From: Stefan Strobl <nst@gersys.de>
To: ppc-dev <linuxppc-dev@ozlabs.org>
Subject: MPC52xx simple GPIO support
Date: Tue, 02 Jun 2009 19:02:25 +0200 [thread overview]
Message-ID: <4A255B21.8040002@gersys.de> (raw)
Hi
I still don't quite understand how to use the Flattened Device Tree /
Open Firmware. I see there's a driver (mpc52xx_gpt.c) that supports to
use the Pins on the GPT as simple GPIOs. I activated it by adding these
lines to my dts file:
gpt2: timer@620 {
compatible = "fsl,mpc5200b-gpt-gpio","fsl,mpc5200-gpt-gpio";
reg = <0x620 0x10>;
interrupts = <1 11 0>;
gpio-controller;
#gpio-cells = <2>;
};
I can see the appropriate entries in sysfs
(/sys/devices/f0000000.soc5200/f0000620.timer), but how can I actually
use these GPIO's now?
Many thanks
Stefan.
next reply other threads:[~2009-06-02 17:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-02 17:02 Stefan Strobl [this message]
2009-06-02 17:15 ` MPC52xx simple GPIO support Anton Vorontsov
2009-06-03 12:42 ` Stefan Strobl
2009-06-03 13:22 ` PWM class? (was: Re: MPC52xx simple GPIO support) Anton Vorontsov
2009-06-03 15:38 ` Jon Smirl
2009-06-03 15:54 ` Trilok Soni
2009-06-11 22:00 ` Grant Likely
2009-06-12 0:37 ` Anton Vorontsov
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