[U-Boot] [[PATCH v2 5/6] USB: ehci: Add a weak function for resetting devices

[Dan Murphy]

Add a __weak function that can be overridden to reset devices
attached to an ehci devices after the FEAT_POWER has been submitted

Signed-off-by: Dan Murphy <dmurphy at ti.com>
---
 drivers/usb/host/ehci-hcd.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 706cf0c..fdd3994 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -616,6 +616,11 @@ __weak uint32_t *ehci_get_portsc_register(struct ehci_hcor *hcor, int port)
 	return (uint32_t *)&hcor->or_portsc[port];
 }
 
+__weak void ehci_reset_attached_devices(int port)
+{
+	return;
+}
+
 int
 ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 		 int length, struct devrequest *req)
@@ -777,6 +782,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 				reg |= EHCI_PS_PP;
 				ehci_writel(status_reg, reg);
 			}
+			ehci_reset_attached_devices(port);
 			break;
 		case USB_PORT_FEAT_RESET:
 			if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
@@ -794,6 +800,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
 				reg |= EHCI_PS_PR;
 				reg &= ~EHCI_PS_PE;
 				ehci_writel(status_reg, reg);
+
 				/*
 				 * caller must wait, then call GetPortStatus
 				 * usb 2.0 specification say 50 ms resets on
-- 
1.7.9.5