linux-kernel - [PATCH v1 2/2] riscv: dts: starfive: Enable Bluetooth on JH7100 boards

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Date: Wed,  8 May 2024 13:15:55 +0200
From: Emil Renner Berthing <emil.renner.berthing@...onical.com>
To: devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Emil Renner Berthing <kernel@...il.dk>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>
Subject: [PATCH v1 2/2] riscv: dts: starfive: Enable Bluetooth on JH7100 boards

From: Emil Renner Berthing <kernel@...il.dk>

Add pinctrl and UART nodes for the Broadcom Wifi/Bluetooth module on the
BeagleV Starlight and StarFive VisionFive V1 boards.

Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
---
 .../boot/dts/starfive/jh7100-common.dtsi      | 49 +++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7100-common.dtsi b/arch/riscv/boot/dts/starfive/jh7100-common.dtsi
index ae1a6aeb0aea..1f79481bfd96 100644
--- a/arch/riscv/boot/dts/starfive/jh7100-common.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7100-common.dtsi
@@ -289,6 +289,41 @@ GPO_SDIO1_PAD_CDATA_OEN_BIT3,
 		};
 	};
 
+	uart0_pins: uart0-0 {
+		rx-pins {
+			pinmux = <GPIOMUX(40, GPO_LOW, GPO_DISABLE,
+				  GPI_UART0_PAD_SIN)>;
+			bias-pull-up;
+			drive-strength = <14>;
+			input-enable;
+			input-schmitt-enable;
+		};
+		tx-pins {
+			pinmux = <GPIOMUX(41, GPO_UART0_PAD_SOUT,
+				  GPO_ENABLE, GPI_NONE)>;
+			bias-disable;
+			drive-strength = <35>;
+			input-disable;
+			input-schmitt-disable;
+		};
+		cts-pins {
+			pinmux = <GPIOMUX(39, GPO_LOW, GPO_DISABLE,
+				  GPI_UART0_PAD_CTSN)>;
+			bias-pull-down;
+			drive-strength = <14>;
+			input-enable;
+			input-schmitt-enable;
+		};
+		rts-pins {
+			pinmux = <GPIOMUX(42, GPO_UART0_PAD_RTSN,
+				  GPO_ENABLE, GPI_NONE)>;
+			bias-disable;
+			drive-strength = <35>;
+			input-disable;
+			input-schmitt-disable;
+		};
+	};
+
 	uart3_pins: uart3-0 {
 		rx-pins {
 			pinmux = <GPIOMUX(13, GPO_LOW, GPO_DISABLE,
@@ -393,6 +428,20 @@ wifi@1 {
 	};
 };
 
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+	uart-has-rtscts;
+	status = "okay";
+
+	bluetooth {
+		compatible = "brcm,bcm4330-bt";
+		max-speed = <4000000>;
+		device-wakeup-gpios = <&gpio 38 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio 35 GPIO_ACTIVE_LOW>;
+	};
+};
+
 &uart3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart3_pins>;
-- 
2.43.0