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本帖最后由 kmchyxu 于 2025-3-13 17:15 编辑
盒子是E900V22D，S905L3，蓝牙芯片RTL8761BTV
刷了Armbian_24.5.0_amlogic_s905l3_jammy_6.1.63_haos_14.2，完全找不到蓝牙，具体体现是uart_A没有打开：
ls /dev/tty* 只找到/dev/ttyAML0
网络上搜索解决办法，简单来说
1，修改dtb，开启串口，加入蓝牙
2，替换/lib/firmware/rtl_bt/rtl8761b_config.bin
3. 在/lib/systemd/system/bluetooth.service的[Service]部分加一行：
ExecStopPost=/usr/bin/env gpioset 0 82=0
照着操作，现在卡在第2步，后边不知道该怎么办了，特向大家求助。目前状态：
相关修改：采用修改版的meson-gxl-s905l2-x7-5g.dtb刷机，相关信息及修改：
……
uart_A = "/soc/bus@c1100000/serial@84c0";
……
aliases {
mmc0 = "/soc/apb@d0000000/mmc@70000";
mmc1 = "/soc/apb@d0000000/mmc@72000";
mmc2 = "/soc/apb@d0000000/mmc@74000";
serial0 = "/soc/bus@c8100000/serial@4c0";
ethernet0 = "/soc/ethernet@c9410000";
serial1 = "/soc/bus@c1100000/serial@84c0";
};
……
serial@84c0 {
compatible = "amlogic,meson-gx-uart";
reg = <0x00 0x84c0 0x00 0x18>;
interrupts = <0x00 0x1a 0x01>;
status = "okay";
fifo-size = <0x80>;
clocks = <0x13 0x03 0x1a 0x13>;
clock-names = "xtal\0pclk\0baud";
pinctrl-0 = <0x14 0x15>;
uart-has-rtscts;
pinctrl-names = "default";
phandle = <0x51>;
bluetooth {
compatible = "realtek,rtl8723bs-bt";
};
};
关键修改：
status = "okay";
bluetooth {
compatible = "realtek,rtl8723bs-bt";
};
重启后有蓝牙了，但是处于down状态：
root@homeassistant:/bin # hciconfig -a
hci0: Type: Primary Bus: UART
BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
DOWN
RX bytes:128 acl:0 sco:0 events:2 errors:0
TX bytes:114 acl:0 sco:0 commands:3 errors:0
Features: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
Packet type: DM1 DH1 HV1
Link policy:
Link mode: PERIPHERAL ACCEPT
无法up起来：
root@homeassistant:/bin # hciconfig hci0 up
Can't init device hci0: Invalid argument (22)
查看hci信息：
root@homeassistant:/bin # dmesg|grep hci
[ 1.326789] sdhci: Secure Digital Host Controller Interface driver
[ 1.331673] sdhci: Copyright(c) Pierre Ossman
[ 1.342506] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.062990] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.067007] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[ 2.074667] xhci-hcd xhci-hcd.0.auto: USB3 root hub has no ports
[ 2.080499] xhci-hcd xhci-hcd.0.auto: hcc params 0x0228f664 hci version 0x100 quirks 0x0000008002010010
[ 2.089855] xhci-hcd xhci-hcd.0.auto: irq 31, io mem 0xc9000000
[ 6.806068] Bluetooth: hci0: RTL: examining hci_ver=06 hci_rev=000a lmp_ver=06 lmp_subver=8761
[ 7.017228] Bluetooth: hci0: RTL: examining hci_ver=06 hci_rev=000a lmp_ver=06 lmp_subver=8761
[ 7.020298] Bluetooth: hci0: RTL: unknown IC info, lmp subver 8761, hci rev 000a, hci ver 0006
[ 7.020314] Bluetooth: hci0: RTL: no config loaded
可能是config不对。haos已经有rtl8761b的config
root@homeassistant:/lib/firmware/rtl_bt # ls /lib/firmware/rtl_bt/rtl8761b_config.bin
/lib/firmware/rtl_bt/rtl8761b_config.bin
但是这里是只读的，网上找的config文件没法放进来
root@homeassistant:/lib/firmware/rtl_bt # mkdir test
mkdir: can't create directory 'test': Read-only file system
蓝牙似乎成功了1/3，但是因为haos无法修改文件，后边不知道该怎么办了，特向大家求助
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