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ARM specifies that SysTick RELOAD must be programmed with N-1 to get a period of N CPU cycles. Adjust the timeout/reload conversions accordingly: subtract 1 when writing RELOAD and add 1 back when converting RELOAD to a timeout/interval. Also clamp RELOAD to the valid 24-bit range (1..0x00ffffff) for Armv7-M/Armv8-M to avoid invalid values. Reference: https://developer.arm.com/documentation/dui0646/c/Cortex-M7-Peripherals/System-timer--SysTick/SysTick-Reload-Value-Register Signed-off-by: Gao Jiawei <gaojiawei@xiaomi.com> |
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| .. | ||
| boardctl.h | ||
| custom_file.h | ||
| endian.h | ||
| epoll.h | ||
| eventfd.h | ||
| fcntl.h | ||
| file.h | ||
| gmon.h | ||
| inotify.h | ||
| ioctl.h | ||
| ipc.h | ||
| mman.h | ||
| mount.h | ||
| msg.h | ||
| param.h | ||
| pciio.h | ||
| poll.h | ||
| prctl.h | ||
| queue.h | ||
| random.h | ||
| resource.h | ||
| select.h | ||
| sem.h | ||
| sendfile.h | ||
| shm.h | ||
| signal.h | ||
| signalfd.h | ||
| socket.h | ||
| sockio.h | ||
| stat.h | ||
| statfs.h | ||
| statvfs.h | ||
| syscall.h | ||
| syscall_lookup.h | ||
| sysinfo.h | ||
| sysmacros.h | ||
| time.h | ||
| timerfd.h | ||
| times.h | ||
| timex.h | ||
| tree.h | ||
| types.h | ||
| uio.h | ||
| un.h | ||
| utsname.h | ||
| vfs.h | ||
| video_controls.h | ||
| videoio.h | ||
| wait.h | ||