commit ee41469d4d2b0f6bb94f2e79c503345572f46daf
author Nadav Haklai <nadavh@marvell.com> Thu Jul 09 11:31:25 2015 +0300
committer Greg Poist <poist@google.com> Thu Mar 24 11:59:54 2016 -0700
tree e8b1a6d3ca5bab758fca0446254c98f42a5f6622
parent 648cc79de39cef10db60c00ad4be55d294e2718b

fix: thermal: a38x: Update thermal sensor coefficients

- Improve the Armada 38x thermal sensor accuracy by using updated formula.
  The updated formula is:
  Temperature[C degrees] = 0.4761 * tsen_vsen_out - 279.1

Change-Id: Idbe260eec9ff6d6814545e0d65fb1e0af2f74ab9
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/21155
Tested-by: Star_Automation <star@marvell.com>
Reviewed-by: Omri Itach <omrii@marvell.com>
Reviewed-by: Hanna Hawa <hannah@marvell.com>

board/mv_ebu/a38x/armada_38x_family/ctrlEnv/mvCtrlEnvLib.c

diff --git a/board/mv_ebu/a38x/armada_38x_family/ctrlEnv/mvCtrlEnvLib.c b/board/mv_ebu/a38x/armada_38x_family/ctrlEnv/mvCtrlEnvLib.c
index 5e4c9de..8be1c58 100644
--- a/board/mv_ebu/a38x/armada_38x_family/ctrlEnv/mvCtrlEnvLib.c
+++ b/board/mv_ebu/a38x/armada_38x_family/ctrlEnv/mvCtrlEnvLib.c
@@ -2220,8 +2220,9 @@
 	reg = MV_REG_READ(TSEN_STATUS_REG);
 	reg = (reg & TSEN_STATUS_TEMP_OUT_MASK) >> TSEN_STATUS_TEMP_OUT_OFFSET;
 
-	return ((((10000 * reg) / 21445) * 1000) - 272674) / 1000;
+	return ((4761 * reg) - 2791000) / 10000;
 }
+
 /*******************************************************************************
 * mvCtrlNandClkSet
 *