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qcom-charger: smb138x: fix buck damage on v1.1 hardware

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Buck damage was seen to go away once the dead time were increased
in addition to increasing the OOB comparator threshold.

CRs-Fixed: 1055113
Change-Id: I8979d203fc7c35ec23e23874c8dd8f980a1cc619
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
This commit is contained in:
Abhijeet Dharmapurikar 2016-08-18 14:45:59 -07:00
parent aecb04a1c3
commit c56229417c
1 changed files with 21 additions and 1 deletions

22
drivers/power/qcom-charger/smb138x-charger.c
View file

@ -32,7 +32,11 @@
/* Registers that are not common to be mentioned in smb-reg.h */
#define SMB2CHG_MISC_ENG_SDCDC_CFG2 (MISC_BASE + 0xC1)
#define ENG_SDCDC_SEL_OOB_VTH_BIT BIT(0)
#define ENG_SDCDC_SEL_OOB_VTH_BIT BIT(0)
#define SMB2CHG_MISC_ENG_SDCDC_CFG6 (MISC_BASE + 0xC5)
#define DEAD_TIME_MASK GENMASK(7, 4)
#define HIGH_DEAD_TIME_MASK GENMASK(7, 4)
enum {
OOB_COMP_WA_BIT = BIT(0),
@ -648,6 +652,14 @@ static int smb138x_init_hw(struct smb138x *chip)
"Couldn't configure the oob comp threh rc = %d\n", rc);
return rc;
}
rc = smblib_masked_write(chg, SMB2CHG_MISC_ENG_SDCDC_CFG6,
DEAD_TIME_MASK, HIGH_DEAD_TIME_MASK);
if (rc < 0) {
dev_err(chg->dev,
"Couldn't configure the sdcdc cfg 6 reg rc = %d\n", rc);
return rc;
}
}
return rc;
@ -927,6 +939,14 @@ static int smb138x_slave_probe(struct smb138x *chip)
"Couldn't configure the oob comp threh rc = %d\n", rc);
return rc;
}
rc = smblib_masked_write(chg, SMB2CHG_MISC_ENG_SDCDC_CFG6,
DEAD_TIME_MASK, HIGH_DEAD_TIME_MASK);
if (rc < 0) {
dev_err(chg->dev,
"Couldn't configure the sdcdc cfg 6 reg rc = %d\n", rc);
return rc;
}
}
/* suspend usb input */