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[Feature request]For some ehci controller, qemu should implement using portsc[26-27] to detect the speed of device.
for some ehci controller ,for example ehci controller on fsl_imx6,it using portsc[26-27] to decide a full speed device or high speed device was connected, hub-ehci.c should set the portsc[26-27] to return the right speed.
line:1001 in hub-ehci.c
if (dev && dev->attached && (dev->speedmask & USB_SPEED_MASK_HIGH)) {
val |= PORTSC_PED;
}
below is the spec for fsl_imx6 USB PART.
PORTSC:27–26 :PSPD
Port Speed - Read Only.
This register field indicates the speed at which the port is operating.
00 Full Speed
01 Low Speed
10 High Speed
11 Undefined
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