[U-Boot] hwmon init

Heiko Schocher hs at denx.de
Thu Dec 9 08:03:19 CET 2010


Hello,

Is there a reason why the dtt sensors are initialized and accessed on
u-boot startup?

The U-Boot Design Principles[1] clearly say:

  Initialize devices only when they are needed within U-Boot, i.e. don't
  initialize the Ethernet interface(s) unless U-Boot performs a download
  over Ethernet; don't initialize any IDE or USB devices unless U-Boot
  actually tries to load files from these, etc. (and don't forget to
  shut down these devices after using them - otherwise nasty things may
  happen when you try to boot your OS).


Should that be changed?

bye,
Heiko

[1] http://www.denx.de/wiki/U-Boot/DesignPrinciples
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