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-rw-r--r--src/mainboard/google/kukui/boardid.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/mainboard/google/kukui/boardid.c b/src/mainboard/google/kukui/boardid.c
index b9f1ba2226..71f051f312 100644
--- a/src/mainboard/google/kukui/boardid.c
+++ b/src/mainboard/google/kukui/boardid.c
@@ -15,6 +15,7 @@
#include <assert.h>
#include <boardid.h>
+#include <console/console.h>
#include <soc/auxadc.h>
#include <ec/google/chromeec/ec.h>
#include <stddef.h>
@@ -82,8 +83,13 @@ static uint32_t get_adc_index(unsigned int channel)
if (value < (voltages[id] + voltages[id + 1]) / 2)
break;
+ /* The last level is NC and may be larger than standard tolerance. */
const int tolerance = 10000; /* 10,000 uV */
- assert(ABS(value - voltages[id]) < tolerance);
+ if (id < ADC_LEVELS - 1 && ABS(value - voltages[id]) > tolerance) {
+ printk(BIOS_ERR, "ADC channel %u value out of range: %d\n",
+ channel, value);
+ assert(0);
+ }
return id;
}