On 5/18/2022 10:12 AM, Dmitry Baryshkov wrote:
On Wed, 18 May 2022 at 19:43, Kuogee Hsieh <quic_khs...@quicinc.com> wrote:
This patch add regulator_set_load() to both eDP and DP phy driver
to have totally control regulators.
Changes in v2:
-- no regulator_set_laod() before disable regulator
Signed-off-by: Kuogee Hsieh <quic_khs...@quicinc.com>
---
drivers/phy/qualcomm/phy-qcom-edp.c | 25 +++++++++++++++++++++----
drivers/phy/qualcomm/phy-qcom-qmp.c | 13 +++++++++++++
Split into -edp and -qmp part.
2 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c
b/drivers/phy/qualcomm/phy-qcom-edp.c
index cacd32f..9b55095 100644
--- a/drivers/phy/qualcomm/phy-qcom-edp.c
+++ b/drivers/phy/qualcomm/phy-qcom-edp.c
@@ -87,17 +87,24 @@ struct qcom_edp {
struct clk_bulk_data clks[2];
struct regulator_bulk_data supplies[2];
+ int enable_load[2];
+ int disable_load[2];
As noticed in the review of the previous patch, disable_load is unnecessary.
};
static int qcom_edp_phy_init(struct phy *phy)
{
struct qcom_edp *edp = phy_get_drvdata(phy);
int ret;
+ int num_consumers = ARRAY_SIZE(edp->supplies);
+ int i;
- ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies);
+ ret = regulator_bulk_enable(num_consumers, edp->supplies);
if (ret)
return ret;
+ for (i = num_consumers - 1; i >= 0; --i)
+ regulator_set_load(edp->supplies[i].consumer,
edp->enable_load[i]);
+
ret = clk_bulk_prepare_enable(ARRAY_SIZE(edp->clks), edp->clks);
if (ret)
goto out_disable_supplies;
@@ -425,9 +432,15 @@ static int qcom_edp_phy_power_off(struct phy *phy)
static int qcom_edp_phy_exit(struct phy *phy)
{
struct qcom_edp *edp = phy_get_drvdata(phy);
+ int num_consumers = ARRAY_SIZE(edp->supplies);
+ int i;
clk_bulk_disable_unprepare(ARRAY_SIZE(edp->clks), edp->clks);
- regulator_bulk_disable(ARRAY_SIZE(edp->supplies), edp->supplies);
+
+ for (i = num_consumers - 1; i >= 0; --i)
+ regulator_set_load(edp->supplies[i].consumer,
edp->disable_load[i]);
+
+ regulator_bulk_disable(num_consumers, edp->supplies);
return 0;
}
@@ -633,8 +646,12 @@ static int qcom_edp_phy_probe(struct platform_device *pdev)
if (ret)
return ret;
- edp->supplies[0].supply = "vdda-phy";
- edp->supplies[1].supply = "vdda-pll";
+ edp->supplies[0].supply = "vdda-1p2";
+ edp->supplies[1].supply = "vdda-0p9";
NAK, You can not randomly change supply names.
if you do no change here, then we have to change dtsi.
They are not match.
+ edp->enable_load[0] = 21800; /* 1.2 V */
+ edp->enable_load[1] = 36000; /* 1.2 V */
+ edp->disable_load[0] = 4; /* 0.9 V */
+ edp->disable_load[1] = 4; /* 10.9V */
Again, 10.9V here. Kuogee. Have you read the review points?
I have read it. but forget to make change at edp file.
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(edp->supplies),
edp->supplies);
if (ret)
return ret;
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c
b/drivers/phy/qualcomm/phy-qcom-qmp.c
index b144ae1..0a4c8a8 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -3130,6 +3130,7 @@ struct qmp_phy_cfg {
int num_resets;
/* regulators to be requested */
const char * const *vreg_list;
+ const unsigned int *vreg_enable_load;
int num_vregs;
/* array of registers with different offsets */
@@ -3346,6 +3347,10 @@ static const char * const qmp_phy_vreg_l[] = {
"vdda-phy", "vdda-pll",
};
+static const unsigned int qmp_phy_vreg_enable_load[] = {
+ 21800, 36000
+};
+
static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = {
.type = PHY_TYPE_USB3,
.nlanes = 1,
@@ -4072,6 +4077,7 @@ static const struct qmp_phy_cfg sm8250_usb3phy_cfg = {
.reset_list = msm8996_usb3phy_reset_l,
.num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l),
.vreg_list = qmp_phy_vreg_l,
+ .vreg_enable_load = qmp_phy_vreg_enable_load,
.num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = qmp_v4_usb3phy_regs_layout,
@@ -4139,6 +4145,7 @@ static const struct qmp_phy_cfg sm8250_dpphy_cfg = {
.reset_list = msm8996_usb3phy_reset_l,
.num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l),
.vreg_list = qmp_phy_vreg_l,
+ .vreg_enable_load = qmp_phy_vreg_enable_load,
.num_vregs = ARRAY_SIZE(qmp_phy_vreg_l),
.regs = qmp_v4_usb3phy_regs_layout,
@@ -5008,6 +5015,11 @@ static int qcom_qmp_phy_com_init(struct qmp_phy *qphy)
return 0;
}
+ if (cfg->vreg_enable_load) {
+ for (i = cfg->num_vregs - 1; i >= 0; --i)
What's the point of iterating the list backwards?
do no know,
I just follow the order from regulator_bulk_enable()
+ regulator_set_load(qmp->vregs[i].consumer,
cfg->vreg_enable_load[i]);
+ }
+
/* turn on regulator supplies */
ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
if (ret) {
@@ -5116,6 +5128,7 @@ static int qcom_qmp_phy_com_exit(struct qmp_phy *qphy)
clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
+ /* no minimum load set required before disable regulator */
No otneed for the comment.
regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
mutex_unlock(&qmp->phy_mutex);
--
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