[PATCH v2 0/2] net: stmmac: eic7700: fix EIC7700 eth1 RX sampling timing

[李志]

Hi Marcel,

Thanks for sharing the details.

1. I checked your log and noticed that the kernel cmdline already includes
   "clk_ignore_unused". Therefore, your issue does not appear to be the
   same as the one previously reported by Bo Gan.

2. I also verified that v6.19.2 already contains the two eMMC fix patches:
   https://lore.kernel.org/all/CAPDyKFqcMyM-=x+2FWNLhHY=gu5ApHNPQhp0xBKDJGr7BhEx4Q@mail.gmail.com/
   https://lore.kernel.org/all/CAPDyKFrkEZDuMbGpfxismcx=vJkSSK_XbtB762+sUFocupT63w@mail.gmail.com/

   A likely cause is that the eMMC DTS node is missing the AXI clock definition.
   Please refer to the DTS updates in the following pull request for reference:
   https://github.com/eswincomputing/linux-next/pull/20

3. In addition, please check whether CONFIG_GPIO_DWAPB=y is enabled in your
   kernel configuration. Since GMAC is built-in by default, it depends on
   GPIO being available during early initialization.

Hope this helps narrow things down. Please let me know what you find.

Best regards,
Zhi Li


> -----原始邮件-----
> 发件人: "Marcel Ziswiler" <marcel at ziswiler.com>
> 发送时间:2026-02-21 02:37:57 (星期六)
> 收件人: lizhi2 at eswincomputing.com, devicetree at vger.kernel.org, andrew+netdev at lunn.ch, davem at davemloft.net, edumazet at google.com, kuba at kernel.org, robh at kernel.org, krzk+dt at kernel.org, conor+dt at kernel.org, netdev at vger.kernel.org, pabeni at redhat.com, mcoquelin.stm32 at gmail.com, alexandre.torgue at foss.st.com, rmk+kernel at armlinux.org.uk, linux-stm32 at st-md-mailman.stormreply.com, linux-arm-kernel at lists.infradead.org, linux-kernel at vger.kernel.org
> 抄送: ningyu at eswincomputing.com, linmin at eswincomputing.com, pinkesh.vaghela at einfochips.com, weishangjuan at eswincomputing.com, dongxuyang at eswincomputing.com
> 主题: Re: [PATCH v2 0/2] net: stmmac: eic7700: fix EIC7700 eth1 RX sampling timing
> 
> Hi Zhi Li
> 
> Sorry, to steal this thread, but I do have a quick question concerning Ethernet on the EIC7700. Every time I
> enable gmac0 in the device tree my EBC7700 stops booting (e.g. SD card is no longer detected) while Ethernet
> does seem to at least get detected. This has been seen using next-20260219, stable v6.19.2 [1] as well as
> 6.18.0-rc6 [2]. Any idea what could be going wrong?
> 
> I admit so far I only do have one single EBC7700 at hand while waiting for further hardware to arrive.
> 
> Thanks!
> 
> [1] https://github.com/riscv/meta-riscv/pull/601
> [2] https://github.com/eswincomputing/linux-next/tree/dev/test-upstream-v6.18-rc6
> 
> Cheers
> 
> Marcel
> 
> [snip]