Am 17.04.2022 15:36, schrieb Hauke Mehrtens:
Is there a Mediatek eeprom at this location?
I would guess so, by comparing the content with a device that does have on-board WiFi.
If there is normally real eeprom data then we should probably us it if someone put the correct card in.
Please correct me if I am wrong, but I think a removable mPCIe card is always required to have its own EEPROM, which should be more accurate for that particular card than anything that happens to be on the flash of the SoC module it happens to get connected to.
I don't know what information is exactly contained in that (emulated) EEPROM, but I would expect stuff that depends on the circuitry around the WiFi chip, such as antenna configuration, LED existance and polarity, but it might even contain HF calibration data that is specific to a particular copy of the chip.
I guess that this EEPROM data is only there by accident, because some SDK or BSP from MediaTek happens to have it there by default, configured for some common WiFi chip, and the module manufacturer did not bother to disable it, although it is not really needed.
cu Reinhard _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
