• Gustavo Pimentel's avatar
    ARC: [plat-hsdk]: Configure APB GPIO controller on ARC HSDK platform · ec58ba16
    Gustavo Pimentel authored
    In case of HSDK we have intermediate INTC in for of DW APB GPIO controller
    which is used as a de-bounce logic for interrupt wires that come from
    outside the board.
    
    We cannot use existing "irq-dw-apb-ictl" driver here because all input
    lines are routed to corresponding output lines but not muxed into one
    line (this is configured in RTL and we cannot change this in software).
    
    But even if we add such a feature to "irq-dw-apb-ictl" driver that won't
    benefit us as higher-level INTC (in case of HSDK it is IDU) anyways has
    per-input control so adding fully-controller intermediate INTC will only
    bring some overhead on interrupt processing but no other benefits.
    
    Thus we just do one-time configuration of DW APB GPIO controller and
    forget about it.
    
    Based on implementation available on arch/arc/plat-axs10x/axs10x.c file.
    Acked-by: default avatarAlexey Brodkin <abrodkin@synopsys.com>
    Signed-off-by: default avatarGustavo Pimentel <gustavo.pimentel@synopsys.com>
    Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
    ec58ba16