[PATCH 0/3] Correct R-Car Gen2 critical CPU temperature

Chris Paterson chris.paterson2 at renesas.com
Thu Dec 14 01:08:38 PST 2017


The current R-Car Gen2 device trees define the CPU critical
temperature as 115°C.

The R-Car hardware manuals state that Tc = –40°C to +105°C. The
thermal sensor has an accuracy of ±5°C and there can be a temperature
difference of 1 or 2 degrees between Tjmax and the thermal sensor due
to the location of the latter.

This means that 95°C is a safer value to use.

This value should also apply to r8a7792 but thermal sensor support has
not been added yet.

Chris Paterson (3):
  ARM: dts: r8a7790: Correct critical CPU temperature
  ARM: dts: r8a7791: Correct critical CPU temperature
  ARM: dts: r8a7793: Correct critical CPU temperature

 arch/arm/boot/dts/r8a7790.dtsi | 2 +-
 arch/arm/boot/dts/r8a7791.dtsi | 2 +-
 arch/arm/boot/dts/r8a7793.dtsi | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

-- 
1.9.1




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