* [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init
@ 2020-04-08 1:28 Bjorn Andersson
2020-04-08 9:34 ` Bryan O'Donoghue
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Bjorn Andersson @ 2020-04-08 1:28 UTC (permalink / raw)
To: Kishon Vijay Abraham I, Bryan O'Donoghue
Cc: Shawn Guo, linux-arm-msm, linux-kernel
The AHB clock must be on for qcom_snps_hsphy_init() to be able to write
the initialization sequence to the hardware, so move the clock
enablement to phy init and exit.
Fixes: 67b27dbeac4d ("phy: qualcomm: Add Synopsys 28nm Hi-Speed USB PHY driver")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c | 32 ++++++++++++++-------
1 file changed, 21 insertions(+), 11 deletions(-)
diff --git a/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c b/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
index d998e65c89c8..a52a9bf13b75 100644
--- a/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
+++ b/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
@@ -160,18 +160,11 @@ static int qcom_snps_hsphy_power_on(struct phy *phy)
ret = regulator_bulk_enable(VREG_NUM, priv->vregs);
if (ret)
return ret;
- ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
- if (ret)
- goto err_disable_regulator;
+
qcom_snps_hsphy_disable_hv_interrupts(priv);
qcom_snps_hsphy_exit_retention(priv);
return 0;
-
-err_disable_regulator:
- regulator_bulk_disable(VREG_NUM, priv->vregs);
-
- return ret;
}
static int qcom_snps_hsphy_power_off(struct phy *phy)
@@ -180,7 +173,6 @@ static int qcom_snps_hsphy_power_off(struct phy *phy)
qcom_snps_hsphy_enter_retention(priv);
qcom_snps_hsphy_enable_hv_interrupts(priv);
- clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
regulator_bulk_disable(VREG_NUM, priv->vregs);
return 0;
@@ -266,21 +258,39 @@ static int qcom_snps_hsphy_init(struct phy *phy)
struct hsphy_priv *priv = phy_get_drvdata(phy);
int ret;
- ret = qcom_snps_hsphy_reset(priv);
+ ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
if (ret)
return ret;
+ ret = qcom_snps_hsphy_reset(priv);
+ if (ret)
+ goto disable_clocks;
+
qcom_snps_hsphy_init_sequence(priv);
ret = qcom_snps_hsphy_por_reset(priv);
if (ret)
- return ret;
+ goto disable_clocks;
+
+ return 0;
+
+disable_clocks:
+ clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
+ return ret;
+}
+
+static int qcom_snps_hsphy_exit(struct phy *phy)
+{
+ struct hsphy_priv *priv = phy_get_drvdata(phy);
+
+ clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
return 0;
}
static const struct phy_ops qcom_snps_hsphy_ops = {
.init = qcom_snps_hsphy_init,
+ .exit = qcom_snps_hsphy_exit,
.power_on = qcom_snps_hsphy_power_on,
.power_off = qcom_snps_hsphy_power_off,
.set_mode = qcom_snps_hsphy_set_mode,
--
2.24.0
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init
2020-04-08 1:28 [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init Bjorn Andersson
@ 2020-04-08 9:34 ` Bryan O'Donoghue
2020-04-23 3:13 ` Bjorn Andersson
2020-04-28 4:55 ` Vinod Koul
2 siblings, 0 replies; 4+ messages in thread
From: Bryan O'Donoghue @ 2020-04-08 9:34 UTC (permalink / raw)
To: Bjorn Andersson, Kishon Vijay Abraham I
Cc: Shawn Guo, linux-arm-msm, linux-kernel
On 08/04/2020 02:28, Bjorn Andersson wrote:
> The AHB clock must be on for qcom_snps_hsphy_init() to be able to write
> the initialization sequence to the hardware, so move the clock
> enablement to phy init and exit.
>
> Fixes: 67b27dbeac4d ("phy: qualcomm: Add Synopsys 28nm Hi-Speed USB PHY driver")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> ---
> drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c | 32 ++++++++++++++-------
> 1 file changed, 21 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c b/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
> index d998e65c89c8..a52a9bf13b75 100644
> --- a/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
> +++ b/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
> @@ -160,18 +160,11 @@ static int qcom_snps_hsphy_power_on(struct phy *phy)
> ret = regulator_bulk_enable(VREG_NUM, priv->vregs);
> if (ret)
> return ret;
> - ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
> - if (ret)
> - goto err_disable_regulator;
> +
> qcom_snps_hsphy_disable_hv_interrupts(priv);
> qcom_snps_hsphy_exit_retention(priv);
>
> return 0;
> -
> -err_disable_regulator:
> - regulator_bulk_disable(VREG_NUM, priv->vregs);
> -
> - return ret;
> }
>
> static int qcom_snps_hsphy_power_off(struct phy *phy)
> @@ -180,7 +173,6 @@ static int qcom_snps_hsphy_power_off(struct phy *phy)
>
> qcom_snps_hsphy_enter_retention(priv);
> qcom_snps_hsphy_enable_hv_interrupts(priv);
> - clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
> regulator_bulk_disable(VREG_NUM, priv->vregs);
>
> return 0;
> @@ -266,21 +258,39 @@ static int qcom_snps_hsphy_init(struct phy *phy)
> struct hsphy_priv *priv = phy_get_drvdata(phy);
> int ret;
>
> - ret = qcom_snps_hsphy_reset(priv);
> + ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
> if (ret)
> return ret;
>
> + ret = qcom_snps_hsphy_reset(priv);
> + if (ret)
> + goto disable_clocks;
> +
> qcom_snps_hsphy_init_sequence(priv);
>
> ret = qcom_snps_hsphy_por_reset(priv);
> if (ret)
> - return ret;
> + goto disable_clocks;
> +
> + return 0;
> +
> +disable_clocks:
> + clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
> + return ret;
> +}
> +
> +static int qcom_snps_hsphy_exit(struct phy *phy)
> +{
> + struct hsphy_priv *priv = phy_get_drvdata(phy);
> +
> + clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
>
> return 0;
> }
>
> static const struct phy_ops qcom_snps_hsphy_ops = {
> .init = qcom_snps_hsphy_init,
> + .exit = qcom_snps_hsphy_exit,
> .power_on = qcom_snps_hsphy_power_on,
> .power_off = qcom_snps_hsphy_power_off,
> .set_mode = qcom_snps_hsphy_set_mode,
>
Makes sense to me
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init
2020-04-08 1:28 [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init Bjorn Andersson
2020-04-08 9:34 ` Bryan O'Donoghue
@ 2020-04-23 3:13 ` Bjorn Andersson
2020-04-28 4:55 ` Vinod Koul
2 siblings, 0 replies; 4+ messages in thread
From: Bjorn Andersson @ 2020-04-23 3:13 UTC (permalink / raw)
To: Kishon Vijay Abraham I, Bryan O'Donoghue
Cc: Shawn Guo, linux-arm-msm, linux-kernel
On Tue 07 Apr 18:28 PDT 2020, Bjorn Andersson wrote:
> The AHB clock must be on for qcom_snps_hsphy_init() to be able to write
> the initialization sequence to the hardware, so move the clock
> enablement to phy init and exit.
>
> Fixes: 67b27dbeac4d ("phy: qualcomm: Add Synopsys 28nm Hi-Speed USB PHY driver")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Kishon, can we have this picked up?
Thanks,
Bjorn
> ---
> drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c | 32 ++++++++++++++-------
> 1 file changed, 21 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c b/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
> index d998e65c89c8..a52a9bf13b75 100644
> --- a/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
> +++ b/drivers/phy/qualcomm/phy-qcom-usb-hs-28nm.c
> @@ -160,18 +160,11 @@ static int qcom_snps_hsphy_power_on(struct phy *phy)
> ret = regulator_bulk_enable(VREG_NUM, priv->vregs);
> if (ret)
> return ret;
> - ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
> - if (ret)
> - goto err_disable_regulator;
> +
> qcom_snps_hsphy_disable_hv_interrupts(priv);
> qcom_snps_hsphy_exit_retention(priv);
>
> return 0;
> -
> -err_disable_regulator:
> - regulator_bulk_disable(VREG_NUM, priv->vregs);
> -
> - return ret;
> }
>
> static int qcom_snps_hsphy_power_off(struct phy *phy)
> @@ -180,7 +173,6 @@ static int qcom_snps_hsphy_power_off(struct phy *phy)
>
> qcom_snps_hsphy_enter_retention(priv);
> qcom_snps_hsphy_enable_hv_interrupts(priv);
> - clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
> regulator_bulk_disable(VREG_NUM, priv->vregs);
>
> return 0;
> @@ -266,21 +258,39 @@ static int qcom_snps_hsphy_init(struct phy *phy)
> struct hsphy_priv *priv = phy_get_drvdata(phy);
> int ret;
>
> - ret = qcom_snps_hsphy_reset(priv);
> + ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks);
> if (ret)
> return ret;
>
> + ret = qcom_snps_hsphy_reset(priv);
> + if (ret)
> + goto disable_clocks;
> +
> qcom_snps_hsphy_init_sequence(priv);
>
> ret = qcom_snps_hsphy_por_reset(priv);
> if (ret)
> - return ret;
> + goto disable_clocks;
> +
> + return 0;
> +
> +disable_clocks:
> + clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
> + return ret;
> +}
> +
> +static int qcom_snps_hsphy_exit(struct phy *phy)
> +{
> + struct hsphy_priv *priv = phy_get_drvdata(phy);
> +
> + clk_bulk_disable_unprepare(priv->num_clks, priv->clks);
>
> return 0;
> }
>
> static const struct phy_ops qcom_snps_hsphy_ops = {
> .init = qcom_snps_hsphy_init,
> + .exit = qcom_snps_hsphy_exit,
> .power_on = qcom_snps_hsphy_power_on,
> .power_off = qcom_snps_hsphy_power_off,
> .set_mode = qcom_snps_hsphy_set_mode,
> --
> 2.24.0
>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init
2020-04-08 1:28 [PATCH] phy: qualcomm: usb-hs-28nm: Prepare clocks in init Bjorn Andersson
2020-04-08 9:34 ` Bryan O'Donoghue
2020-04-23 3:13 ` Bjorn Andersson
@ 2020-04-28 4:55 ` Vinod Koul
2 siblings, 0 replies; 4+ messages in thread
From: Vinod Koul @ 2020-04-28 4:55 UTC (permalink / raw)
To: Bjorn Andersson
Cc: Kishon Vijay Abraham I, Bryan O'Donoghue, Shawn Guo,
linux-arm-msm, linux-kernel
On 07-04-20, 18:28, Bjorn Andersson wrote:
> The AHB clock must be on for qcom_snps_hsphy_init() to be able to write
> the initialization sequence to the hardware, so move the clock
> enablement to phy init and exit.
Applied, thanks
--
~Vinod
^ permalink raw reply [flat|nested] 4+ messages in thread
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2020-04-28 4:55 ` Vinod Koul
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