diff options
| author | Andrew Geissler <andrewg@us.ibm.com> | 2017-08-07 16:26:39 -0500 |
|---|---|---|
| committer | Patrick Williams <patrick@stwcx.xyz> | 2017-08-15 05:00:00 +0000 |
| commit | c81787c930d31095842f96d112708c6a383df8c8 (patch) | |
| tree | cd3f5a30650763c9ec6005efd0e9ca2301c0cf52 /meta-openbmc-machines | |
| parent | 7cd3f54c9bd720f439b16a4050d4fe422ad2b2fc (diff) | |
| download | talos-openbmc-c81787c930d31095842f96d112708c6a383df8c8.tar.gz talos-openbmc-c81787c930d31095842f96d112708c6a383df8c8.zip | |
Increase AVDD on witherspoon
Per request of power team, adding an AVDD override to
our power on sequence
Resolves openbmc/openbmc#2112
Change-Id: I82478e6f3eb30a108c4e7332369d36568e425315
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
Diffstat (limited to 'meta-openbmc-machines')
| -rw-r--r-- | meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/power-workarounds.sh | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/power-workarounds.sh b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/power-workarounds.sh index 51d3a9aa8..6c11caae1 100644 --- a/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/power-workarounds.sh +++ b/meta-openbmc-machines/meta-openpower/meta-ibm/meta-witherspoon/recipes-phosphor/chassis/avsbus-control/power-workarounds.sh @@ -22,3 +22,36 @@ i2cset -y 4 0x71 0x5E 0xCD 0x00 i # set to 0.8V # VDN B - PGOOD_ON threshold i2cset -y 5 0x71 0x00 0x00 b # PAGE i2cset -y 5 0x71 0x5E 0xCD 0x00 i # set to 0.8V + +# unbind ucd driver to permit i2cset +ucd_retries=5 +ucd= + +ucdpath="/sys/bus/i2c/drivers/ucd9000" +if [ -e $ucdpath ] +then + ucd=`ls -1 $ucdpath | grep 64` + if [ -n "$ucd" ] + then + echo $ucd > $ucdpath/unbind + fi +fi + +# Raise AVDD +100mV +i2cset -y 11 0x64 0x00 0x09 i # set PAGE +i2cset -y 11 0x64 0xF5 0x81 i # set margin_config +i2cset -y 11 0x64 0x21 0x85 0x33 i # set VOUT_COMMAND + +# re-bind ucd driver only if we unbound it (i.e. ucd has been set with a value) +if [ -e $ucdpath -a -n "$ucd" ]; then + j=0 + until [ $j -ge $ucd_retries ] || [ -e $ucdpath/$ucd ]; do + j=$((j+1)) + echo $ucd > $ucdpath/bind || ret=$? + if [ $j -gt 1 ]; then + echo "rebinding UCD driver. Retry number $j" + sleep 1 + fi + done + if [ ! -e $ucdpath/$ucd ]; then exit $ret; fi +fi |
