2022-05-24 19:54:13

by Piyush Mehta

Subject: [RFC PATCH] usb: chipidea: Add support for VBUS control with PHY

Some platforms make use of VBUS control over PHY which means controller
driver has to access PHY registers to turn on/off VBUS line.This patch
adds support for such platforms in chipidea.

Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control feature.

Signed-off-by: Piyush Mehta <[email protected]>
---
We have created this patch as RFC, as I introduced a new flag
(CI_HDRC_PHY_VBUS_CONTROL) and would like to get comment if
it's the proper way to check for VBus support for zynq.
---
drivers/usb/chipidea/ci_hdrc_usb2.c | 1 +
drivers/usb/chipidea/host.c | 7 +++++++
drivers/usb/chipidea/otg_fsm.c | 7 +++++++
include/linux/usb/chipidea.h | 1 +
4 files changed, 16 insertions(+)

diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
index 89e1d82..dc86b12 100644
--- a/drivers/usb/chipidea/ci_hdrc_usb2.c
+++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
@@ -30,6 +30,7 @@ static const struct ci_hdrc_platform_data ci_default_pdata = {

static const struct ci_hdrc_platform_data ci_zynq_pdata = {
.capoffset = DEF_CAPOFFSET,
+ .flags = CI_HDRC_PHY_VBUS_CONTROL,
};

static const struct ci_hdrc_platform_data ci_zevio_pdata = {
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index bdc3885..bc3634a 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -63,6 +63,13 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int portnum, bool enable)
priv->enabled = enable;
}

+ if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL) {
+ if (enable)
+ usb_phy_vbus_on(ci->usb_phy);
+ else
+ usb_phy_vbus_off(ci->usb_phy);
+ }
+
if (enable && (ci->platdata->phy_mode == USBPHY_INTERFACE_MODE_HSIC)) {
/*
* Marvell 28nm HSIC PHY requires forcing the port to HS mode.
diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
index 6ed4b00..5ed9164 100644
--- a/drivers/usb/chipidea/otg_fsm.c
+++ b/drivers/usb/chipidea/otg_fsm.c
@@ -471,6 +471,10 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int on)
return;
}
}
+
+ if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
+ usb_phy_vbus_on(ci->usb_phy);
+
/* Disable data pulse irq */
hw_write_otgsc(ci, OTGSC_DPIE, 0);

@@ -480,6 +484,9 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int on)
if (ci->platdata->reg_vbus)
regulator_disable(ci->platdata->reg_vbus);

+ if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
+ usb_phy_vbus_off(ci->usb_phy);
+
fsm->a_bus_drop = 1;
fsm->a_bus_req = 0;
}
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index edf3342..ee38835 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -62,6 +62,7 @@ struct ci_hdrc_platform_data {
#define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
#define CI_HDRC_IMX_IS_HSIC BIT(14)
#define CI_HDRC_PMQOS BIT(15)
+#define CI_HDRC_PHY_VBUS_CONTROL BIT(16)
enum usb_dr_mode dr_mode;
#define CI_HDRC_CONTROLLER_RESET_EVENT 0
#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
--
2.7.4

2022-06-21 12:33:36

by Mehta, Piyush

Subject: RE: [RFC PATCH] usb: chipidea: Add support for VBUS control with PHY

Ping

Regards,
Piyush Mehta

> -----Original Message-----
> From: Piyush Mehta <[email protected]>
> Sent: Tuesday, May 24, 2022 5:38 PM
> To: [email protected]; [email protected]; Michal Simek
> <[email protected]>
> Cc: [email protected]; [email protected]; git
> <[email protected]>; Siva Durga Prasad Paladugu <[email protected]>; Radhey
> Shyam Pandey <[email protected]>; Piyush Mehta <[email protected]>
> Subject: [RFC PATCH] usb: chipidea: Add support for VBUS control with PHY
>
> Some platforms make use of VBUS control over PHY which means controller
> driver has to access PHY registers to turn on/off VBUS line.This patch adds
> support for such platforms in chipidea.
>
> Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control feature.
>
> Signed-off-by: Piyush Mehta <[email protected]>
> ---
> We have created this patch as RFC, as I introduced a new flag
> (CI_HDRC_PHY_VBUS_CONTROL) and would like to get comment if it's the
> proper way to check for VBus support for zynq.
> ---
> drivers/usb/chipidea/ci_hdrc_usb2.c | 1 +
> drivers/usb/chipidea/host.c | 7 +++++++
> drivers/usb/chipidea/otg_fsm.c | 7 +++++++
> include/linux/usb/chipidea.h | 1 +
> 4 files changed, 16 insertions(+)
>
> diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c
> b/drivers/usb/chipidea/ci_hdrc_usb2.c
> index 89e1d82..dc86b12 100644
> --- a/drivers/usb/chipidea/ci_hdrc_usb2.c
> +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
> @@ -30,6 +30,7 @@ static const struct ci_hdrc_platform_data
> ci_default_pdata = {
>
> static const struct ci_hdrc_platform_data ci_zynq_pdata = {
> .capoffset = DEF_CAPOFFSET,
> + .flags = CI_HDRC_PHY_VBUS_CONTROL,
> };
>
> static const struct ci_hdrc_platform_data ci_zevio_pdata = { diff --git
> a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index
> bdc3885..bc3634a 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -63,6 +63,13 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int
> portnum, bool enable)
> priv->enabled = enable;
> }
>
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL) {
> + if (enable)
> + usb_phy_vbus_on(ci->usb_phy);
> + else
> + usb_phy_vbus_off(ci->usb_phy);
> + }
> +
> if (enable && (ci->platdata->phy_mode ==
> USBPHY_INTERFACE_MODE_HSIC)) {
> /*
> * Marvell 28nm HSIC PHY requires forcing the port to HS
> mode.
> diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
> index 6ed4b00..5ed9164 100644
> --- a/drivers/usb/chipidea/otg_fsm.c
> +++ b/drivers/usb/chipidea/otg_fsm.c
> @@ -471,6 +471,10 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int
> on)
> return;
> }
> }
> +
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> + usb_phy_vbus_on(ci->usb_phy);
> +
> /* Disable data pulse irq */
> hw_write_otgsc(ci, OTGSC_DPIE, 0);
>
> @@ -480,6 +484,9 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int
> on)
> if (ci->platdata->reg_vbus)
> regulator_disable(ci->platdata->reg_vbus);
>
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> + usb_phy_vbus_off(ci->usb_phy);
> +
> fsm->a_bus_drop = 1;
> fsm->a_bus_req = 0;
> }
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index edf3342..ee38835 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -62,6 +62,7 @@ struct ci_hdrc_platform_data {
> #define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
> #define CI_HDRC_IMX_IS_HSIC BIT(14)
> #define CI_HDRC_PMQOS BIT(15)
> +#define CI_HDRC_PHY_VBUS_CONTROL BIT(16)
> enum usb_dr_mode dr_mode;
> #define CI_HDRC_CONTROLLER_RESET_EVENT 0
> #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
> --
> 2.7.4

2022-07-03 01:04:45

by Peter Chen

Subject: Re: [RFC PATCH] usb: chipidea: Add support for VBUS control with PHY

On 22-05-24 17:38:02, Piyush Mehta wrote:
> Some platforms make use of VBUS control over PHY which means controller
> driver has to access PHY registers to turn on/off VBUS line.This patch
> adds support for such platforms in chipidea.
>
> Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control feature.
>
> Signed-off-by: Piyush Mehta <[email protected]>
> ---
> We have created this patch as RFC, as I introduced a new flag
> (CI_HDRC_PHY_VBUS_CONTROL) and would like to get comment if
> it's the proper way to check for VBus support for zynq.
> ---
> drivers/usb/chipidea/ci_hdrc_usb2.c | 1 +
> drivers/usb/chipidea/host.c | 7 +++++++
> drivers/usb/chipidea/otg_fsm.c | 7 +++++++
> include/linux/usb/chipidea.h | 1 +
> 4 files changed, 16 insertions(+)
>
> diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
> index 89e1d82..dc86b12 100644
> --- a/drivers/usb/chipidea/ci_hdrc_usb2.c
> +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
> @@ -30,6 +30,7 @@ static const struct ci_hdrc_platform_data ci_default_pdata = {
>
> static const struct ci_hdrc_platform_data ci_zynq_pdata = {
> .capoffset = DEF_CAPOFFSET,
> + .flags = CI_HDRC_PHY_VBUS_CONTROL,
> };
>
> static const struct ci_hdrc_platform_data ci_zevio_pdata = {
> diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> index bdc3885..bc3634a 100644
> --- a/drivers/usb/chipidea/host.c
> +++ b/drivers/usb/chipidea/host.c
> @@ -63,6 +63,13 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int portnum, bool enable)
> priv->enabled = enable;
> }
>
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL) {
> + if (enable)
> + usb_phy_vbus_on(ci->usb_phy);
> + else
> + usb_phy_vbus_off(ci->usb_phy);
> + }
> +
> if (enable && (ci->platdata->phy_mode == USBPHY_INTERFACE_MODE_HSIC)) {
> /*
> * Marvell 28nm HSIC PHY requires forcing the port to HS mode.
> diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c
> index 6ed4b00..5ed9164 100644
> --- a/drivers/usb/chipidea/otg_fsm.c
> +++ b/drivers/usb/chipidea/otg_fsm.c
> @@ -471,6 +471,10 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int on)
> return;
> }
> }
> +
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> + usb_phy_vbus_on(ci->usb_phy);
> +
> /* Disable data pulse irq */
> hw_write_otgsc(ci, OTGSC_DPIE, 0);
>
> @@ -480,6 +484,9 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int on)
> if (ci->platdata->reg_vbus)
> regulator_disable(ci->platdata->reg_vbus);
>
> + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> + usb_phy_vbus_off(ci->usb_phy);
> +

Have your platform used OTG FSM? If not used, do not need to change it.
Otherwise, it is okay for me.

Peter

> fsm->a_bus_drop = 1;
> fsm->a_bus_req = 0;
> }
> diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
> index edf3342..ee38835 100644
> --- a/include/linux/usb/chipidea.h
> +++ b/include/linux/usb/chipidea.h
> @@ -62,6 +62,7 @@ struct ci_hdrc_platform_data {
> #define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
> #define CI_HDRC_IMX_IS_HSIC BIT(14)
> #define CI_HDRC_PMQOS BIT(15)
> +#define CI_HDRC_PHY_VBUS_CONTROL BIT(16)
> enum usb_dr_mode dr_mode;
> #define CI_HDRC_CONTROLLER_RESET_EVENT 0
> #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
> --
> 2.7.4
>

--

Thanks,
Peter Chen

2022-07-11 16:59:59

by Mehta, Piyush

Subject: RE: [RFC PATCH] usb: chipidea: Add support for VBUS control with PHY

Hello Peter,

Thanks for the review.
Yes, we are supporting OTG feature and have used OTG FSM platform.

Regards,
Piyush Mehta

> -----Original Message-----
> From: Peter Chen <[email protected]>
> Sent: Sunday, July 3, 2022 6:05 AM
> To: Piyush Mehta <[email protected]>
> Cc: [email protected]; [email protected]; linux-
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]
> Subject: Re: [RFC PATCH] usb: chipidea: Add support for VBUS control with
> PHY
>
> CAUTION: This message has originated from an External Source. Please use
> proper judgment and caution when opening attachments, clicking links, or
> responding to this email.
>
>
> On 22-05-24 17:38:02, Piyush Mehta wrote:
> > Some platforms make use of VBUS control over PHY which means
> > controller driver has to access PHY registers to turn on/off VBUS
> > line.This patch adds support for such platforms in chipidea.
> >
> > Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control
> feature.
> >
> > Signed-off-by: Piyush Mehta <[email protected]>
> > ---
> > We have created this patch as RFC, as I introduced a new flag
> > (CI_HDRC_PHY_VBUS_CONTROL) and would like to get comment if it's the
> > proper way to check for VBus support for zynq.
> > ---
> > drivers/usb/chipidea/ci_hdrc_usb2.c | 1 +
> > drivers/usb/chipidea/host.c | 7 +++++++
> > drivers/usb/chipidea/otg_fsm.c | 7 +++++++
> > include/linux/usb/chipidea.h | 1 +
> > 4 files changed, 16 insertions(+)
> >
> > diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c
> > b/drivers/usb/chipidea/ci_hdrc_usb2.c
> > index 89e1d82..dc86b12 100644
> > --- a/drivers/usb/chipidea/ci_hdrc_usb2.c
> > +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
> > @@ -30,6 +30,7 @@ static const struct ci_hdrc_platform_data
> > ci_default_pdata = {
> >
> > static const struct ci_hdrc_platform_data ci_zynq_pdata = {
> > .capoffset = DEF_CAPOFFSET,
> > + .flags = CI_HDRC_PHY_VBUS_CONTROL,
> > };
> >
> > static const struct ci_hdrc_platform_data ci_zevio_pdata = { diff
> > --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> > index bdc3885..bc3634a 100644
> > --- a/drivers/usb/chipidea/host.c
> > +++ b/drivers/usb/chipidea/host.c
> > @@ -63,6 +63,13 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int
> portnum, bool enable)
> > priv->enabled = enable;
> > }
> >
> > + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL) {
> > + if (enable)
> > + usb_phy_vbus_on(ci->usb_phy);
> > + else
> > + usb_phy_vbus_off(ci->usb_phy);
> > + }
> > +
> > if (enable && (ci->platdata->phy_mode ==
> USBPHY_INTERFACE_MODE_HSIC)) {
> > /*
> > * Marvell 28nm HSIC PHY requires forcing the port to HS mode.
> > diff --git a/drivers/usb/chipidea/otg_fsm.c
> > b/drivers/usb/chipidea/otg_fsm.c index 6ed4b00..5ed9164 100644
> > --- a/drivers/usb/chipidea/otg_fsm.c
> > +++ b/drivers/usb/chipidea/otg_fsm.c
> > @@ -471,6 +471,10 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm,
> int on)
> > return;
> > }
> > }
> > +
> > + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> > + usb_phy_vbus_on(ci->usb_phy);
> > +
> > /* Disable data pulse irq */
> > hw_write_otgsc(ci, OTGSC_DPIE, 0);
> >
> > @@ -480,6 +484,9 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int
> on)
> > if (ci->platdata->reg_vbus)
> > regulator_disable(ci->platdata->reg_vbus);
> >
> > + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> > + usb_phy_vbus_off(ci->usb_phy);
> > +
>
> Have your platform used OTG FSM? If not used, do not need to change it.
> Otherwise, it is okay for me.
>
> Peter
>
> > fsm->a_bus_drop = 1;
> > fsm->a_bus_req = 0;
> > }
> > diff --git a/include/linux/usb/chipidea.h
> > b/include/linux/usb/chipidea.h index edf3342..ee38835 100644
> > --- a/include/linux/usb/chipidea.h
> > +++ b/include/linux/usb/chipidea.h
> > @@ -62,6 +62,7 @@ struct ci_hdrc_platform_data { #define
> > CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
> > #define CI_HDRC_IMX_IS_HSIC BIT(14)
> > #define CI_HDRC_PMQOS BIT(15)
> > +#define CI_HDRC_PHY_VBUS_CONTROL BIT(16)
> > enum usb_dr_mode dr_mode;
> > #define CI_HDRC_CONTROLLER_RESET_EVENT 0
> > #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
> > --
> > 2.7.4
> >
>
> --
>
> Thanks,
> Peter Chen

2022-07-12 01:22:46

by Peter Chen

Subject: Re: [RFC PATCH] usb: chipidea: Add support for VBUS control with PHY

On 22-07-11 16:45:20, Mehta, Piyush wrote:
> Hello Peter,
>
> Thanks for the review.
> Yes, we are supporting OTG feature and have used OTG FSM platform.

Please generate the formal patch with my ack, thanks.

Acked-by: Peter Chen <[email protected]>

>
> Regards,
> Piyush Mehta
>
> > -----Original Message-----
> > From: Peter Chen <[email protected]>
> > Sent: Sunday, July 3, 2022 6:05 AM
> > To: Piyush Mehta <[email protected]>
> > Cc: [email protected]; [email protected]; linux-
> > [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected]
> > Subject: Re: [RFC PATCH] usb: chipidea: Add support for VBUS control with
> > PHY
> >
> > CAUTION: This message has originated from an External Source. Please use
> > proper judgment and caution when opening attachments, clicking links, or
> > responding to this email.
> >
> >
> > On 22-05-24 17:38:02, Piyush Mehta wrote:
> > > Some platforms make use of VBUS control over PHY which means
> > > controller driver has to access PHY registers to turn on/off VBUS
> > > line.This patch adds support for such platforms in chipidea.
> > >
> > > Flag 'CI_HDRC_PHY_VBUS_CONTROL' added to support VBus control
> > feature.
> > >
> > > Signed-off-by: Piyush Mehta <[email protected]>
> > > ---
> > > We have created this patch as RFC, as I introduced a new flag
> > > (CI_HDRC_PHY_VBUS_CONTROL) and would like to get comment if it's the
> > > proper way to check for VBus support for zynq.
> > > ---
> > > drivers/usb/chipidea/ci_hdrc_usb2.c | 1 +
> > > drivers/usb/chipidea/host.c | 7 +++++++
> > > drivers/usb/chipidea/otg_fsm.c | 7 +++++++
> > > include/linux/usb/chipidea.h | 1 +
> > > 4 files changed, 16 insertions(+)
> > >
> > > diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c
> > > b/drivers/usb/chipidea/ci_hdrc_usb2.c
> > > index 89e1d82..dc86b12 100644
> > > --- a/drivers/usb/chipidea/ci_hdrc_usb2.c
> > > +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
> > > @@ -30,6 +30,7 @@ static const struct ci_hdrc_platform_data
> > > ci_default_pdata = {
> > >
> > > static const struct ci_hdrc_platform_data ci_zynq_pdata = {
> > > .capoffset = DEF_CAPOFFSET,
> > > + .flags = CI_HDRC_PHY_VBUS_CONTROL,
> > > };
> > >
> > > static const struct ci_hdrc_platform_data ci_zevio_pdata = { diff
> > > --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
> > > index bdc3885..bc3634a 100644
> > > --- a/drivers/usb/chipidea/host.c
> > > +++ b/drivers/usb/chipidea/host.c
> > > @@ -63,6 +63,13 @@ static int ehci_ci_portpower(struct usb_hcd *hcd, int
> > portnum, bool enable)
> > > priv->enabled = enable;
> > > }
> > >
> > > + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL) {
> > > + if (enable)
> > > + usb_phy_vbus_on(ci->usb_phy);
> > > + else
> > > + usb_phy_vbus_off(ci->usb_phy);
> > > + }
> > > +
> > > if (enable && (ci->platdata->phy_mode ==
> > USBPHY_INTERFACE_MODE_HSIC)) {
> > > /*
> > > * Marvell 28nm HSIC PHY requires forcing the port to HS mode.
> > > diff --git a/drivers/usb/chipidea/otg_fsm.c
> > > b/drivers/usb/chipidea/otg_fsm.c index 6ed4b00..5ed9164 100644
> > > --- a/drivers/usb/chipidea/otg_fsm.c
> > > +++ b/drivers/usb/chipidea/otg_fsm.c
> > > @@ -471,6 +471,10 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm,
> > int on)
> > > return;
> > > }
> > > }
> > > +
> > > + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> > > + usb_phy_vbus_on(ci->usb_phy);
> > > +
> > > /* Disable data pulse irq */
> > > hw_write_otgsc(ci, OTGSC_DPIE, 0);
> > >
> > > @@ -480,6 +484,9 @@ static void ci_otg_drv_vbus(struct otg_fsm *fsm, int
> > on)
> > > if (ci->platdata->reg_vbus)
> > > regulator_disable(ci->platdata->reg_vbus);
> > >
> > > + if (ci->platdata->flags & CI_HDRC_PHY_VBUS_CONTROL)
> > > + usb_phy_vbus_off(ci->usb_phy);
> > > +
> >
> > Have your platform used OTG FSM? If not used, do not need to change it.
> > Otherwise, it is okay for me.
> >
> > Peter
> >
> > > fsm->a_bus_drop = 1;
> > > fsm->a_bus_req = 0;
> > > }
> > > diff --git a/include/linux/usb/chipidea.h
> > > b/include/linux/usb/chipidea.h index edf3342..ee38835 100644
> > > --- a/include/linux/usb/chipidea.h
> > > +++ b/include/linux/usb/chipidea.h
> > > @@ -62,6 +62,7 @@ struct ci_hdrc_platform_data { #define
> > > CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
> > > #define CI_HDRC_IMX_IS_HSIC BIT(14)
> > > #define CI_HDRC_PMQOS BIT(15)
> > > +#define CI_HDRC_PHY_VBUS_CONTROL BIT(16)
> > > enum usb_dr_mode dr_mode;
> > > #define CI_HDRC_CONTROLLER_RESET_EVENT 0
> > > #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
> > > --
> > > 2.7.4
> > >
> >
> > --
> >
> > Thanks,
> > Peter Chen
>

--

Thanks,
Peter Chen