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authorNadav Haklai <nadavh@marvell.com>2015-04-15 19:08:08 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-06-06 08:21:06 -0700
commita80e880dc4cb44350bfdd27d5dc3b4bce9d8e784 (patch)
treec3187a583bbac3d3e9a2649d858e76e9e951762f
parent5368f933ea6ea8ba4edca8a557f67ca6deb0d67c (diff)
thermal: armada: Update Armada 380 thermal sensor coefficients
commit efa86858e1d8970411a140fa1e0c4dd18a8f2a89 upstream. Improve the Armada 380 thermal sensor accuracy by using updated formula. The updated formula is: Temperature[C degrees] = 0.4761 * tsen_vsen_out - 279.1 Signed-off-by: Nadav Haklai <nadavh@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/thermal/armada_thermal.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
index c2556cf5..01255fd 100644
--- a/drivers/thermal/armada_thermal.c
+++ b/drivers/thermal/armada_thermal.c
@@ -224,9 +224,9 @@ static const struct armada_thermal_data armada380_data = {
.is_valid_shift = 10,
.temp_shift = 0,
.temp_mask = 0x3ff,
- .coef_b = 1169498786UL,
- .coef_m = 2000000UL,
- .coef_div = 4289,
+ .coef_b = 2931108200UL,
+ .coef_m = 5000000UL,
+ .coef_div = 10502,
.inverted = true,
};