From: chris.paterson2@renesas.com (Chris Paterson)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] ARM: dts: r8a7790: Correct critical CPU temperature
Date: Thu, 14 Dec 2017 09:08:39 +0000 [thread overview]
Message-ID: <1513242521-11236-2-git-send-email-chris.paterson2@renesas.com> (raw)
In-Reply-To: <1513242521-11236-1-git-send-email-chris.paterson2@renesas.com>
The R-Car H2 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: a8b805f3606f7af7 ("ARM: dts: r8a7790: enable to use thermal-zone")
Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
---
arch/arm/boot/dts/r8a7790.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi
index 450bfc0e9796a557..ed9a68538a554001 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -168,7 +168,7 @@
trips {
cpu-crit {
- temperature = <115000>;
+ temperature = <95000>;
hysteresis = <0>;
type = "critical";
};
--
1.9.1
next prev parent reply other threads:[~2017-12-14 9:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-14 9:08 [PATCH 0/3] Correct R-Car Gen2 critical CPU temperature Chris Paterson
2017-12-14 9:08 ` Chris Paterson [this message]
2017-12-14 10:23 ` [PATCH 1/3] ARM: dts: r8a7790: Correct " Geert Uytterhoeven
2017-12-14 9:08 ` [PATCH 2/3] ARM: dts: r8a7791: " Chris Paterson
2017-12-14 10:24 ` Geert Uytterhoeven
2017-12-14 9:08 ` [PATCH 3/3] ARM: dts: r8a7793: " Chris Paterson
2017-12-14 10:25 ` Geert Uytterhoeven
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