On 2024-07-10 16:50, Chukun Pan wrote: >> Where do you find the 72ms in the datasheet? > > I refer to this commit: > https://github.com/torvalds/linux/commit/1c7412530d5d0e0a0b27f1642f5c13c8b9f36f05 > BTW I found that some boards use the RTL8211F-VD PHY, > but I can't find the datasheet. Thanks, I can also see in RTL8211F-VD-CG (Rev 1.0 - 08 February 2022): For a complete PHY reset, this pin must be asserted low for at least 10ms for the internal regulator. Wait for at least 72ms* before accessing the PHY register. * Note: Not included the 0.9V rise time. So using 80-100ms may be the best option to be on the safe side, should probably send a fix for recently added boards where I used 50ms. Regards, Jonas > >> In RTL8211F-CG v1.1 I see 10ms and minimum of 30ms, in v1.2 and v1.4 >> I see 10ms and minimum of 50ms. > >> I have used 50ms on a few recently added boards and they seem to all >> work fine with 50ms, wonder if the deassert delay should be changed for >> those boards. > > Thanks, > Chukun >
