| Message ID | 1652909790-16245-2-git-send-email-quic_khsieh@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | eDP/DP Phy vdda realted function | expand |
On Thu, 19 May 2022 at 00:36, Kuogee Hsieh <quic_khsieh@quicinc.com> wrote: > > This patch add regulator_set_load() before enable regulator at > eDP phy driver. > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > --- > drivers/phy/qualcomm/phy-qcom-edp.c | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c > index cacd32f..fbe0be0 100644 > --- a/drivers/phy/qualcomm/phy-qcom-edp.c > +++ b/drivers/phy/qualcomm/phy-qcom-edp.c > @@ -87,14 +87,20 @@ struct qcom_edp { > > struct clk_bulk_data clks[2]; > struct regulator_bulk_data supplies[2]; > + int enable_load[2]; > }; > > 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); No need to. ARRAY_SIZE is compile-time calculated. > + int i; > > - ret = regulator_bulk_enable(ARRAY_SIZE(edp->supplies), edp->supplies); > + for (i = num_consumers - 1; i >= 0; --i) > + regulator_set_load(edp->supplies[i].consumer, edp->enable_load[i]); Please. Change this to the ascending order or provide a good description why it's done the other way. Your pointer to regulator_bulk_enable() is not valid, as it processes arrays in the ascending order. > + > + ret = regulator_bulk_enable(num_consumers, edp->supplies); > if (ret) > return ret; > > @@ -635,6 +641,8 @@ static int qcom_edp_phy_probe(struct platform_device *pdev) > > edp->supplies[0].supply = "vdda-phy"; > edp->supplies[1].supply = "vdda-pll"; > + edp->enable_load[0] = 21800; /* load for 1.2 V vdda-phy supply */ > + edp->enable_load[1] = 36000; /* load for 1.2 V vdda-pll supply */ Isn't vdda-pll 0.9V? On sm8250 I see VDD_A_USB0_SS_DP_1P2 and VDD_A_USB0_SS_DP_CORE (which is 0.9V). > ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(edp->supplies), edp->supplies); > if (ret) > return ret; > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c index cacd32f..fbe0be0 100644 --- a/drivers/phy/qualcomm/phy-qcom-edp.c +++ b/drivers/phy/qualcomm/phy-qcom-edp.c @@ -87,14 +87,20 @@ struct qcom_edp { struct clk_bulk_data clks[2]; struct regulator_bulk_data supplies[2]; + int enable_load[2]; }; 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); + for (i = num_consumers - 1; i >= 0; --i) + regulator_set_load(edp->supplies[i].consumer, edp->enable_load[i]); + + ret = regulator_bulk_enable(num_consumers, edp->supplies); if (ret) return ret; @@ -635,6 +641,8 @@ static int qcom_edp_phy_probe(struct platform_device *pdev) edp->supplies[0].supply = "vdda-phy"; edp->supplies[1].supply = "vdda-pll"; + edp->enable_load[0] = 21800; /* load for 1.2 V vdda-phy supply */ + edp->enable_load[1] = 36000; /* load for 1.2 V vdda-pll supply */ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(edp->supplies), edp->supplies); if (ret) return ret;
This patch add regulator_set_load() before enable regulator at eDP phy driver. Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> --- drivers/phy/qualcomm/phy-qcom-edp.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)