Searched hist:"23 f00caf6ebb9bcb804e48f5a4630629f64af471" (Results 1 – 1 of 1) sorted by relevance
| /rk3399_rockchip-uboot/arch/arm/cpu/pxa/ |
| H A D | pxa2xx.c | 23f00caf6ebb9bcb804e48f5a4630629f64af471 Tue Dec 17 01:03:40 UTC 2013 Sergei Ianovich <ynvich@gmail.com> ARM: pxa: prevent PXA270 occasional reboot freezes
Erratum 71 of PXA270M Processor Family Specification Update
(April 19, 2010) explains that watchdog reset time is just
8us insead of 10ms in EMTS.
If SDRAM is not reset, it causes memory bus congestion and
the device hangs.
We put SDRAM in selfresh mode before watchdog reset, removing
potential freezes.
Signed-off-by: Sergei Ianovich <ynvich@gmail.com>
CC: Marek Vasut <marex@denx.de>
|