| Message ID | 1412677176-3850-3-git-send-email-gautam.vivek@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Vivek, > Exynos7 SoC has now separate gate control for 125MHz pipe3 phy > clock, as well as 60MHz utmi phy clock. > So get the same and control in the phy-exynos5-usbdrd driver. In case of the PHY the situation is pretty much the same as with DWC3 core. Here we should control 6 clocks to make Exynos7 USB DRD PHY working. By the way, the driver name phy-exynos5-usbdrd.c doesn't imply it supports Exynos7 :) > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > --- > .../devicetree/bindings/phy/samsung-phy.txt | 4 ++++ > drivers/phy/phy-exynos5-usbdrd.c | 22 > ++++++++++++++++++++ > 2 files changed, 26 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt > b/Documentation/devicetree/bindings/phy/samsung-phy.txt > index 15e0f2c..c2bc9dc 100644 > --- a/Documentation/devicetree/bindings/phy/samsung-phy.txt > +++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt > @@ -138,6 +138,10 @@ Required properties: > PHY operations, associated by phy name. It is used to > determine bit values for clock settings register. > For Exynos5420 this is given as 'sclk_usbphy30' in CMU. > + - optional clocks: Exynos7 SoC has now following additional > + gate clocks available: > + - phy_pipe: for PIPE3 phy > + - phy_utmi: for UTMI+ phy > - samsung,pmu-syscon: phandle for PMU system controller interface, > used to > control pmu registers for power isolation. > - #phy-cells : from the generic PHY bindings, must be 1; > diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy- > exynos5-usbdrd.c > index f756aca..013ee84 100644 > --- a/drivers/phy/phy-exynos5-usbdrd.c > +++ b/drivers/phy/phy-exynos5-usbdrd.c > @@ -148,6 +148,8 @@ struct exynos5_usbdrd_phy_drvdata { > * @dev: pointer to device instance of this platform device > * @reg_phy: usb phy controller register memory base > * @clk: phy clock for register access > + * @pipeclk: clock for pipe3 phy > + * @utmiclk: clock for utmi+ phy > * @drv_data: pointer to SoC level driver data structure > * @phys[]: array for 'EXYNOS5_DRDPHYS_NUM' number of PHY > * instances each with its 'phy' and 'phy_cfg'. > @@ -161,6 +163,8 @@ struct exynos5_usbdrd_phy { > struct device *dev; > void __iomem *reg_phy; > struct clk *clk; > + struct clk *pipeclk; > + struct clk *utmiclk; > const struct exynos5_usbdrd_phy_drvdata *drv_data; > struct phy_usb_instance { > struct phy *phy; > @@ -446,6 +450,8 @@ static int exynos5_usbdrd_phy_power_on(struct phy > *phy) > > dev_dbg(phy_drd->dev, "Request to power_on usbdrd_phy phy\n"); > > + clk_prepare_enable(phy_drd->utmiclk); > + clk_prepare_enable(phy_drd->pipeclk); > clk_prepare_enable(phy_drd->ref_clk); > > /* Enable VBUS supply */ > @@ -464,6 +470,8 @@ static int exynos5_usbdrd_phy_power_on(struct phy > *phy) > > fail_vbus: > clk_disable_unprepare(phy_drd->ref_clk); > + clk_disable_unprepare(phy_drd->pipeclk); > + clk_disable_unprepare(phy_drd->utmiclk); > > return ret; > } > @@ -483,6 +491,8 @@ static int exynos5_usbdrd_phy_power_off(struct phy > *phy) > regulator_disable(phy_drd->vbus); > > clk_disable_unprepare(phy_drd->ref_clk); > + clk_disable_unprepare(phy_drd->pipeclk); > + clk_disable_unprepare(phy_drd->utmiclk); > > return 0; > } > @@ -582,6 +592,18 @@ static int exynos5_usbdrd_phy_probe(struct > platform_device *pdev) > return PTR_ERR(phy_drd->clk); > } > > + phy_drd->pipeclk = devm_clk_get(dev, "phy_pipe"); > + if (IS_ERR(phy_drd->pipeclk)) { > + dev_info(dev, "PIPE3 phy operational clock not > specified\n"); > + phy_drd->pipeclk = NULL; > + } > + > + phy_drd->utmiclk = devm_clk_get(dev, "phy_utmi"); > + if (IS_ERR(phy_drd->utmiclk)) { > + dev_info(dev, "UTMI phy operational clock not specified\n"); > + phy_drd->utmiclk = NULL; > + } > + > phy_drd->ref_clk = devm_clk_get(dev, "ref"); > if (IS_ERR(phy_drd->ref_clk)) { > dev_err(dev, "Failed to get reference clock of usbdrd > phy\n"); > -- > 1.7.10.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, On Tuesday 07 October 2014 03:49 PM, Vivek Gautam wrote: > Exynos7 SoC has now separate gate control for 125MHz pipe3 phy > clock, as well as 60MHz utmi phy clock. > So get the same and control in the phy-exynos5-usbdrd driver. > > Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> > --- > .../devicetree/bindings/phy/samsung-phy.txt | 4 ++++ > drivers/phy/phy-exynos5-usbdrd.c | 22 ++++++++++++++++++++ > 2 files changed, 26 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt > index 15e0f2c..c2bc9dc 100644 > --- a/Documentation/devicetree/bindings/phy/samsung-phy.txt > +++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt > @@ -138,6 +138,10 @@ Required properties: > PHY operations, associated by phy name. It is used to > determine bit values for clock settings register. > For Exynos5420 this is given as 'sclk_usbphy30' in CMU. > + - optional clocks: Exynos7 SoC has now following additional > + gate clocks available: > + - phy_pipe: for PIPE3 phy > + - phy_utmi: for UTMI+ phy > - samsung,pmu-syscon: phandle for PMU system controller interface, used to > control pmu registers for power isolation. > - #phy-cells : from the generic PHY bindings, must be 1; > diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c > index f756aca..013ee84 100644 > --- a/drivers/phy/phy-exynos5-usbdrd.c > +++ b/drivers/phy/phy-exynos5-usbdrd.c > @@ -148,6 +148,8 @@ struct exynos5_usbdrd_phy_drvdata { > * @dev: pointer to device instance of this platform device > * @reg_phy: usb phy controller register memory base > * @clk: phy clock for register access > + * @pipeclk: clock for pipe3 phy > + * @utmiclk: clock for utmi+ phy > * @drv_data: pointer to SoC level driver data structure > * @phys[]: array for 'EXYNOS5_DRDPHYS_NUM' number of PHY > * instances each with its 'phy' and 'phy_cfg'. > @@ -161,6 +163,8 @@ struct exynos5_usbdrd_phy { > struct device *dev; > void __iomem *reg_phy; > struct clk *clk; > + struct clk *pipeclk; > + struct clk *utmiclk; > const struct exynos5_usbdrd_phy_drvdata *drv_data; > struct phy_usb_instance { > struct phy *phy; > @@ -446,6 +450,8 @@ static int exynos5_usbdrd_phy_power_on(struct phy *phy) > > dev_dbg(phy_drd->dev, "Request to power_on usbdrd_phy phy\n"); > > + clk_prepare_enable(phy_drd->utmiclk); > + clk_prepare_enable(phy_drd->pipeclk); We can have a separate function for powering on/off usb3 phy and usb2 phy independently. That way if the USB controller is operating only on high speed mode, the pipe clock need not be enabled at all. I think we should create separate PHYs (phy_create) for usb2 phy and usb3 phy here. Please refer how Lee Jones did that for miphy365x modelling each PHY as a child node to the PHY provider and doing phy_create for each child node. Thanks Kishon -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt index 15e0f2c..c2bc9dc 100644 --- a/Documentation/devicetree/bindings/phy/samsung-phy.txt +++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt @@ -138,6 +138,10 @@ Required properties: PHY operations, associated by phy name. It is used to determine bit values for clock settings register. For Exynos5420 this is given as 'sclk_usbphy30' in CMU. + - optional clocks: Exynos7 SoC has now following additional + gate clocks available: + - phy_pipe: for PIPE3 phy + - phy_utmi: for UTMI+ phy - samsung,pmu-syscon: phandle for PMU system controller interface, used to control pmu registers for power isolation. - #phy-cells : from the generic PHY bindings, must be 1; diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c index f756aca..013ee84 100644 --- a/drivers/phy/phy-exynos5-usbdrd.c +++ b/drivers/phy/phy-exynos5-usbdrd.c @@ -148,6 +148,8 @@ struct exynos5_usbdrd_phy_drvdata { * @dev: pointer to device instance of this platform device * @reg_phy: usb phy controller register memory base * @clk: phy clock for register access + * @pipeclk: clock for pipe3 phy + * @utmiclk: clock for utmi+ phy * @drv_data: pointer to SoC level driver data structure * @phys[]: array for 'EXYNOS5_DRDPHYS_NUM' number of PHY * instances each with its 'phy' and 'phy_cfg'. @@ -161,6 +163,8 @@ struct exynos5_usbdrd_phy { struct device *dev; void __iomem *reg_phy; struct clk *clk; + struct clk *pipeclk; + struct clk *utmiclk; const struct exynos5_usbdrd_phy_drvdata *drv_data; struct phy_usb_instance { struct phy *phy; @@ -446,6 +450,8 @@ static int exynos5_usbdrd_phy_power_on(struct phy *phy) dev_dbg(phy_drd->dev, "Request to power_on usbdrd_phy phy\n"); + clk_prepare_enable(phy_drd->utmiclk); + clk_prepare_enable(phy_drd->pipeclk); clk_prepare_enable(phy_drd->ref_clk); /* Enable VBUS supply */ @@ -464,6 +470,8 @@ static int exynos5_usbdrd_phy_power_on(struct phy *phy) fail_vbus: clk_disable_unprepare(phy_drd->ref_clk); + clk_disable_unprepare(phy_drd->pipeclk); + clk_disable_unprepare(phy_drd->utmiclk); return ret; } @@ -483,6 +491,8 @@ static int exynos5_usbdrd_phy_power_off(struct phy *phy) regulator_disable(phy_drd->vbus); clk_disable_unprepare(phy_drd->ref_clk); + clk_disable_unprepare(phy_drd->pipeclk); + clk_disable_unprepare(phy_drd->utmiclk); return 0; } @@ -582,6 +592,18 @@ static int exynos5_usbdrd_phy_probe(struct platform_device *pdev) return PTR_ERR(phy_drd->clk); } + phy_drd->pipeclk = devm_clk_get(dev, "phy_pipe"); + if (IS_ERR(phy_drd->pipeclk)) { + dev_info(dev, "PIPE3 phy operational clock not specified\n"); + phy_drd->pipeclk = NULL; + } + + phy_drd->utmiclk = devm_clk_get(dev, "phy_utmi"); + if (IS_ERR(phy_drd->utmiclk)) { + dev_info(dev, "UTMI phy operational clock not specified\n"); + phy_drd->utmiclk = NULL; + } + phy_drd->ref_clk = devm_clk_get(dev, "ref"); if (IS_ERR(phy_drd->ref_clk)) { dev_err(dev, "Failed to get reference clock of usbdrd phy\n");
Exynos7 SoC has now separate gate control for 125MHz pipe3 phy clock, as well as 60MHz utmi phy clock. So get the same and control in the phy-exynos5-usbdrd driver. Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com> --- .../devicetree/bindings/phy/samsung-phy.txt | 4 ++++ drivers/phy/phy-exynos5-usbdrd.c | 22 ++++++++++++++++++++ 2 files changed, 26 insertions(+)