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Support i.MX8MP thermal which has two probes and supports
temperature range from -40 to 125. Still uses default 1p HW
calibration at 25C and loads calibration parameters from fuse.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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On iMX8MM, the V flag in TRISTR register only reflect the state of SNSR
value, not the calibrated TEMP value. So checking this flag is not
reliable. Per IC suggestion, change to read the TEMP/AVG_TEMP directly
and check whether it in valid range 10-125C.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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When the temperature is out of sensor's range, the Valid bit won't be
set in TRITSR register. So the polling loop won't go out.
Change the codes to retry 10 times with 100ms interval for the Valid bit.
If the timeout, we give a warning for the invalid data.
Modifed from Ye's NXP patch
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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i.MX8MM TMU needs to load some registers from fuse, this is arch
dependent operation and may vary on different platforms. So add
a interface for arch level initialization.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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The analog sensors on iMX8MM are new, used for 14LPP process. So the
Temperature Sensor Monitoring Unit (TMU) has some change accordingly.
We use version 2 in TMU driver to represent the new TMU, so the one
driver can service for both i.MX8MQ/M.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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The driver is ported form Linux Kernel and support driver model.
Users need to provide the tmu node and sensors nodes in DTB.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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