On Thu, Jun 13, 2024 at 10:26 AM Hui Wang <hui.wang@xxxxxxxxxxxxx> wrote: > Some boards connect a GPIO to the reset pin, and the reset pin needs > to be setup correctly before accessing the chip. set up > Add a function to handle the chip reset. If the reset-gpios is defined > in the DT, do hardware reset through this GPIO, othwerwise do software otherwise > reset as before. ... > + /* The minimum reset pulse width is 3 us. */ > + usleep_range(5, 10); Simply use fsleep() and it will take care of the sane API to be called. > + gpiod_set_value_cansleep(reset_gpio, 0); /* Deassert GPIO */ -- With Best Regards, Andy Shevchenko