This adds watchdog disable. It is neccessary for running Linux kernel.
Signed-off-by: Pavel Machek <pa...@denx.de>
diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c
b/arch/arm/cpu/armv7/socfpga/reset_manager.c
index e320c01..5503059 100644
--- a/arch/arm/cpu/armv7/socfpga/reset_manager.c
+++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c
@@ -14,6 +14,19 @@ DECLARE_GLOBAL_DATA_PTR;
static const struct socfpga_reset_manager *reset_manager_base =
(void *)SOCFPGA_RSTMGR_ADDRESS;
+#define RSTMGR_PERMODRST_L4WD0_LSB 6
+
+/* Disable the watchdog (toggle reset to watchdog) */
+void watchdog_disable(void)
+{
+ /* assert reset for watchdog */
+ setbits_le32(&reset_manager_base->per_mod_reset,
+ (1<<RSTMGR_PERMODRST_L4WD0_LSB));
+ /* deassert watchdog from reset (watchdog in not running state) */
+ clrbits_le32(&reset_manager_base->per_mod_reset,
+ (1<<RSTMGR_PERMODRST_L4WD0_LSB));
+}
+
/*
* Write the reset manager register to cause reset
*/
diff --git a/arch/arm/include/asm/arch-socfpga/reset_manager.h
b/arch/arm/include/asm/arch-socfpga/reset_manager.h
index 3e95476..eb95c5b 100644
--- a/arch/arm/include/asm/arch-socfpga/reset_manager.h
+++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
@@ -10,6 +10,8 @@
void reset_cpu(ulong addr);
void reset_deassert_peripherals_handoff(void);
+void watchdog_disable(void);
+
struct socfpga_reset_manager {
u32 status;
u32 ctrl;
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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