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Certain GPIO devices have the capability to switch their GPIOs into open-drain mode, that is, instead of actively driving the output (Push-pull output), the pin is connected to the collector (for a NPN transistor) or the drain (for a MOSFET) of a transistor, respectively. The pin then either forms an open circuit or a connection to ground, depending on the state of the transistor. This patch adds functions to the GPIO uclass to switch GPIOs to open-drain mode on devices that support it. Signed-off-by: Mario Six <mario.six@gdsys.cc> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: York Sun <york.sun@nxp.com> |
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| .. | ||
| bitops | ||
| atomic-long.h | ||
| bitsperlong.h | ||
| errno.h | ||
| global_data.h | ||
| gpio.h | ||
| ioctl.h | ||
| sections.h | ||
| signal.h | ||
| u-boot.h | ||
| unaligned.h | ||