diff options
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/imx_thermal.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index b5dab630ff..0d893c9d06 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -19,6 +19,8 @@ #include <thermal.h> #include <imx_thermal.h> +/* board will busyloop until this many degrees C below CPU max temperature */ +#define TEMPERATURE_HOT_DELTA 5 /* CPU maxT - 5C */ #define FACTOR0 10000000 #define FACTOR1 15976 #define FACTOR2 4297157 @@ -34,7 +36,7 @@ struct thermal_data { unsigned int fuse; - int passive; + int critical; int minc; int maxc; }; @@ -129,9 +131,10 @@ int imx_thermal_get_temp(struct udevice *dev, int *temp) cpu_tmp = read_cpu_temperature(dev); while (cpu_tmp > priv->minc && cpu_tmp < priv->maxc) { - if (cpu_tmp >= priv->passive) { - printf("CPU Temperature is %d C, too hot to boot, waiting...\n", - cpu_tmp); + if (cpu_tmp >= priv->critical) { + printf("CPU Temperature (%dC) too close to max (%dC)", + cpu_tmp, priv->maxc); + puts(" waiting...\n"); udelay(5000000); cpu_tmp = read_cpu_temperature(dev); } else { @@ -164,9 +167,9 @@ static int imx_thermal_probe(struct udevice *dev) return -EPERM; } - /* set passive cooling temp to max - 20C */ + /* set critical cooling temp */ get_cpu_temp_grade(&priv->minc, &priv->maxc); - priv->passive = priv->maxc - 20; + priv->critical = priv->maxc - TEMPERATURE_HOT_DELTA; priv->fuse = fuse; enable_thermal_clk(); |
