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nyan: Set the CPU voltage differently depending on which PMIC is in use.

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The PMIC used on the older pixel based nyan boards and the newer boards are
different and use a different base offset for their voltage settings. We need
to set them to different values in order to get the correct voltage out.

BUG=None
TEST=With this and other changes, built and booted on old and new nyan boards.
BRANCH=None

Change-Id: Ie37b11802d8c08f07f37c350ceb732f519b69280
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/176905
Reviewed-by: Julius Werner <jwerner@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
This commit is contained in:
Gabe Black 2013-11-14 13:46:08 -08:00 • committed by chrome-internal-fetch
commit 31507f6a57
1 changed files with 4 additions and 1 deletions
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5
src/mainboard/google/nyan/pmic.c
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@ -44,7 +44,10 @@ void pmic_init(unsigned bus)
*/
/* First set VDD_CPU to 1.0V, then enable the VDD_CPU regulator. */
pmic_write_reg(bus, 0x00, 0x28);
if (CONFIG_NYAN_IN_A_PIXEL)
pmic_write_reg(bus, 0x00, 0x28);
else
pmic_write_reg(bus, 0x00, 0x3c);
/* First set VDD_GPU to 1.0V, then enable the VDD_GPU regulator. */
pmic_write_reg(bus, 0x06, 0x28);