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From: Juergen Beisert <jbe@pengutronix.de>
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Date: Wed, 15 Oct 2008 16:42:04 +0200
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Subject: MPC5200: How to share GPIO and watchdog
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Hi list,

the timer0 on the MPC5200B contains one GPIO and a timer/watchdog.

If I'm using this node:

timer@600 {	/* General Purpose Timer */
    compatible =3D "fsl,mpc5200b-gpt","fsl,mpc5200-gpt";
    cell-index =3D <0>;
    reg =3D <0x600 0x10>;
    interrupts =3D <0x1 0x9 0x0>;
    interrupt-parent =3D <&mpc5200_pic>;
   fsl,has-wdt;
};

I will get watchdog support.

If I'm using this node:

timer@600 {	/* General Purpose Timer */
    compatible =3D "fsl,mpc5200b-gpt","fsl,mpc5200-gpt","fsl,mpc5200b-gpt-g=
pio","fsl,mpc5200-gpt-gpio";
    cell-index =3D <0>;
    reg =3D <0x600 0x10>;
    interrupts =3D <0x1 0x9 0x0>;
    interrupt-parent =3D <&mpc5200_pic>;
    gpio-controller;
    #gpio-cells =3D <2>;
    fsl,has-wdt;
};

I will get GPIO support, but no longer watchdog support (watchdogs probe
function will never be called).

Is there a way to get both features supported?

Regards,
Juergen

=2D-=20
Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de
=A0Pengutronix - Linux Solutions for Science and Industry
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