After last clock fix on pcie2 modem fm350gl stopped to work in USB mode and now it appears like:
root@OpenWrt:/# lspci
...
0003:01:00.0 Wireless controller [0d40]: MEDIATEK Corp. Device 4d75 (rev 01) >>
I wish to know if there is any chance to have a control on it (how we can revert such clock fix if not used - in my case before it was not used and in the slot modem fm350gl was working ok? otherwise I dont know of we can go with trying to fix the issue on pcie communication here. Probably we need a kmod_t7xx (https://cateee.net/lkddb/web-lkddb/MTK_T7XX.html ) but it seems now it is not yet available in openwrt?
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Per now I found only way to come back as revert the patch:
in target/linux/mediatek/patches-6.x/252-clk-mediatek-mt7988-infracfg-fix-clocks-for-2nd-PCIe.patch (line 159):
is (pcie mode): "infra_pcie_peri_ck_26m_ck_p3", 9),
should be (usb mode): "csw_infra_f26m_sel", 9),
and recompile the image.