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TS-75XX Product Errata |
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Documentation from June-2010
Number: 01
| Synopsis: |
16ms Delay with ETH0 Disconnected |
| Severity: |
Minor |
| Class: |
Kernel Bug |
| Release: |
All TS-75XX/TS-4500 Boards |
| Status: |
Workarounds available |
Description:
The Cavium STR8100 NIC driver was programmed with 16ms delays when Ethernet is physically disconnected (see function static void internal_phy_patch_check(int init) of .../drivers/net/str8100/star_nic.c). This causes delayed responses in real-time applications such as canctl. When Ethernet is physically connected, the issue is nonexistent.
TS-7500/TS-7550 users wanting to utilize real-time responses without Ethernet plugged in will need to:
- Bring the eth0 interface down with the command:
ifconfig eth0 down
- Recompile the kernel without the Ethernet driver from Cavium (
.../drivers/net/str8100/star_nic.c)
Number: 02
| Synopsis: |
3.3V Rail Slump |
| Severity: |
Minor |
| Class: |
Hardware |
| Release: |
All TS-7500/TS-7550 Boards |
| Status: |
No Fixes or Workarounds |
Description:
Power on transients of SD card will cause a 3.3V rail slump which effects Ethernet link for approximately 1 second.
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