Hi Alexandre, On 2/1/20, Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> wrote: > On 31/01/2020 16:27:15+1100, JH wrote: >> Hi Alexandre, >> >> On 1/31/20, Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> wrote: >> >> So it was already included in 4.19, I don't need to patch it, that is >> >> good :-). Sorry I am still not clear how to stop that error message of >> >> "rtc rtc0: Timeout trying to get valid LPSRT Counter read", the >> >> message says "To avoid kernel hangs, put in timeouts", I am running >> >> kernel 4.19.75 on iMX6, where should I put in timeouts? >> >> >> > >> > The patch is adding the timeouts, without them, your kernel would be >> > freezing. I'd say your issue is the 32k clock. >> >> Did you mean that is the issue of the hardware setup IMX6ULL for 32k >> RTC_XTALI? That is nominal frequency 32.768 kHz for IMX6ULL EVK and >> customized devices. Change to which frequency (64k?) can fix the >> problem and remove the error message? >> > > I can't help much more without seeing the schematics of your particular > board. 32k is the correct frequency but are your sure it is going to the > RTC? Are you sure you have power on VDD_SNVS_IN? Was there a security > violation detected? The XTALI and XTALO is connected to 24 MHz Y501 XTALI Oscillator, the RTC_XTALI and RTC_XTALO is connected to Y502 32.768KHZ crystal. Don't know about VDD_SNVS_IN, The hardware was designed by an experienced hardware engineers, I am not sure if they could make any silly mistakes. Thank you Alexandre, Kind regards, - jh
