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authorAnson Huang <b20788@freescale.com>2013-03-29 09:44:41 +0800
committerJason Liu <r64343@freescale.com>2013-04-07 17:32:33 +0800
commit98c4841e14b58526e11a314e890f1290352b18fd (patch)
treeda00aa63a687d7c92301902d2b511ea6db0cf482
parente4e9fc62a5db6dee2051d439174673f9157ba5e2 (diff)
ENGR00256543 mx6: Update equation for thermal sensor on i.MX6DLrel_imx_3.0.35_3.0.4
Use universal equation and 25C's calibration data to get thermal sensor's ratio on i.MX6DL. Signed-off-by: Anson Huang <b20788@freescale.com>
-rw-r--r--drivers/mxc/thermal/thermal.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mxc/thermal/thermal.c b/drivers/mxc/thermal/thermal.c
index 21ff18f..226be6a 100644
--- a/drivers/mxc/thermal/thermal.c
+++ b/drivers/mxc/thermal/thermal.c
@@ -861,13 +861,13 @@ static int anatop_thermal_counting_ratio(unsigned int fuse_data)
raw_hot = (fuse_data & 0xfff00) >> 8;
hot_temp = fuse_data & 0xff;
- if (!calibration_valid && cpu_is_mx6q())
+ if (!calibration_valid && !cpu_is_mx6sl())
/*
* The universal equation for thermal sensor
* is slope = 0.4297157 - (0.0015976 * 25C fuse),
* here we convert them to integer to make them
* easy for counting, FACTOR1 is 15976,
- * FACTORs is 4297157. Our ratio = -100 * slope.
+ * FACTOR2 is 4297157. Our ratio = -100 * slope.
*/
ratio = ((FACTOR1 * raw_25c - FACTOR2) + 50000) / 100000;
else