Mathias Kresin 23e3314cad lantiq: fix thermal sensors driver
Read the temperature including the decimale place from the CGU_GPHY1_CR
register.

Decrement the temperature read from the register by 38.0 degree celsius.
The temperature range of the sensor is -38.0 to +154 °C and the register
value 0 is equal to -38.0 °C. This fixes the report of unrealistic
temperatures as seen on all tested boards.

Give the SoC a few milliseconds to get the first temperature value. On
some rare occasions there is no temperature value in the register when
read the first time after activation. This leads to a reported
temperature of -38.0 °C on boot.

Only version 1.2 of the vr9 SoC has a temperature sensor. Add a check
to make sure the driver doesn't load on v1.1 vr9 SoCs.

Signed-off-by: Mathias Kresin <dev@kresin.me>
2016-10-19 19:55:06 +02:00
2015-07-14 09:57:45 +00:00
2016-10-15 11:36:53 +02:00
2016-10-19 19:55:06 +02:00
2007-02-26 01:05:09 +00:00
2016-03-24 22:40:13 +01:00
2016-03-20 17:29:15 +01:00
2016-05-12 03:29:36 +02:00
2016-08-01 18:11:21 +02:00

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