• Christophe Leroy's avatar
    powerpc/8xx: Adding support of IRQ in MPC8xx GPIO · 726bd223
    Christophe Leroy authored
    This patch allows the use of IRQ to notify the change of GPIO status
    on MPC8xx CPM IO ports. This then allows to associate IRQs to GPIOs
    in the Device Tree.
    
    Ex:
    	CPM1_PIO_C: gpio-controller@960 {
    		#gpio-cells = <2>;
    		compatible = "fsl,cpm1-pario-bank-c";
    		reg = <0x960 0x10>;
    		fsl,cpm1-gpio-irq-mask = <0x0fff>;
    		interrupts = <1 2 6 9 10 11 14 15 23 24 26 31>;
    		interrupt-parent = <&CPM_PIC>;
    		gpio-controller;
    	};
    
    The property 'fsl,cpm1-gpio-irq-mask' defines which of the 16 GPIOs
    have the associated interrupts defined in the 'interrupts' property.
    Signed-off-by: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
    Signed-off-by: default avatarScott Wood <oss@buserror.net>
    726bd223
gpio.txt 2.04 KB