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hw/timer: Adding watchdog for NPCM7XX Timer.

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The watchdog is part of NPCM7XX's timer module. Its behavior is
controlled by the WTCR register in the timer.

When enabled, the watchdog issues an interrupt signal after a pre-set
amount of cycles, and issues a reset signal shortly after that.

Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Signed-off-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Havard Skinnemoen <hskinnemoen@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: deleted blank line at end of npcm_watchdog_timer-test.c]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Hao Wu 2020-10-23 14:06:34 -07:00 • committed by Peter Maydell
parent 2ac88848cb
commit 7d378ed6e3
8 changed files with 624 additions and 54 deletions
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2
include/hw/misc/npcm7xx_clk.h
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@ -31,6 +31,8 @@
*/
#define NPCM7XX_CLK_NR_REGS (0x70 / sizeof(uint32_t))
#define NPCM7XX_WATCHDOG_RESET_GPIO_IN "npcm7xx-clk-watchdog-reset-gpio-in"
typedef struct NPCM7xxCLKState {
SysBusDevice parent;