• Nicolas Ferre's avatar
    ARM: at91/pio: add new PIO3 features · 582d5fbd
    Nicolas Ferre authored
    
    
    This patch adds the support for new PIO controller found on some
    at91sam SOCs.
    - more peripheral multiplexing
    - more features to configure on a PIO (pull-down, Schmitt trigger, debouncer)
    - support for several IRQ triggering features (type and polarity)
    
    Support for those new features are retrieved from the device tree
    compatibility string.
    
    Debugfs at91_gpio file is updated to monitor configuration.
    
    Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
    582d5fbd