diff options
| author | Dinh Nguyen <dinguyen@kernel.org> | 2017-11-01 18:34:53 +0300 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-12-12 14:04:22 +0300 |
| commit | f2830ad455ec0fdc386baeb9d654f7095bf849da (patch) | |
| tree | 36e4ec9685c427897027408661f9f5d338c2c939 /drivers/usb/dwc2 | |
| parent | 5785e87a3db80a033c16e19de7741bc444f50f1a (diff) | |
| download | linux-f2830ad455ec0fdc386baeb9d654f7095bf849da.tar.xz | |
usb: dwc2: add optional usb ecc reset bit
The dwc2 USB controller in Stratix10 has an additional ECC reset bit that
needs to get de-asserted in order for the controller to work properly.
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/core.h | 1 | ||||
| -rw-r--r-- | drivers/usb/dwc2/platform.c | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index f66c94130cac..f22f2e9d0759 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -925,6 +925,7 @@ struct dwc2_hsotg { int irq; struct clk *clk; struct reset_control *reset; + struct reset_control *reset_ecc; unsigned int queuing_high_bandwidth:1; unsigned int srp_success:1; diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 3e26550d13dd..4703478f702f 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -221,6 +221,15 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg) reset_control_deassert(hsotg->reset); + hsotg->reset_ecc = devm_reset_control_get_optional(hsotg->dev, "dwc2-ecc"); + if (IS_ERR(hsotg->reset_ecc)) { + ret = PTR_ERR(hsotg->reset_ecc); + dev_err(hsotg->dev, "error getting reset control for ecc %d\n", ret); + return ret; + } + + reset_control_deassert(hsotg->reset_ecc); + /* Set default UTMI width */ hsotg->phyif = GUSBCFG_PHYIF16; @@ -319,6 +328,7 @@ static int dwc2_driver_remove(struct platform_device *dev) dwc2_lowlevel_hw_disable(hsotg); reset_control_assert(hsotg->reset); + reset_control_assert(hsotg->reset_ecc); return 0; } |