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imx8ulp: soc: correct reset cause

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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>
This commit is contained in:
Peng Fan 2021-08-07 16:01:06 +08:00 committed by Stefano Babic
parent d24c7d54f0
commit 8a58897e0e
1 changed files with 3 additions and 7 deletions
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10
arch/arm/mach-imx/imx8ulp/soc.c
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@ -149,8 +149,6 @@ enum bt_mode get_boot_mode(void)
#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 @@ static char *get_reset_cause(char *ret)
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 @@ static char *get_reset_cause(char *ret)
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 @@ static char *get_reset_cause(char *ret)
}
break;
default:
sprintf(ret, "%s-%X", "UNKN", cause1);
sprintf(ret, "%s-%X", "UNKN", srs);
break;
}