imx8ulp: soc: correct reset cause
The CMC1 SRS reflects the current reset cause, not SSRS.
Then you could get "Reset cause: WARM-WDG" when issue reset in U-Boot.
Reviewed-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/mach-imx/imx8ulp/soc.c b/arch/arm/mach-imx/imx8ulp/soc.c
index 0728cb9..9bdbe3c 100644
--- a/arch/arm/mach-imx/imx8ulp/soc.c
+++ b/arch/arm/mach-imx/imx8ulp/soc.c
@@ -149,8 +149,6 @@
#define CMC_SRS_POR BIT(1)
#define CMC_SRS_WUP BIT(0)
-static u32 reset_cause = -1;
-
static char *get_reset_cause(char *ret)
{
u32 cause1, cause = 0, srs = 0;
@@ -163,9 +161,7 @@
srs = readl(reg_srs);
cause1 = readl(reg_ssrs);
- reset_cause = cause1;
-
- cause = cause1 & (CMC_SRS_POR | CMC_SRS_WUP | CMC_SRS_WARM);
+ cause = srs & (CMC_SRS_POR | CMC_SRS_WUP | CMC_SRS_WARM);
switch (cause) {
case CMC_SRS_POR:
@@ -175,7 +171,7 @@
sprintf(ret, "%s", "WUP");
break;
case CMC_SRS_WARM:
- cause = cause1 & (CMC_SRS_WDG | CMC_SRS_SW |
+ cause = srs & (CMC_SRS_WDG | CMC_SRS_SW |
CMC_SRS_JTAG_RST);
switch (cause) {
case CMC_SRS_WDG:
@@ -193,7 +189,7 @@
}
break;
default:
- sprintf(ret, "%s-%X", "UNKN", cause1);
+ sprintf(ret, "%s-%X", "UNKN", srs);
break;
}