linux-kernel - [PATCH] arm64: dts: rockchip: Fix Bluetooth on the RockPro64 board

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Message-ID: <20251130161259.9828-1-raphael.kernel@jakse.fr>
Date: Sun, 30 Nov 2025 17:12:59 +0100
From: Raphaël Jakse <raphael.kernel@...se.fr>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	heiko@...ech.de
Cc: devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Raphaël Jakse <raphael.kernel@...se.fr>
Subject: [PATCH] arm64: dts: rockchip: Fix Bluetooth on the RockPro64 board

The RockPro64 board has an optional BCM4345C5 Bluetooth device on UART0.

This patch fixes audio stutters by setting its correct max-speed and
compatible properties.

Signed-off-by: Raphaël Jakse <raphael.kernel@...se.fr>
---
 arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dts | 7 +++++++
 arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts    | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dts
index 304e3c51391c..883d9bcfe792 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-v2.dts
@@ -28,3 +28,10 @@ es8316_p0_0: endpoint {
 		};
 	};
 };
+
+&uart0 {
+	bluetooth {
+		compatible = "brcm,bcm4345c5";
+		max-speed = <1500000>;
+	};
+};
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
index 4b42717800f7..ae3ee91dba2f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts
@@ -28,3 +28,10 @@ es8316_p0_0: endpoint {
 		};
 	};
 };
+
+&uart0 {
+	bluetooth {
+		compatible = "brcm,bcm4345c5";
+		max-speed = <1500000>;
+	};
+};
-- 
2.52.0