linux-kernel - Re: [PATCH v4 11/26] ARM: pxa: magician: Optimize EGPIO initial values

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Message-ID: <1443875705.4186.24.camel@gmail.com>
Date:	Sat, 03 Oct 2015 14:35:05 +0200
From:	Philipp Zabel <philipp.zabel@...il.com>
To:	Petr Cvek <petr.cvek@....cz>, robert.jarzmik@...e.fr,
	daniel@...que.org, haojian.zhuang@...il.com, linux@....linux.org.uk
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 11/26] ARM: pxa: magician: Optimize EGPIO initial
 values

Am Montag, den 28.09.2015, 23:32 +0200 schrieb Petr Cvek:
> This patch optimizes initial values of the EGPIO chip driver.
> 
> GSM and sound should be powered off during boot. A weak accumulator
> and
> a powered GSM sometimes cause a system reboot. A charging current
> should be
> as high as possible during boot.

Wouldn't that violate USB spec if we boot the magician while plugged
into an unpowered USB host?

regards
Philipp
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