GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

smaug: Set LDO2 voltage to 1.8V 

LDO2 regulator is used as an always-on reference for the droop alert
circuit. Set output voltage to match kernel settings.

CQ-DEPEND=CL:284649
BUG=chrome-os-partner:42305
BRANCH=None
TEST=Compiles successfully and boots to kernel prompt

Change-Id: I5ef4e266d8ec278dadffa846af8dc49b6d18c37e
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 611465f6248cba0ddce0083b431cb7ee17bc4b4c
Original-Change-Id: I58cc473452b871392d813387707a0b8288e46561
Original-Signed-off-by: Furquan Shaikh <furquan@google.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/284879
Original-Tested-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org>
Original-Trybot-Ready: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/10900
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Furquan Shaikh 2015-07-10 17:36:49 -07:00 committed by Patrick Georgi
parent 25fbe2ad82
commit 657deac015
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/mainboard/google/smaug/pmic.c
View File

@ -95,6 +95,13 @@ void pmic_init(unsigned bus)
pmic_write_reg_77620(bus, MAX77620_CNFG2SD_REG, 0x04, 1);
pmic_write_reg_77620(bus, MAX77620_SD1_REG, 0x2a, 1);
/*
* MAX77620: Set LDO2 output to 1.8V. LDO2 is used as always-on
* reference for the droop alert circuit. Match this setting with what
* the kernel expects.
*/
pmic_write_reg_77620(bus, MAX77620_CNFG1_L2_REG, 0x14, 1);
/* MAX77621: Set VOUT_REG to 1.0V - CPU VREG */
pmic_write_reg_77621(bus, MAX77621_VOUT_REG, 0xBF, 1);