Hi Patrick, On Tue, Nov 14, 2017 at 3:00 AM, Patrick Brünn <P.Bruenn@xxxxxxxxxxxx> wrote: >>From: Fabio Estevam [mailto:festevam@xxxxxxxxx] >>Sent: Montag, 13. November 2017 19:57 >>> I don't recall of any recent change in this area. >>> > I don't think the behavior changed recently. I tried a kernel 4.4.65 and it shows the same symptoms. I guess Noel really means 3.19-> 4.0. Or maybe by 'old kernel' he meant the vendor 2.6.35 kernel. I have the impression that the dryice driver has never worked in mainlune for mx53. > Unfortunately no. Did you run hwclock or rtctest? Yes, this is what I get: # hwclock -r -D hwclock from util-linux 2.31 System Time: 14.876372 Trying to open: /dev/rtc0 Using the rtc interface to the clock. Last drift adjustment done at 2167 seconds after 1969 Last calibrat[ 14.892484] imxdi_rtc 53fa4000.srtc: Write-wait timeout val = 08 ion done at 2167 seconds after 1969 Hardware clock is on UTC time Assuming hardware clock is kept in UTC time. Waiting for clock tick... hwclock: select() to /dev/rtc0 to wait for clock tick timed out ...synchronization failed > I still see: > root@CX9020:~# cat /proc/interrupts | grep rtc > 40: 0 tzic 24 Edge 53fa4000.srtc > 41: 0 tzic 25 Edge 53fa4000.srtc > root@CX9020:~# hwclock -D -r > hwclock from util-linux 2.29.2 > Using the /dev interface to the clock. > Last drift adjustment done at 1490885082 seconds after 1969 > Last calibration done at 1490885082 seconds after 1969 > Hardware clock is on UTC time > Assuming hardware clock is kept in UTC time. > Waiting for clock tick... > [ 41.035269] irq 40: nobody cared (try booting with the "irqpoll" option) > [ 41.042514] handlers: > [ 41.044847] [<c06031e0>] dryice_irq > [ 41.048398] Disabling IRQ #40 This error I don't get with the 2.31 hwclock version I tried.
