From c439109359b91e597c06e9532f812931ed7fd0a2 Mon Sep 17 00:00:00 2001 From: Werner Zeh Date: Thu, 29 Jun 2017 08:56:45 +0200 Subject: 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 Reviewed-on: https://review.coreboot.org/20413 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/mainboard/siemens/mc_bdx1/devicetree.cb | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'src/mainboard/siemens') diff --git a/src/mainboard/siemens/mc_bdx1/devicetree.cb b/src/mainboard/siemens/mc_bdx1/devicetree.cb index 543786b43c..8bb582e383 100644 --- a/src/mainboard/siemens/mc_bdx1/devicetree.cb +++ b/src/mainboard/siemens/mc_bdx1/devicetree.cb @@ -12,7 +12,10 @@ chip soc/intel/fsp_broadwell_de 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" -- cgit v1.2.3