A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-07 04:12:04 -04:00
Code Issues Projects Releases Packages Wiki Activity

FROMGIT: power: reset: sc27xx: Power off the external subsystems' connection

Browse source 
When powering off the whole system, we should power off some external
subsystems' connection firstly, otherwise some external subsystems
will hold some power and result in powering down abnormally.

bug: 146864653
Signed-off-by: Sherry Zong <sherry.zong@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
(cherry picked from commit 6cdd5b09cbe67365c42aee539f6fd00f2ecfdaab
https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply.git for-next)
This commit is contained in:
Sherry Zong 2020-03-09 16:18:44 +08:00 • committed by Todd Kjos
commit 3a2e32d2a4
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/power/reset/sc27xx-poweroff.c
View file

@ -13,6 +13,8 @@
#define SC27XX_PWR_PD_HW 0xc2c
#define SC27XX_PWR_OFF_EN BIT(0)
#define SC27XX_SLP_CTRL 0xdf0
#define SC27XX_LDO_XTL_EN BIT(3)
static struct regmap *regmap;
@ -40,6 +42,9 @@ static struct syscore_ops poweroff_syscore_ops = {
static void sc27xx_poweroff_do_poweroff(void)
{
/* Disable the external subsys connection's power firstly */
regmap_write(regmap, SC27XX_SLP_CTRL, SC27XX_LDO_XTL_EN);
regmap_write(regmap, SC27XX_PWR_PD_HW, SC27XX_PWR_OFF_EN);
}