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regulator: qpnp-lcdb: remove workaround for LCDB regulation issue

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Remove workaround added earlier for PM7325B LCDB regulation issue
as per HW recommendation.

Change-Id: I4d0e5087df3ca2ae217b74ea3bdc29035da7b97d
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>
This commit is contained in:
Jishnu Prakash 2021-02-03 14:11:22 +05:30
commit 8033cb6de5
1 changed files with 0 additions and 37 deletions
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37
drivers/regulator/qpnp-lcdb-regulator.c
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@ -147,11 +147,6 @@
#define SET_OUTPUT_VOLTAGE_MASK GENMASK(4, 0)
#define PM7325B_SET_OUTPUT_VOLTAGE_MASK GENMASK(5, 0)
#define LCDB_LDO_TRAN_CTL_REG 0x72
#define EN_LDO_TRAN_DET_BIT BIT(7)
#define CLR_LDO_UV_TIME_US 0x4
#define CLR_LDO_UV_TIME_US_SHIFT 4
#define LCDB_LDO_VREG_OK_CTL_REG 0x75
#define VREG_OK_DEB_MASK GENMASK(1, 0)
@ -362,7 +357,6 @@ enum lcdb_settings_index {
enum lcdb_wa_flags {
NCP_SCP_DISABLE_WA = BIT(0),
FORCE_PD_ENABLE_WA = BIT(1),
LDO_UNDERSHOOT_WA = BIT(2),
};
static const u32 soft_start_us[] = {
@ -1012,16 +1006,6 @@ static int qpnp_lcdb_enable(struct qpnp_lcdb *lcdb)
return 0;
}
if (lcdb->wa_flags & LDO_UNDERSHOOT_WA) {
/* Workaround to fix LCDB out of regulation issue */
val = CLR_LDO_UV_TIME_US << CLR_LDO_UV_TIME_US_SHIFT;
val |= EN_LDO_TRAN_DET_BIT;
rc = qpnp_lcdb_write(lcdb, lcdb->base + LCDB_LDO_TRAN_CTL_REG,
&val, 1);
if (rc < 0)
return rc;
}
if (lcdb->ttw_enable) {
rc = qpnp_lcdb_ttw_exit(lcdb);
if (rc < 0) {
@ -1117,15 +1101,6 @@ static int qpnp_lcdb_disable(struct qpnp_lcdb *lcdb)
if (!lcdb->lcdb_enabled)
return 0;
if (lcdb->wa_flags & LDO_UNDERSHOOT_WA) {
/* Workaround to fix LCDB out of regulation issue */
val = CLR_LDO_UV_TIME_US << CLR_LDO_UV_TIME_US_SHIFT;
rc = qpnp_lcdb_write(lcdb, lcdb->base + LCDB_LDO_TRAN_CTL_REG,
&val, 1);
if (rc < 0)
return rc;
}
if (lcdb->ttw_enable) {
switch (lcdb->subtype) {
case PM660L:
@ -2406,9 +2381,6 @@ static int qpnp_lcdb_init_bst(struct qpnp_lcdb *lcdb)
static void qpnp_lcdb_pmic_config(struct qpnp_lcdb *lcdb)
{
int rc;
u8 val[2];
switch (lcdb->subtype) {
case PMI632:
case PM6150L:
@ -2419,15 +2391,6 @@ static void qpnp_lcdb_pmic_config(struct qpnp_lcdb *lcdb)
break;
}
if (lcdb->subtype == PM7325B) {
rc = qpnp_lcdb_read(lcdb, lcdb->base + LCDB_REVISION3_REG,
val, 2);
/* This SW W/A is applicable for PM7325B 1.0 HW only */
if (!rc && val[0] == 0 && val[1] == 1)
lcdb->wa_flags |= LDO_UNDERSHOOT_WA;
}
pr_debug("LCDB wa_flags = 0x%2x\n", lcdb->wa_flags);
}