linux-kernel - RE: [PATCH v2 3/7] arm64: dts: freescale: imx95: update a55 thermal trip points

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID:
 <PAXPR04MB8459114481B327DE1065ECF5889E2@PAXPR04MB8459.eurprd04.prod.outlook.com>
Date: Fri, 6 Sep 2024 08:19:53 +0000
From: Peng Fan <peng.fan@....com>
To: Alexander Stein <alexander.stein@...tq-group.com>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
	<s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>
CC: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "Peng Fan (OSS)" <peng.fan@....nxp.com>
Subject: RE: [PATCH v2 3/7] arm64: dts: freescale: imx95: update a55 thermal
 trip points

> Subject: Re: [PATCH v2 3/7] arm64: dts: freescale: imx95: update a55
> thermal trip points
> 
> Am Dienstag, 3. September 2024, 09:17:48 CEST schrieb Peng Fan
> (OSS):
> > From: Peng Fan <peng.fan@....com>
> >
> > Update the thermal trip points for automotive and extended
> industrial
> > temperature qualification processors.
> >
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx95.dtsi | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx95.dtsi
> > b/arch/arm64/boot/dts/freescale/imx95.dtsi
> > index 314a45e82c38..2cba7a889030 100644
> > --- a/arch/arm64/boot/dts/freescale/imx95.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx95.dtsi
> > @@ -347,13 +347,13 @@ a55-thermal {
> >
> >  			trips {
> >  				cpu_alert0: trip0 {
> > -					temperature = <85000>;
> > +					temperature = <105000>;
> >  					hysteresis = <2000>;
> >  					type = "passive";
> >  				};
> >
> >  				cpu_crit0: trip1 {
> > -					temperature = <95000>;
> > +					temperature = <125000>;
> 
> What about commercial and industrial temperature ranges? Can you
> detected this at runtime? Is the bootloader supposed to correct these
> settings?

Bootloader is supposed to update or people could overwrite in their
board device tree per which chip grade is being used.

It would be better if there is runtime update by kernel, but no as
of now. We may use nvmem to do runtime in future, but need check.

Regards,
Peng.

> 
> Best regards,
> Alexander
> 
> >  					hysteresis = <2000>;
> >  					type = "critical";
> >  				};
> >
> >
> 
> 
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld,
> Germany Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2F
> www.tq-
> group.com%2F&data=05%7C02%7Cpeng.fan%40nxp.com%7C1787566
> 643e742d9965508dccda5ad2d%7C686ea1d3bc2b4c6fa92cd99c5c301
> 635%7C0%7C0%7C638611358666637887%7CUnknown%7CTWFpbGZ
> sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJX
> VCI6Mn0%3D%7C0%7C%7C%7C&sdata=vL3HTTjWm6F6dRQD4Oek0nj
> UiY%2FNnkqDv5z3k846EdY%3D&reserved=0
>