[PATCH 0/7][v5]Add OTG support for FSL socs

[PATCH 0/7][v5]Add OTG support for FSL socs

[Ramneek Mehresh]

Add support for otg for all freescale socs having internal
usb phy.

Ramneek Mehresh (7):
  usb:fsl:otg: Make fsl otg driver as tristate
  usb:fsl:otg: Add controller version based ULPI and UTMI phy
  usb:fsl:otg: Add support to add/remove usb host driver
  usb:fsl:otg: Signal host drv when host is otg
  usb:fsl:otg: Modify otg_event to start host drv
  usb:fsl:otg: Combine host/gadget start/resume for ID change
  usb:fsl:otg: Add host-gadget drv sync delay

 drivers/usb/host/ehci-fsl.c   | 73 +++++++++++++++++++++++++++++++------------
 drivers/usb/host/ehci-fsl.h   | 16 ++++++++++
 drivers/usb/phy/Kconfig       |  2 +-
 drivers/usb/phy/phy-fsl-usb.c | 58 +++++++++++++++++++++++++---------
 drivers/usb/phy/phy-fsl-usb.h |  7 +++++
 include/linux/usb.h           |  1 +
 6 files changed, 122 insertions(+), 35 deletions(-)

--
Changes for v5:
	- moved "is_otg" definition from 4/7 to 3/7
	  in order to fix compilation issue.
1.8.3.1

[PATCH 1/7][v5]usb:fsl:otg: Make fsl otg driver as tristate

[Ramneek Mehresh]

Provide option to load fsl otg driver as loadable module.

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
---
 drivers/usb/phy/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 22e8ecb..b6de4a7 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -19,7 +19,7 @@ config AB8500_USB
 	  in host mode, low speed.
 
 config FSL_USB2_OTG
-	bool "Freescale USB OTG Transceiver Driver"
+	tristate "Freescale USB OTG Transceiver Driver"
 	depends on USB_EHCI_FSL && USB_FSL_USB2 && USB_OTG_FSM && PM
 	select USB_PHY
 	help
-- 
1.8.3.1

[PATCH 2/7][v5]usb:fsl:otg: Add controller version based ULPI and UTMI phy

[Ramneek Mehresh]

Add controller version based ULPI and UTMI phy
initialization for otg driver.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
---
 drivers/usb/phy/phy-fsl-usb.c | 20 ++++++++++++++++++++
 drivers/usb/phy/phy-fsl-usb.h |  7 +++++++
 2 files changed, 27 insertions(+)

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index 94eb292..4e58aee 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -923,12 +923,32 @@ int usb_otg_start(struct platform_device *pdev)
 	temp &= ~(PORTSC_PHY_TYPE_SEL | PORTSC_PTW);
 	switch (pdata->phy_mode) {
 	case FSL_USB2_PHY_ULPI:
+		if (pdata->controller_ver) {
+			/* controller version 1.6 or above */
+			setbits32(&p_otg->dr_mem_map->control,
+				USB_CTRL_ULPI_PHY_CLK_SEL);
+			/*
+			 * Due to controller issue of PHY_CLK_VALID in ULPI
+			 * mode, set USB_CTRL_USB_EN before checking
+			 * PHY_CLK_VALID, otherwise PHY_CLK_VALID doesn't work
+			 */
+			clrsetbits_be32(&p_otg->dr_mem_map->control,
+				USB_CTRL_UTMI_PHY_EN, USB_CTRL_IOENB);
+		}
 		temp |= PORTSC_PTS_ULPI;
 		break;
 	case FSL_USB2_PHY_UTMI_WIDE:
 		temp |= PORTSC_PTW_16BIT;
 		/* fall through */
 	case FSL_USB2_PHY_UTMI:
+		if (pdata->controller_ver) {
+			/* controller version 1.6 or above */
+			setbits32(&p_otg->dr_mem_map->control,
+				USB_CTRL_UTMI_PHY_EN);
+			/* Delay for UTMI PHY CLK to become stable - 10ms */
+			mdelay(FSL_UTMI_PHY_DLY);
+		}
+		setbits32(&p_otg->dr_mem_map->control, USB_CTRL_UTMI_PHY_EN);
 		temp |= PORTSC_PTS_UTMI;
 		/* fall through */
 	default:
diff --git a/drivers/usb/phy/phy-fsl-usb.h b/drivers/usb/phy/phy-fsl-usb.h
index 2314995..4a78fb3 100644
--- a/drivers/usb/phy/phy-fsl-usb.h
+++ b/drivers/usb/phy/phy-fsl-usb.h
@@ -199,6 +199,13 @@
 /* control Register Bit Masks */
 #define  USB_CTRL_IOENB			(0x1<<2)
 #define  USB_CTRL_ULPI_INT0EN		(0x1<<0)
+#define  USB_CTRL_WU_INT_EN		(0x1<<1)
+#define  USB_CTRL_LINE_STATE_FILTER__EN	(0x1<<3)
+#define  USB_CTRL_KEEP_OTG_ON		(0x1<<4)
+#define  USB_CTRL_OTG_PORT		(0x1<<5)
+#define  USB_CTRL_PLL_RESET		(0x1<<8)
+#define  USB_CTRL_UTMI_PHY_EN		(0x1<<9)
+#define  USB_CTRL_ULPI_PHY_CLK_SEL	(0x1<<10)
 
 /* BCSR5 */
 #define BCSR5_INT_USB			(0x02)
-- 
1.8.3.1

[PATCH 3/7][v5]usb:fsl:otg: Add support to add/remove usb host driver

[Ramneek Mehresh]

Add workqueue to add/remove host driver (outside
interrupt context) upon each id change, and to
remove host driver upon otg initialization by changing
have_hcd variable.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
---
 drivers/usb/host/ehci-fsl.c | 73 ++++++++++++++++++++++++++++++++-------------
 drivers/usb/host/ehci-fsl.h | 16 ++++++++++
 include/linux/usb.h         |  1 +
 3 files changed, 70 insertions(+), 20 deletions(-)

diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 3b6eb21..a01860d 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -44,6 +44,31 @@
 
 static struct hc_driver __read_mostly fsl_ehci_hc_driver;
 
+static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
+{
+	return (struct ehci_fsl *)hcd_to_ehci(hcd)->priv;
+}
+
+static void do_change_hcd(struct work_struct *work)
+{
+	struct ehci_fsl *ehci_fsl = container_of(work, struct ehci_fsl,
+					change_hcd_work);
+	struct usb_hcd *hcd = ehci_fsl->hcd;
+	void __iomem *non_ehci = hcd->regs;
+	int retval;
+
+	if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) {
+		writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE);
+		/* host, gadget and otg share same int line */
+		retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
+		if (retval == 0)
+			ehci_fsl->have_hcd = 1;
+	} else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) {
+		usb_remove_hcd(hcd);
+		ehci_fsl->have_hcd = 0;
+	}
+}
+
 /* configure so an HC device and id are always provided */
 /* always called with process context; sleeping is OK */
 
@@ -147,11 +172,15 @@ static int fsl_ehci_drv_probe(struct platform_device *pdev)
 		goto err2;
 	device_wakeup_enable(hcd->self.controller);
 
-#ifdef CONFIG_USB_OTG
 	if (pdata->operating_mode == FSL_USB2_DR_OTG) {
 		struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+		struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 
+		ehci_fsl->hcd = hcd;
 		hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
+
+		INIT_WORK(&ehci_fsl->change_hcd_work, do_change_hcd);
+
 		dev_dbg(&pdev->dev, "hcd=0x%p  ehci=0x%p, phy=0x%p\n",
 			hcd, ehci, hcd->usb_phy);
 
@@ -167,8 +196,10 @@ static int fsl_ehci_drv_probe(struct platform_device *pdev)
 			retval = -ENODEV;
 			goto err2;
 		}
+
+		ehci_fsl->have_hcd = 1;
 	}
-#endif
+
 	return retval;
 
       err2:
@@ -375,15 +406,6 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
 	return retval;
 }
 
-struct ehci_fsl {
-	struct ehci_hcd	ehci;
-
-#ifdef CONFIG_PM
-	/* Saved USB PHY settings, need to restore after deep sleep. */
-	u32 usb_ctrl;
-#endif
-};
-
 #ifdef CONFIG_PM
 
 #ifdef CONFIG_PPC_MPC512x
@@ -531,24 +553,26 @@ static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
 }
 #endif /* CONFIG_PPC_MPC512x */
 
-static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
-{
-	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
-	return container_of(ehci, struct ehci_fsl, ehci);
-}
-
 static int ehci_fsl_drv_suspend(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
-	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 	void __iomem *non_ehci = hcd->regs;
+	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+	struct usb_bus *host = &hcd->self;
 
 	if (of_device_is_compatible(dev->parent->of_node,
 				    "fsl,mpc5121-usb2-dr")) {
 		return ehci_fsl_mpc512x_drv_suspend(dev);
 	}
 
+	if (host->is_otg) {
+		/* remove hcd */
+		ehci_fsl->hcd_add = 0;
+		schedule_work(&ehci_fsl->change_hcd_work);
+		host->is_otg = 0;
+		return 0;
+	}
+
 	ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
 			device_may_wakeup(dev));
 	if (!fsl_deep_sleep())
@@ -561,15 +585,24 @@ static int ehci_fsl_drv_suspend(struct device *dev)
 static int ehci_fsl_drv_resume(struct device *dev)
 {
 	struct usb_hcd *hcd = dev_get_drvdata(dev);
-	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	void __iomem *non_ehci = hcd->regs;
+	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+	struct usb_bus *host = &hcd->self;
 
 	if (of_device_is_compatible(dev->parent->of_node,
 				    "fsl,mpc5121-usb2-dr")) {
 		return ehci_fsl_mpc512x_drv_resume(dev);
 	}
 
+	if (host->is_otg) {
+		/* add hcd */
+		ehci_fsl->hcd_add = 1;
+		schedule_work(&ehci_fsl->change_hcd_work);
+		host->is_otg = 0;
+		return 0;
+	}
+
 	ehci_prepare_ports_for_controller_resume(ehci);
 	if (!fsl_deep_sleep())
 		return 0;
diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
index 1a8a60a..64538eb 100644
--- a/drivers/usb/host/ehci-fsl.h
+++ b/drivers/usb/host/ehci-fsl.h
@@ -63,4 +63,20 @@
 #define UTMI_PHY_EN             (1<<9)
 #define ULPI_PHY_CLK_SEL        (1<<10)
 #define PHY_CLK_VALID		(1<<17)
+
+struct ehci_fsl {
+	/* Save USB CTRL, need to restore after deep sleep. */
+	u32 usb_ctrl;
+	struct usb_hcd *hcd;
+	struct work_struct change_hcd_work;
+	/*
+	 * store current hcd state for otg;
+	 * have_hcd is true when host drv al already part of otg framework,
+	 * otherwise false;
+	 * hcd_add is true when otg framework wants to add host
+	 * drv as part of otg;flase when it wants to remove it
+	 */
+	unsigned have_hcd:1;
+	unsigned hcd_add:1;
+};
 #endif				/* _EHCI_FSL_H */
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 89533ba..b7eb033 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -359,6 +359,7 @@ struct usb_bus {
 					 * for control transfers?
 					 */
 	u8 otg_port;			/* 0, or number of OTG/HNP port */
+	unsigned is_otg:1;		/* true when host is also otg */
 	unsigned is_b_host:1;		/* true during some HNP roleswitches */
 	unsigned b_hnp_enable:1;	/* OTG: did A-Host enable HNP? */
 	unsigned no_stop_on_short:1;    /*
-- 
1.8.3.1

[PATCH 4/7][v5]usb:fsl:otg: Signal host drv when host is otg

[Ramneek Mehresh]

Set is_otg boolean flag to signal host driver when host
is running in context of otg host suspend/resume.

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
---
 drivers/usb/phy/phy-fsl-usb.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index 4e58aee..815c22c 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -463,6 +463,7 @@ void otg_reset_controller(void)
 int fsl_otg_start_host(struct otg_fsm *fsm, int on)
 {
 	struct usb_otg *otg = fsm->otg;
+	struct usb_bus *host = otg->host;
 	struct device *dev;
 	struct fsl_otg *otg_dev =
 		container_of(otg->usb_phy, struct fsl_otg, phy);
@@ -485,6 +486,7 @@ int fsl_otg_start_host(struct otg_fsm *fsm, int on)
 		else {
 			otg_reset_controller();
 			VDBG("host on......\n");
+			host->is_otg = 1;
 			if (dev->driver->pm && dev->driver->pm->resume) {
 				retval = dev->driver->pm->resume(dev);
 				if (fsm->id) {
@@ -510,8 +512,11 @@ int fsl_otg_start_host(struct otg_fsm *fsm, int on)
 		else {
 			VDBG("host off......\n");
 			if (dev && dev->driver) {
-				if (dev->driver->pm && dev->driver->pm->suspend)
+				if (dev->driver->pm &&
+					dev->driver->pm->suspend) {
+					host->is_otg = 1;
 					retval = dev->driver->pm->suspend(dev);
+				}
 				if (fsm->id)
 					/* default-b */
 					fsl_otg_drv_vbus(fsm, 0);
-- 
1.8.3.1

[PATCH 5/7][v5]usb:fsl:otg: Modify otg_event to start host drv

[Ramneek Mehresh]

Add mechanism to start host driver from inside fsl_otg_even upon
each id change interrupt.

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
---
 drivers/usb/phy/phy-fsl-usb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index 815c22c..3b8a9e5 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -677,6 +677,10 @@ static void fsl_otg_event(struct work_struct *work)
 		fsl_otg_start_host(fsm, 0);
 		otg_drv_vbus(fsm, 0);
 		fsl_otg_start_gadget(fsm, 1);
+	} else {
+		fsl_otg_start_gadget(fsm, 0);
+		otg_drv_vbus(fsm, 1);
+		fsl_otg_start_host(fsm, 1);
 	}
 }
 
-- 
1.8.3.1

[PATCH 6/7][v5]usb:fsl:otg: Combine host/gadget start/resume for ID change

[Ramneek Mehresh]

Make call to fsl_otg_event for each id change even.

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
---
 drivers/usb/phy/phy-fsl-usb.c | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index 3b8a9e5..689516d 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -733,6 +733,7 @@ irqreturn_t fsl_otg_isr(int irq, void *dev_id)
 {
 	struct otg_fsm *fsm = &((struct fsl_otg *)dev_id)->fsm;
 	struct usb_otg *otg = ((struct fsl_otg *)dev_id)->phy.otg;
+	struct fsl_otg *otg_dev = dev_id;
 	u32 otg_int_src, otg_sc;
 
 	otg_sc = fsl_readl(&usb_dr_regs->otgsc);
@@ -762,18 +763,8 @@ irqreturn_t fsl_otg_isr(int irq, void *dev_id)
 				otg->gadget->is_a_peripheral = !fsm->id;
 			VDBG("ID int (ID is %d)\n", fsm->id);
 
-			if (fsm->id) {	/* switch to gadget */
-				schedule_delayed_work(
-					&((struct fsl_otg *)dev_id)->otg_event,
-					100);
-			} else {	/* switch to host */
-				cancel_delayed_work(&
-						    ((struct fsl_otg *)dev_id)->
-						    otg_event);
-				fsl_otg_start_gadget(fsm, 0);
-				otg_drv_vbus(fsm, 1);
-				fsl_otg_start_host(fsm, 1);
-			}
+			schedule_delayed_work(&otg_dev->otg_event, 100);
+
 			return IRQ_HANDLED;
 		}
 	}
-- 
1.8.3.1

[PATCH 7/7][v5]usb:fsl:otg: Add host-gadget drv sync delay

[Ramneek Mehresh]

Resolve synchronization issue between host
and gadget drivers upon role-reversal.

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Reviewed-by: Li Yang-R58472 <LeoLi@freescale.com>
Reviewed-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
Tested-by: Fleming Andrew-AFLEMING <AFLEMING@freescale.com>
---
 drivers/usb/phy/phy-fsl-usb.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
index 689516d..5d678ea 100644
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -544,8 +544,18 @@ int fsl_otg_start_gadget(struct otg_fsm *fsm, int on)
 	dev = otg->gadget->dev.parent;
 
 	if (on) {
-		if (dev->driver->resume)
+		/*
+		 * Delay gadget resume to synchronize between host and gadget
+		 * drivers. Upon role-reversal host drv is shutdown by kernel
+		 * worker thread. By the time host drv shuts down, controller
+		 * gets programmed for gadget role. Shutting host drv after
+		 * this results in controller getting reset, and it stops
+		 * responding to otg events
+		 */
+		if (dev->driver->resume) {
+			msleep(1000);
 			dev->driver->resume(dev);
+		}
 	} else {
 		if (dev->driver->suspend)
 			dev->driver->suspend(dev, otg_suspend_state);
-- 
1.8.3.1

RE: [PATCH 0/7][v5]Add OTG support for FSL socs

[Ramneek Mehresh]

Hi Balbi,

A kind reminder to consider this patch-set for merging. You tried applying this, but due to one small issue, it could not be merged. 
I have fixed that issue in the below patch-set version. Please let me know if you want any changes.

Thanks and Regards,
Ramneek

> -----Original Message-----
> From: Ramneek Mehresh
> Sent: Monday, December 28, 2015 4:42 PM
> To: linux-kernel@vger.kernel.org
> Cc: balbi@ti.com; stern@rowland.harvard.edu; gregkh@linuxfoundation.org;
> linux-usb@vger.kernel.org; Ramneek Mehresh
> <ramneek.mehresh@freescale.com>
> Subject: [PATCH 0/7][v5]Add OTG support for FSL socs
> 
> Add support for otg for all freescale socs having internal usb phy.
> 
> Ramneek Mehresh (7):
>   usb:fsl:otg: Make fsl otg driver as tristate
>   usb:fsl:otg: Add controller version based ULPI and UTMI phy
>   usb:fsl:otg: Add support to add/remove usb host driver
>   usb:fsl:otg: Signal host drv when host is otg
>   usb:fsl:otg: Modify otg_event to start host drv
>   usb:fsl:otg: Combine host/gadget start/resume for ID change
>   usb:fsl:otg: Add host-gadget drv sync delay
> 
>  drivers/usb/host/ehci-fsl.c   | 73 +++++++++++++++++++++++++++++++----
> --------
>  drivers/usb/host/ehci-fsl.h   | 16 ++++++++++
>  drivers/usb/phy/Kconfig       |  2 +-
>  drivers/usb/phy/phy-fsl-usb.c | 58 +++++++++++++++++++++++++---------
>  drivers/usb/phy/phy-fsl-usb.h |  7 +++++
>  include/linux/usb.h           |  1 +
>  6 files changed, 122 insertions(+), 35 deletions(-)
> 
> --
> Changes for v5:
> 	- moved "is_otg" definition from 4/7 to 3/7
> 	  in order to fix compilation issue.
> 1.8.3.1

RE: [PATCH 0/7][v5]Add OTG support for FSL socs

[Ramneek Mehresh]

Hi Balbi,

A kind reminder for the below request. Please let me know if any changes are required on my side.

Thanks and Regards,
Ramneek.

> -----Original Message-----
> From: Ramneek Mehresh
> Sent: Thursday, January 14, 2016 12:32 PM
> To: Ramneek Mehresh <ramneek.mehresh@freescale.com>; linux-
> kernel@vger.kernel.org
> Cc: balbi@ti.com; stern@rowland.harvard.edu; gregkh@linuxfoundation.org;
> linux-usb@vger.kernel.org
> Subject: RE: [PATCH 0/7][v5]Add OTG support for FSL socs
> 
> Hi Balbi,
> 
> A kind reminder to consider this patch-set for merging. You tried applying
> this, but due to one small issue, it could not be merged.
> I have fixed that issue in the below patch-set version. Please let me know if
> you want any changes.
> 
> Thanks and Regards,
> Ramneek
> 
> > -----Original Message-----
> > From: Ramneek Mehresh
> > Sent: Monday, December 28, 2015 4:42 PM
> > To: linux-kernel@vger.kernel.org
> > Cc: balbi@ti.com; stern@rowland.harvard.edu;
> > gregkh@linuxfoundation.org; linux-usb@vger.kernel.org; Ramneek
> Mehresh
> > <ramneek.mehresh@freescale.com>
> > Subject: [PATCH 0/7][v5]Add OTG support for FSL socs
> >
> > Add support for otg for all freescale socs having internal usb phy.
> >
> > Ramneek Mehresh (7):
> >   usb:fsl:otg: Make fsl otg driver as tristate
> >   usb:fsl:otg: Add controller version based ULPI and UTMI phy
> >   usb:fsl:otg: Add support to add/remove usb host driver
> >   usb:fsl:otg: Signal host drv when host is otg
> >   usb:fsl:otg: Modify otg_event to start host drv
> >   usb:fsl:otg: Combine host/gadget start/resume for ID change
> >   usb:fsl:otg: Add host-gadget drv sync delay
> >
> >  drivers/usb/host/ehci-fsl.c   | 73 +++++++++++++++++++++++++++++++-
> ---
> > --------
> >  drivers/usb/host/ehci-fsl.h   | 16 ++++++++++
> >  drivers/usb/phy/Kconfig       |  2 +-
> >  drivers/usb/phy/phy-fsl-usb.c | 58 +++++++++++++++++++++++++--------
> -
> >  drivers/usb/phy/phy-fsl-usb.h |  7 +++++
> >  include/linux/usb.h           |  1 +
> >  6 files changed, 122 insertions(+), 35 deletions(-)
> >
> > --
> > Changes for v5:
> > 	- moved "is_otg" definition from 4/7 to 3/7
> > 	  in order to fix compilation issue.
> > 1.8.3.1

Re: [PATCH 0/7][v5]Add OTG support for FSL socs

[Li Yang]

On Mon, Feb 8, 2016 at 3:18 AM, Ramneek Mehresh <ramneek.mehresh@nxp.com> wrote:
> Hi Balbi,
>
> A kind reminder for the below request. Please let me know if any changes are required on my side.

You are still using the obsolete email address of Balbi trying to get
his attention.

commit a55f6286575863ebfa5577d4d3bb3b6f1dbd45ec
Author: Felipe Balbi <balbi@kernel.org>
Date:   Wed Feb 3 20:23:01 2016 +0200

    MAINTAINERS: fix my email address

    As I'm not working for Texas Instruments anymore,
    balbi@ti.com isn't a valid address. I'll be using
    balbi@kernel.org at least for the time being.

    Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: Felipe Balbi <balbi@kernel.org>

- Leo

Re: [PATCH 0/7][v5]Add OTG support for FSL socs

[Felipe Balbi]

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Hi,

Li Yang <leoli@freescale.com> writes:
> On Mon, Feb 8, 2016 at 3:18 AM, Ramneek Mehresh <ramneek.mehresh@nxp.com> wrote:
>> Hi Balbi,
>>
>> A kind reminder for the below request. Please let me know if any changes are required on my side.
>
> You are still using the obsolete email address of Balbi trying to get
> his attention.
>
> commit a55f6286575863ebfa5577d4d3bb3b6f1dbd45ec
> Author: Felipe Balbi <balbi@kernel.org>
> Date:   Wed Feb 3 20:23:01 2016 +0200
>
>     MAINTAINERS: fix my email address
>
>     As I'm not working for Texas Instruments anymore,
>     balbi@ti.com isn't a valid address. I'll be using
>     balbi@kernel.org at least for the time being.
>
>     Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>     Signed-off-by: Felipe Balbi <balbi@kernel.org>

I'm slowly getting back to working, but I don't have this series in my
inbox. Can you please resend ?

thanks, and sorry for the inconvenience

-- 
balbi


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