diff options
Diffstat (limited to 'arch/arm/mach-imx/system.c')
| -rw-r--r-- | arch/arm/mach-imx/system.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c index 826b72ba08d9..5e3027d3692f 100644 --- a/arch/arm/mach-imx/system.c +++ b/arch/arm/mach-imx/system.c @@ -52,7 +52,14 @@ void mxc_restart(enum reboot_mode mode, const char *cmd) /* Assert SRS signal */ __raw_writew(wcr_enable, wdog_base); - /* write twice to ensure the request will not get ignored */ + /* + * Due to imx6q errata ERR004346 (WDOG: WDOG SRS bit requires to be + * written twice), we add another two writes to ensure there must be at + * least two writes happen in the same one 32kHz clock period. We save + * the target check here, since the writes shouldn't be a huge burden + * for other platforms. + */ + __raw_writew(wcr_enable, wdog_base); __raw_writew(wcr_enable, wdog_base); /* wait for reset to assert... */ |