| Message ID | 1513242521-11236-4-git-send-email-chris.paterson2@renesas.com |
|---|---|
| State | New |
| Headers | show |
| Series | Correct R-Car Gen2 critical CPU temperature | expand |
On Thu, Dec 14, 2017 at 10:08 AM, Chris Paterson <chris.paterson2@renesas.com> wrote: > The R-Car M2N hardware manual states that Tc = –40°C to +105°C. The M2-N > 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> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
diff --git a/arch/arm/boot/dts/r8a7793.dtsi b/arch/arm/boot/dts/r8a7793.dtsi index 61dd291d907da2f5..039b225175262e4b 100644 --- a/arch/arm/boot/dts/r8a7793.dtsi +++ b/arch/arm/boot/dts/r8a7793.dtsi @@ -89,7 +89,7 @@ trips { cpu-crit { - temperature = <115000>; + temperature = <95000>; hysteresis = <0>; type = "critical"; };
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> --- arch/arm/boot/dts/r8a7793.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)