View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001581 | K18X001.00 SKB SWAN | HW Issue | public | 2022-12-21 09:32 | 2025-04-11 21:26 |
| Reporter | (ALTech) Lonnie Kim | Assigned To | Due Date | 2022-12-28 10:27 | |
| Priority | high | Severity | s4-minor | Reproducibility | random |
| Status | closed | Resolution | fixed | ||
| Summary | 0001581: [SWAN]USB Hub IC reset control | ||||
| Description | Hi Sean I have question about reset for USB2.0 Hub IC. When SoC control reset signal for USB2.0 Hub during operation? Please refer to attached file. If no, please let me know. Please discuss with Jacky(SW), then give me a feedback. Best regards Lonnie Kim | ||||
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Hi Fu-Chiang, As discussed, please check with River and feedback this question to Lonnie. Thanks. Regards, Sean |
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Hi Mr. Loonie, This pin is from GPO[16] which SW team had fixed GPIO 3.3V level issue. Also this pin is used to reset USB hub when system wakes up from passive standby mode. The purpose is to stabilize the USB hub while BT module connects to it. If the GPIO is cancelled and replaced by V33 pull high, the BT might has stabilization issue. SW team also suggests not to cancel this GPIO. Thank you. |
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Hi Mr. Sean Chiang, As we discussed on weekly meeting last week, please check it with your SW team agian. Hi Mr. Fu-Chiang, Could you check it with Mr. Sean Chiang ? We are checking it for repair purpose only. We would like to know when your SW reset Hub IC during the operation. Best Regards, SuhYoung YOON |
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Hi Mr.Yoon and Lonnie, Currently, the software reset for USB Hub only operated when the system is powered on. If it's just for repair purposes or to clarify the BT failure, It's OK to do this change. However, I'm aware that our software team is now implementing the passive standby functionality. And we found that the USB hub may be unstable when resuming from passive standby. So, we have to use SoC to reset USB Hub again to make sure it works normally after passive standby. If the board's USB hub is implemented with a hardware power reset, the board will not be suitable for introducing passive standby functionality. Regards, Sean |
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No more action. So, close this issue. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2022-12-21 09:32 | (ALTech) Lonnie Kim | New Issue | |
| 2022-12-21 09:32 | (ALTech) Lonnie Kim | Status | new => assigned |
| 2022-12-21 09:32 | (ALTech) Lonnie Kim | Assigned To | => (HW) Sean Chiang |
| 2022-12-21 09:32 | (ALTech) Lonnie Kim | File Added: USB Hub Reset.pptx | |
| 2022-12-21 09:32 | (ALTech) Lonnie Kim | Issue Monitored: (ALTech) Wooshin Kang | |
| 2022-12-21 09:33 | (ALTech) Lonnie Kim | Issue Monitored: (ALTech) Sun Choul Joung | |
| 2022-12-21 09:34 | (ALTech) Lonnie Kim | Issue Monitored: (ALTech) SY Yoon | |
| 2022-12-21 18:04 | (HW) Sean Chiang | Issue Monitored: (RD) Fu-chiang Young | |
| 2022-12-21 18:05 | (HW) Sean Chiang | Issue Monitored: (HW) Tom Lee | |
| 2022-12-22 17:11 | (HW) Sean Chiang | Assigned To | (HW) Sean Chiang => (RD) Fu-chiang Young |
| 2022-12-22 17:16 | (HW) Sean Chiang | Note Added: 0011546 | |
| 2022-12-22 17:22 |
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Note Added: 0011547 | |
| 2022-12-26 16:13 | (SW) Jacky Chiang | Assigned To | (RD) Fu-chiang Young => (SW) Jacky Chiang |
| 2022-12-26 16:13 | (SW) Jacky Chiang | Severity | s2-severe => s4-minor |
| 2022-12-26 16:13 | (SW) Jacky Chiang | Assigned To | (SW) Jacky Chiang => (RD) Fu-chiang Young |
| 2022-12-29 15:32 | (ALTech) SY Yoon | Note Added: 0011608 | |
| 2022-12-30 00:52 | (HW) Sean Chiang | Note Added: 0011613 | |
| 2025-04-11 21:26 | (HW) Sean Chiang | Status | assigned => closed |
| 2025-04-11 21:26 | (HW) Sean Chiang | Resolution | open => fixed |
| 2025-04-11 21:26 | (HW) Sean Chiang | Note Added: 0017472 |
