Board code might want to disable the watchdog in PBL and enable it later
prior to boot. Provide a helper to do so.
Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
arch/arm/mach-at91/include/mach/at91_wdt.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm/mach-at91/include/mach/at91_wdt.h b/arch/arm/mach-at91/include/mach/at91_wdt.h
index 36d37b9d2d64..d295d35d1b5c 100644
--- a/arch/arm/mach-at91/include/mach/at91_wdt.h
+++ b/arch/arm/mach-at91/include/mach/at91_wdt.h
@@ -35,4 +35,20 @@
#define AT91_WDT_WDUNF (1 << 0) /* Watchdog Underflow */
#define AT91_WDT_WDERR (1 << 1) /* Watchdog Error */
+#ifndef __ASSEMBLY__
+// SPDX-License-Identifier: BSD-1-Clause
+/*
+ * Copyright (c) 2006, Atmel Corporation
+ */
+
+#include <asm-generic/io.h>
+
+static inline void at91_wdt_disable(void __iomem *wdt_base)
+{
+ u32 reg = readl(wdt_base + AT91_WDT_MR);
+ reg |= AT91_WDT_WDDIS;
+ writel(reg, wdt_base + AT91_WDT_MR);
+}
+
+#endif /* __ASSEMBLY__ */
#endif
--
2.27.0
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