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rush: PMIC: initial AS3722 PMIC writes for Rush 

Still waiting on VDD_CPU value, etc. from board guys, but this is a start.

BUG=None
BRANCH=None
TEST=Built and flashed rush, saw 'PMIC init done' string OK.

Original-Change-Id: I6f8b16c4ebf1e9c159f8175d59262119ef0e498f
Original-Signed-off-by: Tom Warren <twarren@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/206412
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Original-Commit-Queue: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 96a9ff8f632c2b9bf3f81f5b8fc4f3b6784a02bc)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I9d3d7ff55f2d6ca88ebdcc8ad1d7de135f5136d2
Reviewed-on: http://review.coreboot.org/8582
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
This commit is contained in:
Tom Warren 2014-07-01 17:08:27 -07:00 committed by Marc Jones
parent d2907c1e02
commit dfe7ea2b4e
1 changed files with 6 additions and 10 deletions
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16
src/mainboard/google/rush/pmic.c
View File

@ -92,19 +92,13 @@ void pmic_init(unsigned bus)
/* Restore PMIC POR defaults, in case kernel changed 'em */
pmic_slam_defaults(bus);
/* First set VDD_CPU to 1.2V, then enable the VDD_CPU regulator. */
if (board_id() == 0)
pmic_write_reg(bus, 0x00, 0x3c, 1);
else
pmic_write_reg(bus, 0x00, 0x50, 1);
/* SDO0: Set VDD_CPU to 1.2V. */
pmic_write_reg(bus, 0x00, 0x50, 1);
/* First set VDD_GPU to 1.0V, then enable the VDD_GPU regulator. */
/* SDO6: Set VDD_GPU to 1.0V. */
pmic_write_reg(bus, 0x06, 0x28, 1);
/*
* First set +1.2V_GEN_AVDD to 1.2V, then enable the +1.2V_GEN_AVDD
* regulator.
*/
/* LDO2: Set +1.2V_GEN_AVDD to 1.2V */
pmic_write_reg(bus, 0x12, 0x10, 1);
/*
@ -113,4 +107,6 @@ void pmic_init(unsigned bus)
*/
pmic_write_reg(bus, 0x0c, 0x07, 0);
pmic_write_reg(bus, 0x20, 0x10, 1);
printk(BIOS_DEBUG, "PMIC init done\n");
}