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reef: ensure board can boot again after entring G3 after SW sync

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When SW sync is enabled and the board enters G3 after being up
there was no way to boot the board again because the
system_jumped_to_this_image() check disallowed the pmic startup
sequence. One needs to check if the pmic is also already on
before bailing on the pmic startup sequence.

BUG=chrome-os-partner:56530
BRANCH=None
TEST=Booted. Jumped to RW EC. Shutdown system. Can boot again once
     G3 entered.

Change-Id: I71670ceee09536a282479d1eca6a3ce264f0f5d3
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/374080
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
This commit is contained in:
Aaron Durbin
2016-08-23 10:19:20 -05:00
committed by chrome-bot
parent d0383d8814
commit aee8407f4e
1 changed files with 6 additions and 2 deletions
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8
board/reef/board.c
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@@ -356,8 +356,12 @@ const struct button_config buttons[CONFIG_BUTTON_COUNT] = {
/* Called by APL power state machine when transitioning from G3 to S5 */
static void chipset_pre_init(void)
{
/* No need to re-init PMIC since settings are sticky across sysjump */
if (system_jumped_to_this_image())
/*
* No need to re-init PMIC since settings are sticky across sysjump.
* However, be sure to check that PMIC is already enabled. If it is
* then there's no need to re-sequence the PMIC.
*/
if (system_jumped_to_this_image() && gpio_get_level(GPIO_PMIC_EN))
return;
#if IS_PROTO == 0