From c5cc7422a415075dbb5b391eb75be1e01c8047b6 Mon Sep 17 00:00:00 2001 From: gongsc1 Date: Wed, 15 Sep 2021 16:32:53 +0800 Subject: [PATCH] power/charger: add walkaround to fix REGN side effect The REGN wake-up time is 500ms, and REGN will provide power for CBL_PWR_N, so press PWR key will make system reboot all the time. This walkaround is add 500ms at the end of rt9467 shutdown function to create a release window for I2C of rt9467. Change-Id: Ib428c31a718ac27bfc0ce077d5e7aa481e7fe648 Reviewed-on: https://gerrit.mot.com/2067201 SLTApproved: Slta Waiver SME-Granted: SME Approvals Granted Tested-by: Jira Key Reviewed-by: Huosheng Liao Submit-Approved: Jira Key --- drivers/power/rt9467_chg_mmi/rt9467_charger.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/power/rt9467_chg_mmi/rt9467_charger.c b/drivers/power/rt9467_chg_mmi/rt9467_charger.c index 2417edb6b931..6ca952257628 100644 --- a/drivers/power/rt9467_chg_mmi/rt9467_charger.c +++ b/drivers/power/rt9467_chg_mmi/rt9467_charger.c @@ -3273,6 +3273,8 @@ static void rt9467_shutdown(struct i2c_client *client) ret = rt9467_sw_reset(info); if (ret < 0) pr_notice("%s: sw reset fail\n", __func__); + // MMI_STOPSHIP : add delay to power off once pressing PWR key with EVT board + msleep(500); } }