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mx7ulp: Print the LDO mode status

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As per the i.MX7ULP datasheet, it can boot in LDO enabled mode
or LDO bypass mode.

Print the LDO mode status in the U-Boot log for convenience.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
This commit is contained in:
Fabio Estevam 2019-11-05 09:47:50 -03:00 • committed by Stefano Babic
parent a80a49b237
commit 72a093a8ac
1 changed files with 20 additions and 0 deletions
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20
arch/arm/mach-imx/mx7ulp/soc.c
View file

@ -132,6 +132,21 @@ const char *get_imx_type(u32 imxtype)
return "7ULP"; return "7ULP";
} }
#define PMC0_BASE_ADDR 0x410a1000
#define PMC0_CTRL 0x28
#define PMC0_CTRL_LDOEN BIT(31)
static bool ldo_mode_is_enabled(void)
{
unsigned int reg;
reg = readl(PMC0_BASE_ADDR + PMC0_CTRL);
if (reg & PMC0_CTRL_LDOEN)
return true;
else
return false;
}
int print_cpuinfo(void) int print_cpuinfo(void)
{ {
u32 cpurev; u32 cpurev;
@ -160,6 +175,11 @@ int print_cpuinfo(void)
break; break;
} }
if (ldo_mode_is_enabled())
printf("PMC1: LDO enabled mode\n");
else
printf("PMC1: LDO bypass mode\n");
return 0; return 0;
} }
#endif #endif