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powerpc/4xx: Add optional "reset_type" property to control reboot via dts

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By setting "reset_type" to one of the following values, the default
software reset mechanism may be overidden. Here the possible values of
"reset_type":

  1 - PPC4xx core reset
  2 - PPC4xx chip reset
  3 - PPC4xx system reset (default)

This will be used by a new PPC440SPe board port, which needs a "chip
reset" instead of the default "system reset" to be asserted.

Signed-off-by: Stefan Roese <[email protected]>
Cc: Josh Boyer <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Acked-by: Josh Boyer <[email protected]>
Signed-off-by: Josh Boyer <[email protected]>
This commit is contained in:
Stefan Roese 2010-04-27 22:13:34 +00:00 • committed by Josh Boyer
commit a32fe93daf
2 changed files with 40 additions and 2 deletions
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18
Documentation/powerpc/dts-bindings/4xx/reboot.txt Normal file
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Reboot property to control system reboot on PPC4xx systems:
By setting "reset_type" to one of the following values, the default
software reset mechanism may be overidden. Here the possible values of
"reset_type":
1 - PPC4xx core reset
2 - PPC4xx chip reset
3 - PPC4xx system reset (default)
Example:
cpu@0 {
device_type = "cpu";
model = "PowerPC,440SPe";
...
reset-type = <2>; /* Use chip-reset */
};