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From: "Ondřej Jirman" <megous@megous.com>
To: Chen-Yu Tsai <wens@csie.org>
Cc: linux-sunxi <linux-sunxi@googlegroups.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Maxime Ripard <mripard@kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@vger.kernel.org>,
	"moderated list:ARM/Allwinner sunXi SoC support" 
	<linux-arm-kernel@lists.infradead.org>,
	open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ARM: dts: sun8i-h3: Add thermal trip points/cooling maps
Date: Sun, 23 Feb 2020 11:16:47 +0100	[thread overview]
Message-ID: <20200223101647.wqhya3uqvgmsvj32@core.my.home> (raw)
In-Reply-To: <CAGb2v671FS+k07xWRbr1+3XWNKAsVx2AaWKOrDfyYpt2Lf-gtg@mail.gmail.com>

Hello,

On Sun, Feb 23, 2020 at 11:29:31AM +0800, Chen-Yu Tsai wrote:
> On Sun, Feb 23, 2020 at 5:42 AM Ondrej Jirman <megous@megous.com> wrote:
> >
> > This enables passive cooling by down-regulating CPU voltage
> > and frequency.
> 
> 
> Please state for the record how the trip points were derived. Were they from
> the BSP? Or the user manual?

I used a slightly lowered value from the BSP code. 110 seemed like a lot for
the critical temp. So I rounded it off to 100°C.

https://megous.com/git/linux/tree/drivers/thermal/sunxi-temperature.c?h=a83t-3.4-bsp-tbs-a711#n1139

H3 lists the same recommended ambient temperature range as A83T. -20 to 70 °C.

regards,
	o.

> ChenYu
> 
> > Signed-off-by: Ondrej Jirman <megous@megous.com>

      reply	other threads:[~2020-02-23 10:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-22 21:42 [PATCH] ARM: dts: sun8i-h3: Add thermal trip points/cooling maps Ondrej Jirman
2020-02-23  3:29 ` Chen-Yu Tsai
2020-02-23 10:16   ` Ondřej Jirman [this message]

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