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From: maxime.ripard@free-electrons.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to a level all boards can supply
Date: Mon, 3 Aug 2015 11:13:00 +0200	[thread overview]
Message-ID: <20150803091300.GY2564@lukather> (raw)
In-Reply-To: <1438543386-7253-1-git-send-email-public_timo.s@silentcreek.de>

On Sun, Aug 02, 2015 at 09:23:06PM +0200, Timo Sigurdsson wrote:
> sun7i-a20.dtsi contains an cpufreq operating point at 0.9 volts. Most A20 boards
> (or all?), however, do not allow the voltage to go below 1.0V. Thus, raise the
> voltage for the lowest operating point to 1.0V so all boards can actually use
> it.

This is not a property of a board, but is the actual limit documented
by Allwinner for the A20. Some individual SoCs might have wider
tolerances, but that's not a property of a board, it's really a
property of a single SoC, and we cannot make any assumption on the
board.

(and please make sure to run checkpatch before sending your patches)

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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  parent reply	other threads:[~2015-08-03  9:13 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-02 19:23 [PATCH] ARM: dts: sunxi: Raise minimum CPU voltage for sun7i-a20 to a level all boards can supply Timo Sigurdsson
2015-08-02 23:35 ` [linux-sunxi] " Julian Calaby
2015-08-03  2:37   ` Chen-Yu Tsai
2015-08-03  4:22     ` Julian Calaby
2015-08-03  4:26       ` Chen-Yu Tsai
2015-08-03  9:03       ` Timo Sigurdsson
2015-08-03  9:34         ` Maxime Ripard
2015-08-03  9:36           ` Julian Calaby
2015-08-04  8:51           ` Timo Sigurdsson
2015-08-03  9:28       ` Maxime Ripard
2015-08-03  8:37   ` Timo Sigurdsson
2015-08-03  9:23     ` Maxime Ripard
2015-08-03  9:16   ` Maxime Ripard
2015-08-03  9:13 ` Maxime Ripard [this message]
2015-08-04  8:38   ` Timo Sigurdsson

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