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

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Date:	Wed, 5 Nov 2014 22:06:04 +0100
From:	Pali Rohár <pali.rohar@...il.com>
To:	Pavel Machek <pavel@....cz>
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

Maybe you need to enable modem?

This is n900 init sequence from script: nokia-n900-configs.sh

    # 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

-- 
Pali Rohár
pali.rohar@...il.com

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