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| author | Marek Vasut <marex@denx.de> | 2016-04-27 14:58:49 +0200 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2016-05-03 19:21:18 +0200 |
| commit | b4fbd089e4b7ead53d4a27148f6df9c18572b1ce (patch) | |
| tree | 47ae9bcad58d877eda2a6f0b08b6681e93e59f6e | |
| parent | 618da5630b5629d1c506be17f642502b483dab1a (diff) | |
| download | u-boot-imx-b4fbd089e4b7ead53d4a27148f6df9c18572b1ce.zip u-boot-imx-b4fbd089e4b7ead53d4a27148f6df9c18572b1ce.tar.gz u-boot-imx-b4fbd089e4b7ead53d4a27148f6df9c18572b1ce.tar.bz2 | |
usb: dwc2: Make OC protection configurable
Introduce a new flag in the controller private data, which allows selectively
disabling the OC protection. Use the standard 'disable-over-current' OF prop
to set this flag. This OC protection must be disabled on EBV SoCrates rev 1.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefan Roese <sr@denx.de>
Cc: Dinh Nguyen <dinguyen@kernel.org>
| -rw-r--r-- | drivers/usb/host/dwc2.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c index 5673220..0c4adaf 100644 --- a/drivers/usb/host/dwc2.c +++ b/drivers/usb/host/dwc2.c @@ -18,6 +18,8 @@ #include "dwc2.h" +DECLARE_GLOBAL_DATA_PTR; + /* Use only HC channel 0. */ #define DWC2_HC_CHANNEL 0 @@ -40,6 +42,7 @@ struct dwc2_priv { struct dwc2_core_regs *regs; int root_hub_devnum; bool ext_vbus; + bool oc_disable; }; #ifndef CONFIG_DM_USB @@ -265,9 +268,11 @@ static void dwc_otg_core_init(struct dwc2_priv *priv) /* Program the ULPI External VBUS bit if needed */ if (priv->ext_vbus) { - usbcfg |= (DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV | - DWC2_GUSBCFG_ULPI_INT_VBUS_INDICATOR | - DWC2_GUSBCFG_INDICATOR_PASSTHROUGH); + usbcfg |= DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV; + if (!priv->oc_disable) { + usbcfg |= DWC2_GUSBCFG_ULPI_INT_VBUS_INDICATOR | + DWC2_GUSBCFG_INDICATOR_PASSTHROUGH; + } } else { usbcfg &= ~DWC2_GUSBCFG_ULPI_EXT_VBUS_DRV; } @@ -1177,6 +1182,7 @@ static int dwc2_submit_int_msg(struct udevice *dev, struct usb_device *udev, static int dwc2_usb_ofdata_to_platdata(struct udevice *dev) { struct dwc2_priv *priv = dev_get_priv(dev); + const void *prop; fdt_addr_t addr; addr = dev_get_addr(dev); @@ -1184,6 +1190,11 @@ static int dwc2_usb_ofdata_to_platdata(struct udevice *dev) return -EINVAL; priv->regs = (struct dwc2_core_regs *)addr; + prop = fdt_getprop(gd->fdt_blob, dev->of_offset, "disable-over-current", + NULL); + if (prop) + priv->oc_disable = true; + return 0; } |