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| author | Peng Fan <Peng.Fan@freescale.com> | 2015-05-21 09:09:58 +0800 |
|---|---|---|
| committer | Ye Li <ye.li@nxp.com> | 2017-03-14 21:27:09 +0800 |
| commit | 40d2612bdfdc805d8f924854329de8adb4f38902 (patch) | |
| tree | a476fa775a3d74b3ef43bb0ff4b0f1f969447e8d /drivers/thermal/imx_thermal.c | |
| parent | 52a95d753328ce4df03ca7acae3295ceab53c66b (diff) | |
| download | u-boot-imx-40d2612bdfdc805d8f924854329de8adb4f38902.zip u-boot-imx-40d2612bdfdc805d8f924854329de8adb4f38902.tar.gz u-boot-imx-40d2612bdfdc805d8f924854329de8adb4f38902.tar.bz2 | |
MLK-11035 imx: mx6 update thermal slope factors
From temp sensor guys:
"
I confirmed the math with him(had do the accuracy study) today.
The new, final equation is:
Tmeas = (Nmeas - n1) / slope + t1 + offset
n1= fused room count
t1= 25
offset=3.580661
slope= 0.4148468 – 0.0015423*n1
"
87723f903454aaf17336e0fe9098ea7911c19f3c update the thermal with not
accurate slope parameters. This patch fix it.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
(cherry picked from commit 0d4904f5929cecd66f0b60cf8ebdcb0e6a2f733e)
Diffstat (limited to 'drivers/thermal/imx_thermal.c')
| -rw-r--r-- | drivers/thermal/imx_thermal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 741a3f7..123248d 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -22,8 +22,8 @@ /* 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 16549 -#define FACTOR2 4445388 +#define FACTOR1 15423 +#define FACTOR2 4148468 #define OFFSET 3580661 #define MEASURE_FREQ 327 #define TEMPERATURE_MIN -40 |