request for 4.14-stable: fcab5651fae4 ("ARM: dts: r8a7790: Correct critical CPU temperature")

request for 4.14-stable: fcab5651fae4 ("ARM: dts: r8a7790: Correct critical CPU temperature")

[Sudip Mukherjee]

[-- Attachment #1: Type: text/plain, Size: 136 bytes --]

Hi Greg,

This was not marked for stable but seems it should be in stable.
Please apply to your queue of 4.14-stable.

--
Regards
Sudip

[-- Attachment #2: 0001-ARM-dts-r8a7790-Correct-critical-CPU-temperature.patch --]
[-- Type: text/x-diff, Size: 1442 bytes --]

>From 18bdaf4379ec15a5f964cb059da7b86f94ffe341 Mon Sep 17 00:00:00 2001
From: Chris Paterson <chris.paterson2@renesas.com>
Date: Thu, 14 Dec 2017 09:08:39 +0000
Subject: [PATCH] ARM: dts: r8a7790: Correct critical CPU temperature
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit fcab5651fae4258a993170b7aaf443adbd3d4d84 upstream

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>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.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 16358bf8d1db..97e8b9b0b750 100644
--- a/arch/arm/boot/dts/r8a7790.dtsi
+++ b/arch/arm/boot/dts/r8a7790.dtsi
@@ -153,7 +153,7 @@
 
 			trips {
 				cpu-crit {
-					temperature	= <115000>;
+					temperature	= <95000>;
 					hysteresis	= <0>;
 					type		= "critical";
 				};
-- 
2.11.0

Re: request for 4.14-stable: fcab5651fae4 ("ARM: dts: r8a7790: Correct critical CPU temperature")

[Sasha Levin]

On Tue, Oct 23, 2018 at 10:49:00AM +0100, Sudip Mukherjee wrote:
>Hi Greg,
>
>This was not marked for stable but seems it should be in stable.
>Please apply to your queue of 4.14-stable.

Queued for 4.14.

--
Thanks,
Sasha

RE: request for 4.14-stable: fcab5651fae4 ("ARM: dts: r8a7790: Correct critical CPU temperature")

[Chris Paterson]

Hello all,

Apologies for the slow reply.

If you are taking this patch into v4.14, you should probably also take:

e4fdf59bcce3b490 ("ARM: dts: r8a7791: Correct critical CPU temperature")
1dfc65cef481ac6a ("ARM: dts: r8a7793: Correct critical CPU temperature")

Sorry for not marking them for stable originally.

Kind regards, Chris

> -----Original Message-----
> From: stable-owner@vger.kernel.org <stable-owner@vger.kernel.org> On
> Behalf Of Sasha Levin
> Sent: 31 October 2018 14:42
> To: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>;
> stable@vger.kernel.org; Chris Paterson <Chris.Paterson2@renesas.com>;
> Geert Uytterhoeven <geert+renesas@glider.be>; Simon Horman
> <horms+renesas@verge.net.au>
> Subject: Re: request for 4.14-stable: fcab5651fae4 ("ARM: dts: r8a7790:
> Correct critical CPU temperature")
> 
> On Tue, Oct 23, 2018 at 10:49:00AM +0100, Sudip Mukherjee wrote:
> >Hi Greg,
> >
> >This was not marked for stable but seems it should be in stable.
> >Please apply to your queue of 4.14-stable.
> 
> Queued for 4.14.
> 
> --
> Thanks,
> Sasha

Re: request for 4.14-stable: fcab5651fae4 ("ARM: dts: r8a7790: Correct critical CPU temperature")

[Greg Kroah-Hartman]

On Mon, Nov 05, 2018 at 11:00:49AM +0000, Chris Paterson wrote:
> Hello all,
> 
> Apologies for the slow reply.
> 
> If you are taking this patch into v4.14, you should probably also take:
> 
> e4fdf59bcce3b490 ("ARM: dts: r8a7791: Correct critical CPU temperature")
> 1dfc65cef481ac6a ("ARM: dts: r8a7793: Correct critical CPU temperature")
> 
> Sorry for not marking them for stable originally.

Now queued up, thanks.

greg k-h