Do the same as the Linux kernel does, this fixes the SoC hanging on reset about 50% of the time.
Signed-off-by: Hans de Goede hdegoede@redhat.com --- arch/arm/cpu/armv7/sunxi/board.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/sunxi/board.c b/arch/arm/cpu/armv7/sunxi/board.c index 024c8c1..2898833 100644 --- a/arch/arm/cpu/armv7/sunxi/board.c +++ b/arch/arm/cpu/armv7/sunxi/board.c @@ -75,7 +75,11 @@ void reset_cpu(ulong addr) /* Set the watchdog for its shortest interval (.5s) and wait */ writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); writel(WDT_CTRL_KEY | WDT_CTRL_RESTART, &wdog->ctl); - while (1); + + while (1) { + /* sun5i sometimes gets stuck without this */ + writel(WDT_MODE_RESET_EN | WDT_MODE_EN, &wdog->mode); + } }
/* do some early init */