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Subject[PATCH v13 2/3] phy: qcom-qmp: add regulator_set_load to dp phy
Date
This patch add regulator_set_load() before enable regulator at
DP phy driver.

Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
---
drivers/phy/qualcomm/phy-qcom-qmp.c | 40 ++++++++++++++++++++++++++++---------
1 file changed, 31 insertions(+), 9 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index b144ae1..26b290c 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -3075,6 +3075,17 @@ static const struct qmp_phy_init_tbl sm8450_qmp_gen4x2_pcie_pcs_misc_tbl[] = {
QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_G4_PRE_GAIN, 0x2e),
};

+/* list of regulators */
+struct qmp_regulator_data {
+ const char *name;
+ unsigned int enable_load;
+};
+
+struct qmp_regulator_data qmp_phy_vreg_l[] = {
+ { .name = "vdda-phy", .enable_load = 21800 },
+ { .name = "vdda-pll", .enable_load = 36000 },
+};
+
struct qmp_phy;

/* struct qmp_phy_cfg - per-PHY initialization config */
@@ -3129,7 +3140,7 @@ struct qmp_phy_cfg {
const char * const *reset_list;
int num_resets;
/* regulators to be requested */
- const char * const *vreg_list;
+ const struct qmp_regulator_data *vreg_list;
int num_vregs;

/* array of registers with different offsets */
@@ -3341,11 +3352,6 @@ static const char * const sdm845_pciephy_reset_l[] = {
"phy",
};

-/* list of regulators */
-static const char * const qmp_phy_vreg_l[] = {
- "vdda-phy", "vdda-pll",
-};
-
static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = {
.type = PHY_TYPE_USB3,
.nlanes = 1,
@@ -5488,16 +5494,32 @@ static int qcom_qmp_phy_vreg_init(struct device *dev, const struct qmp_phy_cfg *
{
struct qcom_qmp *qmp = dev_get_drvdata(dev);
int num = cfg->num_vregs;
- int i;
+ int ret, i;

qmp->vregs = devm_kcalloc(dev, num, sizeof(*qmp->vregs), GFP_KERNEL);
if (!qmp->vregs)
return -ENOMEM;

for (i = 0; i < num; i++)
- qmp->vregs[i].supply = cfg->vreg_list[i];
+ qmp->vregs[i].supply = cfg->vreg_list[i].name;

- return devm_regulator_bulk_get(dev, num, qmp->vregs);
+ ret = devm_regulator_bulk_get(dev, num, qmp->vregs);
+ if (ret) {
+ dev_err(dev, "failed at devm_regulator_bulk_get\n");
+ return ret;
+ }
+
+ for (i = 0; i < num; i++) {
+ ret = regulator_set_load(qmp->vregs[i].consumer,
+ cfg->vreg_list[i].enable_load);
+ if (ret) {
+ dev_err(dev, "failed to set load at %s\n",
+ qmp->vregs[i].supply);
+ return ret;
+ }
+ }
+
+ return 0;
}

static int qcom_qmp_phy_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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