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It seems that we will have more and more pin controllers that support PWM function on the (selected) pins. Due to it being a part of pin controller IP the idea is to have some code that will switch the mode and attach the corresponding driver, for example, via using it as a library. Meanwhile, put a corresponding item to the pin_config_param enumerator. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20210412140741.39946-3-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>