mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 06:06:15 +09:00
f3e74d0a9f
This patch adds support for using some GPIOs that are connected to the I2C bus to force the bus lines state and perform some bus deblocking sequences. The KM common deblocking algorithm from board/keymile/common/common.c is used. The GPIO lines used for deblocking the I2C bus are some external GPIOs provided by the QRIO CPLD: - SCL = GPIOA_20 - SDA = GPIOA_21 The QRIO GPIOs act in an open-drain-like manner, for 0 the line is driven low and for 1 the GPIO is set as input and the line gets pulled-up. Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com> Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> Reviewed-by: York Sun <yorksun@freescale.com> |
||
|---|---|---|
| .. | ||
| keymile-common.h | ||
| km_arm.h | ||
| km-powerpc.h | ||
| km83xx-common.h | ||
| km8309-common.h | ||
| km8321-common.h | ||
| kmp204x-common.h | ||