AM3352: How to set the CPDMA channel of the two ports of CPSW as Port 0 as CPDMA channel 0 Port 1 as CPDMA channel 1

riqing hua

Part Number: AM3352

I set the sending and receiving DMA channels of the two ports as port0 and configured them as CPDMA channel0 and port1 as CPDMA channel1. Both network ports can communicate independently, but if the two network ports are enabled at the same time, the system will be stuck. What are the common places that cause conflicts?

How can I correctly set the CPDMA channel of the two ports of CPSW as Port 0 as CPDMA channel 0 Port 1 as CPDMA channel 1

3 年多前

0 Shine 3 年多前

TI__Guru**** 357097 points

请问用的是哪个processor SDK?
https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-AM335X

log信息是什么？

0 riqing hua 3 年多前回复 Shine

我们的内核版本是3.12，卡死的时候没有log打印出来，终端直接卡死

0 Shine 3 年多前回复 riqing hua

TI__Guru**** 357097 points

我把您的问题升级到英文e2e论坛了，请关注下面帖子的回复。
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1164336/am3352-how-to-set-the-cpdma-channel-of-the-two-ports-of-cpsw-port-0-use-cpdma-channel-0-and-port-1-use-cpdma-channel-1

0 Shine 3 年多前回复 riqing hua

TI__Guru**** 357097 points

请看下面工程师的回复。建议使用新版本的SDK，看是否有同样的问题。

The 3.12 kernel is well beyond the support time period. TI does not maintain any information related to your question and therefore unfortunately will not be able to provide an answer.

If moving to a later kernel is not a possibility then the customer could research the differences between the 3.12 and a later kernel and back port those differences they find relevant to the issue they are experiencing. The immediate kernel released after 3.12 was 3.14.

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AM3352: How to set the CPDMA channel of the two ports of CPSW as Port 0 as CPDMA channel 0 Port 1 as CPDMA channel 1