Werner Zeh has uploaded this change for review. ( https://review.coreboot.org/20413
Change subject: mb/siemens/mc_bdx1: Set up RTC backup mode to primary cell ......................................................................
mb/siemens/mc_bdx1: Set up RTC backup mode to primary cell
The used RTC6110SA has issues to enter backup mode when the power supply decreases too slow when the mainboard is turned off. Switch to backup mode "primary cell" to make sure backup mode will be entered correctly on power-off. In addition set IOCUTEN to minimize the backup current consumption of the RTC.
Change-Id: I9733aa9f2981a25f6d42279eff0c4980e5eb5a5a Signed-off-by: Werner Zeh werner.zeh@siemens.com --- M src/mainboard/siemens/mc_bdx1/devicetree.cb 1 file changed, 4 insertions(+), 1 deletion(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/13/20413/1
diff --git a/src/mainboard/siemens/mc_bdx1/devicetree.cb b/src/mainboard/siemens/mc_bdx1/devicetree.cb index 543786b..8bb582e 100644 --- a/src/mainboard/siemens/mc_bdx1/devicetree.cb +++ b/src/mainboard/siemens/mc_bdx1/devicetree.cb @@ -12,7 +12,10 @@ device pci 1f.3 on # Enable external RTC chip chip drivers/i2c/rx6110sa - register "cof_selection" = "0" + register "pmon_sampling" = "PMON_SAMPL_256_MS" + register "bks_on" = "0" + register "bks_off" = "1" + register "iocut_en" = "1" register "set_user_date" = "1" register "user_year" = "04" register "user_month" = "07"