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SPRZ450B February 2018 – September 2024 DRA74P , DRA75P , DRA76P , DRA77P

1
1Introduction
1. Related Documentation
2. Trademarks
3. Modules Impacted
2Silicon Advisories
1. Revisions SR 1.0 - Advisories List
2. i202
3. i378
4. i631
5. i694
6. i698
7. i699
8. i709
9. i727
10. i729
11. i734
12. i767
13. i782
14. i783
15. i802
16. i803
17. i807
18. i808
19. i809
20. i810
21. i813
22. i814
23. i815
24. i818
25. i819
26. i820
27. i824
28. i826
29. i829
30. i834
31. i849
32. i856
33. i862
34. i863
35. i869
36. i870
37. i871
38. i872
39. i874
40. i878
41. i879
42. i883
43. i889
44. i890
45. i893
46. i896
47. i897
48. i898
49. i899
50. i900
51. i903
52. i904
53. i916
54. i929
55. i930
56. i932
57. i933
58. i936
59. i940
60. i2446
3Silicon Limitations
1. Revisions SR 1.0 - Limitations List
2. i596
3. i641
4. i833
5. i838
6. i844
7. i845
8. i848
9. i876
10. i877
11. i892
12. i909
4Silicon Cautions
1. Revisions SR 1.0 - Cautions List
2. i781
3. i827
4. i832
5. i836
6. i839
7. i864
8. i885
9. i886
10. i912
11. i926
12. i931
13. i935
14. i937
5Revision History

i824

USB3.0 Link Cannot Be Established When Suspend Mode Is Enabled

CRITICALITY

Medium

DESCRIPTION

When suspend mode is enabled (USB_GUSB3PIPECTL[17]SUSPENDENABLE =0x1), the communication between the host controller and the USB device is broken. This happens in the following two sequences:

Sequence 1:

Enable and configure the DWC_USB3 controller as host
Set the USB_GUSB3PIPECTL[17]SUSPENDENABLE = 0x1 and USB_GUSB2PHYCFG[6]SUSPHY = 0x1
Connect a USB3.0 device

When USB3.0 device is connected there is not enough time to establish the USB3.0 link so the host controller falls back to USB2.0 mode.

Sequence 2:

Enable and configure the DWC_USB3 controller as host
Wait until the USB3.0 link is established
Set the USB_GUSB3PIPECTL [17]SUSPENDENABLE = 0x1 and USB_GUSB2PHYCFG [6]SUSPHY = 0x1
Host controller initiates a transition to U3.
Wait until transition U3 is completed successfully
Host controller initiates a transition to U0.

The USB3.0 link cannot be reestablished and the host controller falls back to USB2.0.

WORKAROUND

First set CTRL_CORE_PHY_POWER_USB[21:14]USB_PWRCTL_CLK_CMD to 0x43 then to 0x03 just after U3_EXIT state (setting the PORTSC2 in U0 by Polling on USB_PORTSC2 [8:5]PLS=RESUME) and before Recovery state.

REVISIONS IMPACTED

SR 1.0

AM574x: 1.0

DRA75xP, DRA74xP, DRA77xP, DRA76xP: 1.0

TDA2Px: 1.0

AM576x: 1.0