summaryrefslogtreecommitdiff
path: root/README
diff options
context:
space:
mode:
authorVincent Palatin <vpalatin@chromium.org>2012-09-20 09:52:34 -0700
committerGerrit <chrome-bot@google.com>2012-10-15 12:14:27 -0700
commit9a0e69cbbf9c20ea5915d5cce56dd6ec9226d945 (patch)
treef8b3fa49bee080c9e65ed46586f63a2b737f74c2 /README
parentb3fa69f17f4fec6cbe9cdc34e3b8abff367050f1 (diff)
downloadchrome-ec-9a0e69cbbf9c20ea5915d5cce56dd6ec9226d945.tar.gz
spring: force power on LCD and backlight
For board bring-up. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=chrome-os-partner:10912 chrome-os-partner:14324 TEST=on Spring, boot the AP, issue "pmu" command on the EC console and FET1 and FET6 (registers 0xf and 0x14) contains 0x13. Change-Id: Ic8fd681c2e2f3e2168de2cb7f83920d4feefd485 Reviewed-on: https://gerrit.chromium.org/gerrit/33703 Commit-Ready: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org>
Diffstat (limited to 'README')
-rw-r--r--README7
1 files changed, 7 insertions, 0 deletions
diff --git a/README b/README
index 700adcc624..76a10b1852 100644
--- a/README
+++ b/README
@@ -66,3 +66,10 @@ Build Options
the AP indicating this state. The GPIO will be driven low when
AC power is not connected, and high when it is connected. This
uses GPIO_AC_STATUS for this purpose.
+
+- CONFIG_PMU_FORCE_FET
+
+ Force switching on and off the FETs on the PMU controlling various
+ power rails during AP startup and shutdown sequences.
+ This is mainly useful for bringup when we don't have the corresponding
+ sequences in the AP code.