[PATCH 3.19.y-ckt 082/146] thermal: armada: Update Armada 380 thermal sensor coefficients

From: Kamal Mostafa
Date: Wed Jun 17 2015 - 19:25:43 EST


3.19.8-ckt2 -stable review patch. If anyone has any objections, please let me know.

------------------

From: Nadav Haklai <nadavh@xxxxxxxxxxx>

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@xxxxxxxxxxx>
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Eduardo Valentin <edubezval@xxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/thermal/armada_thermal.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
index c2556cf..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,
};

--
1.9.1

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