在RK3588 Linux系统中安装 CH341 驱动,串口没法使用。要怎么处理？

babalala123

使用的是RK3588  Linux系统，安装  CH341.ko 后，驱动还是没法使用，麻烦看看是什么原因？下面是异常的日志。

1. [   14.249014] rockchip-dp fdec0000.edp: failed to read max link rate
   
2. [   14.284922] rockchip-dp fdec0000.edp: failed to read max link rate
   
3. [   14.957707] ttyFIQ ttyFIQ0: tty_port_close_start: tty->count = 1 port count = 2
   
4. [   16.886640] rockchip-dp fdec0000.edp: failed to read max link rate
   
5. [   18.334406] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
   
6. [   18.334881] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
   
7. [   18.335418] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
   
8. [   18.335612] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
   
9. [   21.880613] rk_gmac-dwmac fe1c0000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
   
10. [   21.880705] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
    
11. [   21.881324] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
12. [   21.890376] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
13. [   23.228796] of_dma_request_slave_channel: dma-names property of node '/serial@feb40000' missing or empty
    
14. [   23.228814] dw-apb-uart feb40000.serial: failed to request DMA, use interrupt mode
    
15. [   23.270482] of_dma_request_slave_channel: dma-names property of node '/serial@feb70000' missing or empty
    
16. [   23.270499] dw-apb-uart feb70000.serial: failed to request DMA, use interrupt mode
    
17. [   23.344844] of_dma_request_slave_channel: dma-names property of node '/serial@feba0000' missing or empty
    
18. [   23.344862] dw-apb-uart feba0000.serial: failed to request DMA, use interrupt mode
    
19. [   31.465118] systemd-journald[272]: Failed to read journal file /var/log/journal/bcd2c5c6c2234abfaca379a4c143245a/user-1000.journal for rotation, trying to move it out of the way: Device or resource busy
    
20. [   38.410360] vcc3v3_pcie30: disabling
    
21. [   38.410578] vcc3v3_lcd_dsi0: disabling
    
22. [   38.410589] vcc3v3_lcd_dsi1: disabling
    
23. [   49.057052] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
24. [   49.057420] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
25. [   49.057710] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
26. [   49.287064] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
27. [   49.287484] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
28. [   49.287802] [dhd] CFG80211-ERROR) wl_cfg80211_netdev_notifier_call : wdev null. Do nothing
    
29. [  385.101808] usbcore: registered new interface driver usb_ch341
    
30. [  385.101818] ch341: USB serial driver for ch340, ch341, etc.
    
31. [  385.101820] ch341: V1.7 On 2023.07
    
32. [  406.073316] usb 1-1.2: USB disconnect, device number 3
    
33. [  411.066930] usb 1-1.1: new full-speed USB device number 4 using ehci-platform
    
34. [  411.188819] usb 1-1.1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice=81.34
    
35. [  411.188832] usb 1-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
    
36. [  411.188836] usb 1-1.1: Product: USB Serial
    
37. [  411.190035] usb_ch341 1-1.1:1.0: ttyCH341USB0: ch341 USB device
    
38. [  411.274618] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input6
    
39. [  411.276029] usb 1-1.1: usbfs: interface 0 claimed by usb_ch341 while 'brltty' sets config #1
    
40. [  411.276711] usb_ch341 1-1.1:1.0: ch341 usb device disconnect.

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admin

从日志来看，就是 brltty 服务和 CH341冲突了，可以用下面命令移除 britty 服务。然后再重新加载驱动。

1. sudo apt remove brltty

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