This patch enables and starts the watchdog on the MT7620 platform.
Currently the WD timeout is configured to 60 seconds.
Signed-off-by: Stefan Roese <s...@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierz...@gmail.com>
---
arch/mips/Kconfig | 1 +
arch/mips/mach-mt7620/cpu.c | 40 +++++++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 0aa23981d4..54a483075f 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -79,6 +79,7 @@ config ARCH_MT7620
select DM_SERIAL
imply DM_SPI
imply DM_SPI_FLASH
+ select ARCH_MISC_INIT if WATCHDOG
select MIPS_TUNE_24KC
select OF_CONTROL
select ROM_EXCEPTION_VECTORS
diff --git a/arch/mips/mach-mt7620/cpu.c b/arch/mips/mach-mt7620/cpu.c
index 457f09f32c..87cc973b75 100644
--- a/arch/mips/mach-mt7620/cpu.c
+++ b/arch/mips/mach-mt7620/cpu.c
@@ -6,6 +6,7 @@
#include <common.h>
#include <dm.h>
#include <ram.h>
+#include <wdt.h>
#include <asm/io.h>
#include <linux/io.h>
#include <linux/sizes.h>
@@ -67,3 +68,42 @@ int print_cpuinfo(void)
return 0;
}
+
+#ifdef CONFIG_WATCHDOG
+static struct udevice *watchdog_dev;
+
+/* Called by macro WATCHDOG_RESET */
+void watchdog_reset(void)
+{
+ static ulong next_reset;
+ ulong now;
+
+ if (!watchdog_dev)
+ return;
+
+ now = get_timer(0);
+
+ /* Do not reset the watchdog too often */
+ if (now > next_reset) {
+ next_reset = now + 1000; /* reset every 1000ms */
+ wdt_reset(watchdog_dev);
+ }
+}
+
+int arch_misc_init(void)
+{
+ /* Init watchdog */
+ if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) {
+ debug("Watchdog: Not found by seq!\n");
+ if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
+ puts("Watchdog: Not found!\n");
+ return 0;
+ }
+ }
+
+ wdt_start(watchdog_dev, 60000, 0); /* 60 seconds */
+ printf("Watchdog: Started\n");
+
+ return 0;
+}
+#endif
--
2.19.1
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