Re: [PATCH v4 2/2] serial: sc16is7xx: hardware reset chip if reset-gpios is defined in DT

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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





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