From cde504077e1ce94d9ad34ece0f3e882972404297 Mon Sep 17 00:00:00 2001
From: Ye Li <ye.li@nxp.com>
Date: Tue, 7 Feb 2017 22:48:01 +0800
Subject: [PATCH] MLK-14422 imx7d: wdog: Overwrite the reset_cpu to turn off
internal reset signal
Set wdog WCR register SRS bit to turn off internal reset signal WDOG_RESET_B_DEB
for mx7d. So that the warm reset is disabled.
The WDA is cleared to output WDOG_B immediately to reset the board.
Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 6d09863801695d975060fbc240147a9067dbafbf)
---
arch/arm/mach-imx/mx7/soc.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/mach-imx/mx7/soc.c b/arch/arm/mach-imx/mx7/soc.c
index 6ccdc20..96eb782 100644
--- a/arch/arm/mach-imx/mx7/soc.c
+++ b/arch/arm/mach-imx/mx7/soc.c
@@ -19,6 +19,7 @@
#include <dm.h>
#include <imx_thermal.h>
#include <fsl_sec.h>
+#include <fsl_wdog.h>
#if defined(CONFIG_IMX_THERMAL)
static const struct imx_thermal_plat imx7_thermal_plat = {
@@ -302,3 +303,16 @@ void reset_misc(void)
#endif
}
+void reset_cpu(ulong addr)
+{
+ struct watchdog_regs *wdog = (struct watchdog_regs *)WDOG1_BASE_ADDR;
+
+ /* Clear WDA to trigger WDOG_B immediately */
+ writew((WCR_WDE | WCR_SRS), &wdog->wcr);
+
+ while (1) {
+ /*
+ * spin for .5 seconds before reset
+ */
+ }
+}
--
1.9.1