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M.2 PCIE is it powered on?

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Posted at 6/8/2018 03:59:06     
I'm having issues with the RK3399 even recognising that there is a PCIE bus let alone getting it to work

It appears from the following that the voltage regulator is not configured to feed the pcie:

  1. [    0.261544] of_get_named_gpiod_flags: parsed 'gpio' property of node '/vcc3v3-pcie-regulator[0]' - status (0)
  2. [    0.261597] vcc3v3_pcie: no parameters
  3. [    0.261735] reg-fixed-voltage vcc3v3-pcie-regulator: vcc3v3_pcie supplying 0uV
  4. [    0.261850] of_get_named_gpiod_flags: parsed 'gpio' property of node '/vcc3v3-3g-regulator[0]' - status (0)
  5. [    0.261889] vcc3v3_3g: no parameters
  6. [    0.262014] reg-fixed-voltage vcc3v3-3g-regulator: vcc3v3_3g supplying 0uV
  7. [    0.262067] of_get_named_gpiod_flags: can't parse 'gpio' property of node '/vcc3v3-sys[0]'
  8. [    0.262102] vcc3v3_sys: 3300 mV
  9. [    0.262217] reg-fixed-voltage vcc3v3-sys: vcc3v3_sys supplying 3300000uV
  10. [    0.262357] of_get_named_gpiod_flags: parsed 'gpio' property of node '/vcc5v0-host-regulator[0]' - status (0)
  11. [    0.262394] vcc5v0_host: no parameters
  12. [    0.262511] reg-fixed-voltage vcc5v0-host-regulator: vcc5v0_host supplying 0uV
  13. [    0.262559] of_get_named_gpiod_flags: can't parse 'gpio' property of node '/vcc5v0-sys[0]'
  14. [    0.262579] vcc5v0_sys: 5000 mV
  15. [    0.262693] reg-fixed-voltage vcc5v0-sys: vcc5v0_sys supplying 5000000uV
  16. [    0.262738] of_get_named_gpiod_flags: can't parse 'gpio' property of node '/vcc-phy-regulator[0]'
  17. [    0.262752] vcc_phy: no parameters
  18. [    0.262875] reg-fixed-voltage vcc-phy-regulator: vcc_phy supplying 0uV
  19. [    0.262925] of_get_named_gpiod_flags: can't parse 'gpio' property of node '/vccadc-ref[0]'
  20. [    0.262940] vcc1v8_sys: 1800 mV
  21. [    0.263055] reg-fixed-voltage vccadc-ref: vcc1v8_sys supplying 1800000uV
  22. [    0.263188] of_get_named_gpiod_flags: parsed 'gpio' property of node '/vcc-lcd-regulator[0]' - status (0)
  23. [    0.263224] vcc_lcd: no parameters
  24. [    0.263337] reg-fixed-voltage vcc-lcd-regulator: vcc_lcd supplying 0uV
Copy the code

but some of the other bits are configured to provide power. I've been looking at the device tree files, but I'm a bit stuck as to what is missing - I don't really know what the gpio parameters are, and the only thing I can think of doing is setting it to be always on by setting it's voltage parameter to 3300000 in the dts like it is for vcc3v3_sys


any ideas?


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