• Michal Simek's avatar
    gpio: zynq: Setup chip->base based on alias ID · 060f3ebf
    Michal Simek authored
    In past Xilinx gpio-zynq driver was setting up gpio chip->base as 0
    which was chagned to autodetection when driver was upstreamed. Older
    systems, which were using this old version, setup SW stack which expects
    zynq gpio base as 0 and right now there is no way how to set this up.
    
    The patch is adding an option to setup chip->base based on aliases which
    is something what some other drivers are doing too.
    It means when gpio0 alias is setup then chip->base is 0. When gpio alias
    is not setup gpiochip_find_base() set it up properly which is current
    behavior.
    Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    060f3ebf
gpio-zynq.c 28.2 KB