On Tue, Aug 02, 2016 at 10:14:24AM +0530, Vignesh R wrote:
TI's PCF8575 is a 16-bit I2C GPIO expander.The device features a 16-bit quasi-bidirectional I/O ports. Each quasi-bidirectional I/O can be used as an input or output without the use of a data-direction control signal. The I/Os should be high before being used as inputs. Read the device documentation for more details[1].
This driver is based on pcf857x driver available in Linux v4.7 kernel. It supports basic reading and writing of gpio pins.
[1] http://www.ti.com/lit/ds/symlink/pcf8575.pdf
Signed-off-by: Vignesh R vigneshr@ti.com Reviewed-by: Tom Rini trini@konsulko.com Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Mugunthan V N mugunthanvnm@ti.com
Applied to u-boot/master, thanks!