[OpenWrt-Devel] Rebooting boards with > 16M SPI flash
fercerpav at gmail.com
Thu Jul 9 04:24:15 EDT 2015
Arjen de Korte <arjen+openwrt at de-korte.org> writes:
> Citeren Paul Fertser <fercerpav at gmail.com>:
>> Another is
>> that such a patch is mostly a bad substitute for proper hardware design.
> Not really. There may not be a hardware reset line if the flash is
> running in x4 data mode.
Imagine there's a bug in the kernel that made it hang for real. Then
you're counting on the watchdog (usually SoCs come with one integrated)
to cleanly reboot the whole system. If the flash is used in QSPI or
whatever other mode that doesn't allow a dedicated reset line then it
needs to be powercycled on hardware level to ensure reliable operation,
Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software!
mailto:fercerpav at gmail.com
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org
More information about the openwrt-devel