On 18/04/2017 14:41, Peng Fan wrote:
From IC guys: " After a thorough accuracy study of the Temp sense circuit, we found that with our current equation, an average part can read 7 degrees lower than a known forced temperature. We also found out that the standard variance was around 2C; which is the tightest distribution that we could create. We need to change the temp sense equation to center the average part around the target temperature. "
New equation: Tmeas = (Nmeas - n1) / slope + t1 + offset n1= fused room count t1= 25 offset=3.580661 slope= 0.4148468 – 0.0015423*n1
According the new equation, update the thermal driver. c1 and c2 changed to u64 type and update comments.
Signed-off-by: Peng Fan peng.fan@nxp.com Cc: Stefano Babic sbabic@denx.de
Applied to u-boot-imx, thanks !
Best regards, Stefano Babic