linux-kernel - Re: N900 modem support in 3.18-rc1

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Date:	Wed, 5 Nov 2014 23:03:59 +0100
From:	Pavel Machek <pavel@....cz>
To:	Pali Rohár <pali.rohar@...il.com>
Cc:	Sebastian Reichel <sre@...nel.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
	aaro.koskinen@....fi, freemangordon@....bg
Subject: Re: N900 modem support in 3.18-rc1

Hi!

> Maybe you need to enable modem?
> 
> This is n900 init sequence from script: nokia-n900-configs.sh

>From the dts, it looks like this should somehow work without this.

I can try but.. is it safe? I'm using DT-based config, and interrupt
numbers definitely changed. If GPIO numbers changed, it will not be
funny.

Thanks,
									Pavel

>     # set up the GPIO's for N900 modem:
>     echo 70 >/sys/class/gpio/export
>     echo low >/sys/class/gpio/gpio70/direction
>     echo 0 >/sys/class/gpio/gpio70/value
>     echo 73 >/sys/class/gpio/export
>     echo high >/sys/class/gpio/gpio73/direction
>     echo 0 >/sys/class/gpio/gpio73/value
>     echo 74 >/sys/class/gpio/export
>     echo low >/sys/class/gpio/gpio74/direction
>     echo 75 >/sys/class/gpio/export
>     echo low >/sys/class/gpio/gpio75/direction
>     echo 157 >/sys/class/gpio/export
>     echo low >/sys/class/gpio/gpio157/direction
>     echo 0 >/sys/class/gpio/gpio157/value
>     # create symlinks for ofono N900 plugin
>     mkdir -p /dev/cmt
>     ln -nsf /sys/class/gpio/gpio70 /dev/cmt/cmt_apeslpx
>     ln -nsf /sys/class/gpio/gpio74 /dev/cmt/cmt_en
>     ln -nsf /sys/class/gpio/gpio73 /dev/cmt/cmt_rst_rq
>     ln -nsf /sys/class/gpio/gpio75 /dev/cmt/cmt_rst
>     ln -nsf /sys/class/gpio/gpio157 /dev/cmt/cmt_bsi
> 



-- 
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