Add support for a vbus-supply regulator specified in devicetree. This provides generic support to avoid hardcoded GPIO configuration in board init code.
Reviewed-by: Neil Armstrong neil.armstrong@linaro.org Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- This patch has no dependencies
Cc: Marek Vasut marex@denx.de --- drivers/usb/dwc3/dwc3-generic.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-generic.c b/drivers/usb/dwc3/dwc3-generic.c index 6fb2de8a5ace..48da621ba966 100644 --- a/drivers/usb/dwc3/dwc3-generic.c +++ b/drivers/usb/dwc3/dwc3-generic.c @@ -21,6 +21,7 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <malloc.h> +#include <power/regulator.h> #include <usb.h> #include "core.h" #include "gadget.h" @@ -47,6 +48,7 @@ struct dwc3_generic_priv { struct dwc3_generic_host_priv { struct xhci_ctrl xhci_ctrl; struct dwc3_generic_priv gen_priv; + struct udevice *vbus_dev; };
static int dwc3_generic_probe(struct udevice *dev, @@ -240,6 +242,13 @@ static int dwc3_generic_host_probe(struct udevice *dev) if (rc) return rc;
+ rc = device_get_supply_regulator(dev, "vbus-supply", &priv->vbus_dev); + if (rc) + debug("%s: No vbus regulator found: %d\n", dev->name, rc); + + if (priv->vbus_dev) + regulator_set_enable(priv->vbus_dev, true); + hccr = (struct xhci_hccr *)priv->gen_priv.base; hcor = (struct xhci_hcor *)(priv->gen_priv.base + HC_LENGTH(xhci_readl(&(hccr)->cr_capbase))); @@ -256,6 +265,9 @@ static int dwc3_generic_host_remove(struct udevice *dev) if (rc) return rc;
+ if (priv->vbus_dev) + regulator_set_enable(priv->vbus_dev, false); + return dwc3_generic_remove(dev, &priv->gen_priv); }