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authorKuo-Jung Su <dantesu@faraday-tech.com>2013-05-15 15:29:23 +0800
committerMarek Vasut <marex@denx.de>2013-06-12 22:22:51 +0200
commite82a316d7f9425943d86c1ed61c5cf57b0d5b188 (patch)
treef32a19b18dde2c92c54c86018f88689057e9f6fb /common/usb_hub.c
parentaa1550588cc60549bf3a97dc6dccb7de4c022aa6 (diff)
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usb: ehci: add Faraday USB 2.0 EHCI support
This patch adds support to both Faraday FUSBH200 and FOTG210, the differences between Faraday EHCI and standard EHCI are listed bellow: 1. The PORTSC starts at 0x30 instead of 0x44. 2. The CONFIGFLAG(0x40) is not only un-implemented, and also has its address space removed. 3. Faraday EHCI is a TDI design, but it doesn't compatible with the general TDI implementation found at both U-Boot and Linux. 4. The ISOC descriptors differ from standard EHCI in several ways. But since U-boot doesn't support ISOC, we don't have to worry about that. Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com> CC: Marek Vasut <marex@denx.de>
Diffstat (limited to 'common/usb_hub.c')
-rw-r--r--common/usb_hub.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/common/usb_hub.c b/common/usb_hub.c
index fc3a8c1..774ba63 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -489,7 +489,11 @@ static int usb_hub_configure(struct usb_device *dev)
i + 1, portstatus);
usb_clear_port_feature(dev, i + 1,
USB_PORT_FEAT_C_ENABLE);
-
+ /*
+ * The following hack causes a ghost device problem
+ * to Faraday EHCI
+ */
+#ifndef CONFIG_USB_EHCI_FARADAY
/* EM interference sometimes causes bad shielded USB
* devices to be shutdown by the hub, this hack enables
* them again. Works at least with mouse driver */
@@ -501,6 +505,7 @@ static int usb_hub_configure(struct usb_device *dev)
"re-enabling...\n", i + 1);
usb_hub_port_connect_change(dev, i);
}
+#endif
}
if (portstatus & USB_PORT_STAT_SUSPEND) {
debug("port %d suspend change\n", i + 1);