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Manual Pages  — BYTGPIO


bytgpio – Intel Bay Trail SoC GPIO controller



device gpio device bytgpio


The bytgpio is a driver for GPIO controller that can be found in Intel's Bay Trail SoC family.

Bay Trail SoC has three banks of GPIO pins exposed to userland as /dev/gpiocN, where N is 0, 1, and 2. Pins in each bank are pre-named to match names on boards schematics: GPIO_S0_SCnn, GPIO_S0_NCnn, and GPIO_S5_nn.


gpio(3), gpio(4), gpioctl(8)


The bytgpio manual page first appeared in FreeBSD 11.1 .


This driver and man page was written by Oleksandr Tymoshenko <Mt gonzo@FreeBSD.org>.

BYTGPIO (4) May 9, 2017

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Please direct any comments about this manual page service to Ben Bullock.

"I liken starting one's computing career with Unix, say as an undergraduate, to being born in East Africa. It is intolerably hot, your body is covered with lice and flies, you are malnourished and you suffer from numerous curable diseases. But, as far as young East Africans can tell, this is simply the natural condition and they live within it. By the time they find out differently, it is too late. They already think that the writing of shell scripts is a natural act."
— Ken Pier, Xerox PARC