[Bug 1906608] [NEW] [Feature request]For some ehci controller, qemu should implement using portsc[26-27] to detect the speed of device.

[ruimeiyan]

Public bug reported:

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

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1906608

Title:
   [Feature request]For some ehci controller, qemu should implement
  using portsc[26-27]  to detect the speed of device.

Status in QEMU:
  New

Bug description:
  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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