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--- en:c1_watchdog_timer [2015/10/30 19:20]
moon.linux [Watchdog demon configuration files]
+++ en:c1_watchdog_timer [2015/11/03 12:46]
moon.linux [Test Watchdog module]
@@ Line 11: / Line 11: @@
 Watchdog driver aml_wdt is configurable for Odroid C1/C1+.
 </WRAP>
+**Kernel Changes Need to make this working.**
+You probably need to recompile the kernel with this changes.
+<code>
+diff --git a/drivers/amlogic/watchdog/aml_wdt.c b/drivers/amlogic/watchdog/aml_wdt.c
+index e7b34b5..4ac15df 100644
+--- a/drivers/amlogic/watchdog/aml_wdt.c
++++ b/drivers/amlogic/watchdog/aml_wdt.c
+@@ -102,7 +102,7 @@ static void boot_moniter_work(struct work_struct *work)
+ }
+ static const struct watchdog_info aml_wdt_info = {
+-       .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
++       .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
+        .identity = "aml Watchdog",
+ };
+diff --git a/include/linux/amlogic/aml_wdt.h b/include/linux/amlogic/aml_wdt.h
+index 08c12ab..e1f7c4a 100644
+--- a/include/linux/amlogic/aml_wdt.h
++++ b/include/linux/amlogic/aml_wdt.h
+@@ -44,19 +44,19 @@ struct aml_wdt_dev {
+ #define AML_WDT_ENABLED (aml_read_reg32(P_WATCHDOG_TC)&(1 << WATCHDOG_ENABLE_BIT))
+ static inline void disable_watchdog(void)
+ {
+-       printk(KERN_INFO "** disable watchdog\n");
++       pr_emerg("** disable watchdog\n");
+        aml_write_reg32(P_WATCHDOG_RESET, 0);
+        aml_clr_reg32_mask(P_WATCHDOG_TC,(1 << WATCHDOG_ENABLE_BIT));
+ }
+ static inline void enable_watchdog(unsigned int timeout)
+ {
+-       printk(KERN_INFO "** enable watchdog\n");
++       pr_emerg("** enable watchdog\n");
+        aml_write_reg32(P_WATCHDOG_RESET, 0);
+        aml_write_reg32(P_WATCHDOG_TC, 1 << WATCHDOG_ENABLE_BIT |(timeout|WATCHDOG_COUNT_MASK));
+ }
+ static inline void reset_watchdog(void)
+ {
+-       printk(KERN_DEBUG"** reset watchdog\n");
++       pr_info("** reset watchdog\n");
+        aml_write_reg32(P_WATCHDOG_RESET, 0);
+ }
+ #ifdef CONFIG_AML_WDT
+</code>
 You should be able to see /dev/watchdog and /dev/watchdog0 device files being created.