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sunxi: Fix reset hang on sun5i

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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>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2014-06-13 22:55:52 +02:00 • committed by Ian Campbell
parent 2428920835
commit ae5de5a19d
1 changed files with 5 additions and 1 deletions
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6
arch/arm/cpu/armv7/sunxi/board.c
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@ -77,7 +77,11 @@ 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 */