Bluetooth not working

lexaguskov

Hey guys,

I'm playing with Station M2 (which is the same hardware as rk3566-firefly-roc-pc board) and bluetooth is not working properly for me on Armbian and ubuntu.

I'm using armbian with 5.18.0-rc4-media kernel.

dmesg reports there's a conflict between hci uart port and serial@fdd50000, and hci socket is not available in the system, hciconfig does not show anything.

I tried recompiling .dtd with everything related to serial@fdd50000 removed, and now hciconfig does display the socket, but it is always in DOWN state.

1. hci0:        Type: Primary  Bus: UART
   
2.         BD Address: 00:00:00:00:00:00  ACL MTU: 0:0  SCO MTU: 0:0
   
3.         DOWN
   
4.         RX bytes:0 acl:0 sco:0 events:0 errors:0
   
5.         TX bytes:4 acl:0 sco:0 commands:1 errors:0

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Dmesg also shows "[   15.682377] Bluetooth: hci0: command 0x0c03 tx timeout"

Any idea how can this be fixed?

lexaguskov

时间的蝴蝶 Posted at 5/17/2022 16:10
Bluetooth uses uart1, which will not conflict with serial@fdd50000(uart0).

Confirm which wifi-bt  ...

This is my dmesg:

===[   12.510796] rockchip-pinctrl pinctrl: pin gpio0-17 already requested by fdd50000.serial; cannot claim for serial0-0
[   12.510809] rockchip-pinctrl pinctrl: pin-17 (serial0-0) status -22
[   12.510816] rockchip-pinctrl pinctrl: could not request pin 17 (gpio0-17) from group bt-enable-h  on device rockchip-pinctrl
[   12.510822] hci_uart_bcm serial0-0: Error applying setting, reverse things back
[   12.559615] random: crng init done
[   12.559634] random: 7 urandom warning(s) missed due to ratelimiting
[   12.753899] cfg80211: failed to load regulatory.db
[   12.765637] brcmfmac mmc2:0001:1: Direct firmware load for brcm/brcmfmac43455-sdio.firefly,rk3566-roc-pc.txt failed with error -2
[   12.765660] brcmfmac mmc2:0001:1: Falling back to sysfs fallback for: brcm/brcmfmac43455-sdio.firefly,rk3566-roc-pc.txt
[   12.969434] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6
[   12.980319] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Feb 27 2018 03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04
===

what concerns me is line 3, some gpio pin (one that enables bluetooth chip?) is allocated for uart0, according to logs. Im using armbian with `rk3566-firefly-roc-pc.dtd`, heres the decompiled device tree:
====
...
        serial@fdd50000 {
                compatible = "rockchip,rk3568-uart\0snps,dw-apb-uart";
                reg = <0x00 0xfdd50000 0x00 0x100>;
                interrupts = <0x00 0x74 0x04>;
                clocks = <0x1c 0x0b 0x1c 0x2c>;
                clock-names = "baudclk\0apb_pclk";
                dmas = <0x24 0x00 0x24 0x01>;
                dma-names = "tx\0rx";
                pinctrl-0 = <0x25>;
                pinctrl-names = "default";
                reg-io-width = <0x04>;
                reg-shift = <0x02>;
                status = "okay";
                phandle = <0xe1>;
        };


...

        serial@fe650000 {
                compatible = "rockchip,rk3568-uart\0snps,dw-apb-uart";
                reg = <0x00 0xfe650000 0x00 0x100>;
                interrupts = <0x00 0x75 0x04>;
                clocks = <0x0e 0x11f 0x0e 0x11c>;
                clock-names = "baudclk\0apb_pclk";
                dmas = <0x24 0x02 0x24 0x03>;
                dma-names = "tx\0rx";
                pinctrl-0 = <0x90 0x91>;
                pinctrl-names = "default";
                reg-io-width = <0x04>;
                reg-shift = <0x02>;
                status = "okay";
                uart-has-rtscts;
                phandle = <0x10a>;

                bluetooth {
                        compatible = "brcm,bcm43438-bt";
                        clocks = <0x92 0x01>;
                        clock-names = "lpo";
                        device-wake-gpios = <0x93 0x11 0x00>;
                        host-wake-gpios = <0x93 0x10 0x00>;
                        shutdown-gpios = <0x93 0x0f 0x00>;
                        pinctrl-names = "default";
                        pinctrl-0 = <0x94 0x95 0x96>;
                        vbat-supply = <0x23>;
                        vddio-supply = <0x45>;
                };
        };

====

could it be that my .dtd file is incorrect?


I checked the rkwifibt repo and it does not seem to work

1. # sh bt_load_broadcom_firmware</div><div>brcm_patchram_plus1: no process found
   
2. ###AMPAK FW Auto detection patch version = [v1.1 20161117]##
   
3. Can't get device info: No such devic
   
4. root@os:/rkwifibt# cp: cannot stat '/data/cfg/device_info.txt': No such file or director
   
5. port --enable_hci could not be opened, error 2

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The chip is AP6255