diff options
| -rw-r--r-- | drivers/usb/dwc2/core.h | 4 | ||||
| -rw-r--r-- | drivers/usb/dwc2/core_intr.c | 3 | ||||
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 6 | ||||
| -rw-r--r-- | drivers/usb/dwc2/params.c | 1 |
4 files changed, 11 insertions, 3 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index ab6b815e0089..483de2bbfaab 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -383,6 +383,9 @@ enum dwc2_ep0_state { * 0 - No (default) * 1 - Partial power down * 2 - Hibernation + * @no_clock_gating: Specifies whether to avoid clock gating feature. + * 0 - No (use clock gating) + * 1 - Yes (avoid it) * @lpm: Enable LPM support. * 0 - No * 1 - Yes @@ -480,6 +483,7 @@ struct dwc2_core_params { #define DWC2_POWER_DOWN_PARAM_NONE 0 #define DWC2_POWER_DOWN_PARAM_PARTIAL 1 #define DWC2_POWER_DOWN_PARAM_HIBERNATION 2 + bool no_clock_gating; bool lpm; bool lpm_clock_gating; diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c index a5ab03808da6..a5c52b237e72 100644 --- a/drivers/usb/dwc2/core_intr.c +++ b/drivers/usb/dwc2/core_intr.c @@ -556,7 +556,8 @@ static void dwc2_handle_usb_suspend_intr(struct dwc2_hsotg *hsotg) * If neither hibernation nor partial power down are supported, * clock gating is used to save power. */ - dwc2_gadget_enter_clock_gating(hsotg); + if (!hsotg->params.no_clock_gating) + dwc2_gadget_enter_clock_gating(hsotg); } /* diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 035d4911a3c3..2a7828971d05 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -3338,7 +3338,8 @@ int dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) * If not hibernation nor partial power down are supported, * clock gating is used to save power. */ - dwc2_host_enter_clock_gating(hsotg); + if (!hsotg->params.no_clock_gating) + dwc2_host_enter_clock_gating(hsotg); break; } @@ -4402,7 +4403,8 @@ static int _dwc2_hcd_suspend(struct usb_hcd *hcd) * If not hibernation nor partial power down are supported, * clock gating is used to save power. */ - dwc2_host_enter_clock_gating(hsotg); + if (!hsotg->params.no_clock_gating) + dwc2_host_enter_clock_gating(hsotg); /* After entering suspend, hardware is not accessible */ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 67c5eb140232..59e119345994 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -76,6 +76,7 @@ static void dwc2_set_s3c6400_params(struct dwc2_hsotg *hsotg) struct dwc2_core_params *p = &hsotg->params; p->power_down = DWC2_POWER_DOWN_PARAM_NONE; + p->no_clock_gating = true; p->phy_utmi_width = 8; } |