diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/arm_cortexa8/mx6/generic.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/cpu/arm_cortexa8/mx6/generic.c b/cpu/arm_cortexa8/mx6/generic.c index 60c87c7..6a98d04 100644 --- a/cpu/arm_cortexa8/mx6/generic.c +++ b/cpu/arm_cortexa8/mx6/generic.c @@ -101,10 +101,10 @@ enum pll_clocks { #endif #define OCOTP_THERMAL_OFFSET 0x4E0 -#define TEMPERATURE_MIN -25 +#define TEMPERATURE_MIN -40 #define TEMPERATURE_HOT 80 #define TEMPERATURE_MAX 125 -#define REG_VALUE_TO_CEL(ratio, raw) ((raw_n25c - raw) * 100 / ratio - 25) +#define REG_VALUE_TO_CEL(ratio, raw) ((raw_n40c - raw) * 100 / ratio - 40) static int cpu_tmp; static unsigned int fuse; @@ -859,9 +859,10 @@ int clk_config(u32 ref, u32 freq, u32 clk_type) static inline int read_cpu_temperature(void) { - unsigned int reg, tmp, temperature, i; - unsigned int raw_25c, raw_hot, hot_temp, raw_n25c, ratio; + unsigned int reg, tmp, i; + unsigned int raw_25c, raw_hot, hot_temp, raw_n40c, ratio; unsigned int ccm_ccgr2; + int temperature; ccm_ccgr2 = readl(MXC_CCM_CCGR2); writel(readl(MXC_CCM_CCGR2) | (0x3 << MXC_CCM_CCGR2_CG6_OFFSET), @@ -880,7 +881,7 @@ static inline int read_cpu_temperature(void) hot_temp = fuse & 0xff; ratio = ((raw_25c - raw_hot) * 100) / (hot_temp - 25); - raw_n25c = raw_25c + ratio / 2; + raw_n40c = raw_25c + (13 * ratio) / 20; /* now we only using single measure, every time we measure the temperature, we will power on/down the anadig module*/ @@ -916,7 +917,7 @@ static inline int read_cpu_temperature(void) } tmp = tmp / 5; - if (tmp <= raw_n25c) + if (tmp <= raw_n40c) temperature = REG_VALUE_TO_CEL(ratio, tmp); else temperature = TEMPERATURE_MIN; |