https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=266093
--- Comment #3 from commit-h...@freebsd.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=e2386f18eca2f6f75f7c5c2d49d603e3d2674509 commit e2386f18eca2f6f75f7c5c2d49d603e3d2674509 Author: Tetsuya Uemura <t_uem...@macome.co.jp> AuthorDate: 2022-09-14 13:34:15 +0000 Commit: Warner Losh <i...@freebsd.org> CommitDate: 2022-09-14 13:34:15 +0000 nxprtc: Fix timing issue with register access. My Adafruit PCF8523 RTC on either RPi2B or RPi3B+ failed to work around 80 ~ 90 % of boot-ups, by printing the following log lines. nxprtc0: <NXP PCF8523 RTC> at addr 0xd0 on iicbus0 nxprtc0: cannot set up timer Warning: no time-of-day clock registered, system time will not be set accurately This is due to pcf8523_start_timer(sc) returned non-zero in nxprtc_start() due to a register read failure of PCF8523_R_TMR_A_FREQ or PCF8523_R_TMR_CLKOUT or a failure to program a new value. The pause_sbt("nxpbat") sleep was too short and caused the register access failures. PR: 266093 sys/dev/iicbus/nxprtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- You are receiving this mail because: You are the assignee for the bug.
