
+		out-pins {
+			bias-disable;
+			drive-strength = <3>;
+			input-disable;
+			input-schmitt-disable;
+			pins = "SDIO1_DETN",	/* GPIO2_29 */
+			       "SDIO1_WPRTN";	/* GPIO2_28 */
+			slew-rate = <0>;
+		};
+	};
+
 	gmac0_pins: gmac0-0 {
 		tx-pins {
 			pins = "GMAC0_TX_CLK",
@@ -268,6 +307,30 @@ reg-on-pins {
 	};
 };
 
+&padctrl1_apsys {
+	uart4_pins: uart4-0 {
+		rx-pins {
+			bias-disable;
+			drive-strength = <1>;
+			function = "uart";
+			input-enable;
+			pins = "UART4_RXD", "UART4_CTSN";
+			input-schmitt-enable;
+			slew-rate = <0>;
+		};
+
+		tx-pins {
+			bias-disable;
+			drive-strength = <3>;
+			function = "uart";
+			input-disable;
+			pins = "UART4_TXD", "UART4_RTSN";
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
+};
+
 &sdio0 {
 	bus-width = <4>;
 	max-frequency = <198000000>;
@@ -314,3 +377,25 @@ &uart0 {
 	pinctrl-0 = <&uart0_pins>;
 	status = "okay";
 };
+
+&uart4 {
+	pinctrl-0 = <&uart4_pins>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm4329-bt";
+		device-wakeup-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <30 IRQ_TYPE_EDGE_RISING>;
+		interrupt-names = "host-wakeup";
+		max-speed = <921600>;
+		pinctrl-0 = <&bluetooth_pins>;
+		pinctrl-names = "default";
+		shutdown-gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>; 	/* BT-REG-ON */
+		vbat-supply = <&reg_vbat_3v3>;
+		vddio-supply = <&reg_vbat_1v8>;
+	};
+};
-- 
2.53.0


  parent reply	other threads:[~2026-10-20 13:27 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-20 13:26 [PATCH v2 0/2] Enable bluetooth on BeagleV-Ahead Thomas Gerner
2026-10-20 13:26 ` Thomas Gerner
2026-10-20 13:26 ` [PATCH v2 1/2] Bluetooth: btbcm: disable read tx power for BeagleV-Ahead Thomas Gerner
2026-10-20 13:26   ` Thomas Gerner
2026-10-20 17:46   ` Enable bluetooth on BeagleV-Ahead bluez.test.bot
2026-10-20 13:26 ` Thomas Gerner [this message]
2026-10-20 13:26   ` [PATCH v2 2/2] riscv: dts: thead: " Thomas Gerner

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