[PATCH 4.14 21/21] ARM: dts: r8a7793: Correct critical CPU temperature

Greg Kroah-Hartman
2018-11-21T19:10:24Z

From: Chris Paterson <chris.paterson2@renesas.com>

commit 1dfc65cef481ac6af64380f26186d5cc585b46eb upstream.

The R-Car M2N hardware manual states 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.

Fixes: 57f9156bc620ac56 ("ARM: dts: r8a7793: enable to use thermal-zone")
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
arch/arm/boot/dts/r8a7793.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/r8a7793.dtsi
+++ b/arch/arm/boot/dts/r8a7793.dtsi
@@ -88,7 +88,7 @@

trips {
cpu-crit {
- temperature = <115000>;
+ temperature = <95000>;
hysteresis = <0>;
type = "critical";
};