RockPi4B+用的AP6256模块，在使用官方4.4内核下蓝牙A2DP播放音频没问题，但是使用5.10以上内核的Armbian、Manjaro等系统蓝牙A2DP Sink模式音频非常卡顿，完全不可用，请问是不是5.10以上内核目前对AP6256支持不好的问题？
RockPi4B+ AP6256蓝牙A2DP问题
这个问题，我们之前遇过。
你可以在 5.10 以上内核打这个补丁，然后重编 armbian/manjaro。或者是只重编 dts ，然后替换已有固件的对应的 dtb。
From 0b1b22b00b4e051e5f61c11fba9308ef65ad6a7c Mon Sep 17 00:00:00 2001
From: Jagan Teki <jagan@amarulasolutions.com>
Date: Sat, 23 Oct 2021 23:39:37 +0530
Subject: [PATCH v2] arm64: dts: rockchip: Fix ROCK Pi 4 Bluetooth properties
This patch fixes the Bluetooth on ROCK Pi 4 boards.
- update with desired compatible 'brcm,bcm4345c5'.
- add vbat and vddio supply regulators.
- BCM4345C5 support upto 1500000, so add max-speed.
- change the clock-names to lpo
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v2:
- change the clock-names as lpo
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts | 7 +++++--
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts | 7 +++++--
arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts | 7 +++++--
3 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts
index dfad13d2ab24..5bd2b8db3d51 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b-plus.dts
@@ -35,13 +35,16 @@ &uart0 {
status = "okay";
bluetooth {
- compatible = "brcm,bcm43438-bt";
+ compatible = "brcm,bcm4345c5";
clocks = <&rk808 1>;
- clock-names = "ext_clock";
+ clock-names = "lpo";
device-wakeup-gpios = <&gpio2 RK_PD3 GPIO_ACTIVE_HIGH>;
host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+ max-speed = <1500000>;
pinctrl-names = "default";
pinctrl-0 = <&bt_host_wake_l &bt_wake_l &bt_enable_h>;
+ vbat-supply = <&vcc3v3_sys>;
+ vddio-supply = <&vcc_1v8>;
};
};
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts
index 6c63e617063c..cf48746a3ad8 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4b.dts
@@ -34,13 +34,16 @@ &uart0 {
status = "okay";
bluetooth {
- compatible = "brcm,bcm43438-bt";
+ compatible = "brcm,bcm4345c5";
clocks = <&rk808 1>;
- clock-names = "ext_clock";
+ clock-names = "lpo";
device-wakeup-gpios = <&gpio2 RK_PD3 GPIO_ACTIVE_HIGH>;
host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+ max-speed = <1500000>;
pinctrl-names = "default";
pinctrl-0 = <&bt_host_wake_l &bt_wake_l &bt_enable_h>;
+ vbat-supply = <&vcc3v3_sys>;
+ vddio-supply = <&vcc_1v8>;
};
};
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts
index 99169bcd51c0..57ddf55ee693 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4c.dts
@@ -35,14 +35,17 @@ &uart0 {
status = "okay";
bluetooth {
- compatible = "brcm,bcm43438-bt";
+ compatible = "brcm,bcm4345c5";
clocks = <&rk808 1>;
- clock-names = "ext_clock";
+ clock-names = "lpo";
device-wakeup-gpios = <&gpio2 RK_PD3 GPIO_ACTIVE_HIGH>;
host-wakeup-gpios = <&gpio0 RK_PA4 GPIO_ACTIVE_HIGH>;
shutdown-gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+ max-speed = <1500000>;
pinctrl-names = "default";
pinctrl-0 = <&bt_host_wake_l &bt_wake_l &bt_enable_h>;
+ vbat-supply = <&vcc3v3_sys>;
+ vddio-supply = <&vcc_1v8>;
};
};
--
2.25.1
非常感谢:star_struck:
今天按照你的方法编译了dts，成功了~
蓝牙问题解决！
感谢！