回复: [PATCH] net: stmmac: enable MAC after MTL configuring
Andrew Lunn
andrew at lunn.ch
Fri Oct 18 10:57:17 PDT 2024
On Fri, Oct 18, 2024 at 01:15:30AM +0000, Fan Hailong/范海龙 wrote:
> Hi
>
> For example, ETH is directly connected to the switch, which never power down and sends broadcast packets at regular intervals.
> During the process of opening ETH, data may flow into the MTL FIFO, once MAC RX is enabled.
> and then, MTL will be set, such as FIFO size.
> Once enable DMA, There is a certain probability that DMA will read incorrect data from MTL FIFO, causing DMA to hang up.
> By read DMA_Debug_Status, you can be observed that the RPS remains at a certain value forever.
> The correct process should be to configure MAC/MTL/DMA before enabling DMA/MAC
What Simon is asking for is that this is part of the commit message.
Please also don't top post.
Andrew
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pw-bot: cr
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