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Diffstat (limited to 'roms/skiboot/doc/power-management.rst')
| -rw-r--r-- | roms/skiboot/doc/power-management.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/roms/skiboot/doc/power-management.rst b/roms/skiboot/doc/power-management.rst new file mode 100644 index 000000000..76491a714 --- /dev/null +++ b/roms/skiboot/doc/power-management.rst @@ -0,0 +1,17 @@ +Power Management +================ + +See :ref:`power-mgt-devtree` for device tree structure describing power management facilities. + +Debugging +--------- + +There exist a few debug knobs that can be set via nvram settings. These are +**not** ABI and may be changed or removed at *any* time. + +Disabling specific stop states +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +On boot, specific stop states can be disabled via setting a mask. For example, +to disable all but stop 0,1,2, use ~0xE0000000. :: + + nvram -p ibm,skiboot --update-config opal-stop-state-disable-mask=0x1FFFFFFF |