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MIPS: ath79: Fix ar933x watchdog clock 

The watchdog device on the AR933x is connected to
the AHB clock, however the current code uses the
reference clock. Due to the wrong rate, the watchdog
driver can't calculate correct register values for
a given timeout value and the watchdog unexpectedly
restarts the system.

The code uses the wrong value since the initial
commit 04225e1d22
(MIPS: ath79: add AR933X specific clock init)

The patch fixes the code to use the correct clock
rate to avoid the problem.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/5777/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Felix Fietkau 2013-08-28 10:41:42 +02:00 committed by Ralf Baechle
parent 70c3c4cd2d
commit a1191927ac
1 changed files with 1 additions and 1 deletions
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2
arch/mips/ath79/clock.c
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@ -164,7 +164,7 @@ static void __init ar933x_clocks_init(void)
ath79_ahb_clk.rate = freq / t;
}
ath79_wdt_clk.rate = ath79_ref_clk.rate;
ath79_wdt_clk.rate = ath79_ahb_clk.rate;
ath79_uart_clk.rate = ath79_ref_clk.rate;
}