Open the auxiliary access
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在使能相应设备节点后，烧录内核镜像，在/dev中找不到ttysWK*
执行dmesg | grep wk 的日志如下：
  1. root@firefly:/home/firefly# dmesg|grep wk
  2. [    1.698273] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  3. [    1.698333] wk2xxx_probe() Can not read property power-gpio
  4. [    1.915310] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  5. [    1.915394] wk2xxx_probe() Can not read property power-gpio
  6. [    1.973897] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  7. [    1.973941] wk2xxx_probe() Can not read property power-gpio
  8. [    2.326726] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  9. [    2.326762] wk2xxx_probe() Can not read property power-gpio
  10. [    4.145193] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  11. [    4.145266] wk2xxx_probe() Can not read property power-gpio
  12. [    4.163622] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  13. [    4.163664] wk2xxx_probe() Can not read property power-gpio
  14. [    6.227995] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  15. [    6.228073] wk2xxx_probe() Can not read property power-gpio
  16. [    6.239275] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  17. [    6.239326] wk2xxx_probe() Can not read property power-gpio
  18. [    6.289764] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  19. [    6.289905] wk2xxx_probe() Can not read property power-gpio
  20. [    8.293450] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  21. [    8.293474] wk2xxx_probe() Can not read property power-gpio
  22. [    8.341840] 11wk2xxx_probe: setup mode 0, 8 bits/w, 10000000 Hz max
  23. [    8.341863] wk2xxx_probe() Can not read property power-gpio
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  • MaybeNot 若最新的5.10版本固件，使能spi1和spi_wk2xxx 后，仍无法找到/dev/ttysWK，但是内核打印信息不同：
    1. root@firefly:/home/firefly# dmesg|grep wk
    2. [    5.944042] wk2xxx_init: SPI driver for spi to Uart chip WK2XXX, etc.
    3. [    5.944058] wk2xxx_init: V2.4 On 2022.07.24
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    Posted at 2025-5-14 16:51:22  
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