Hi,
This adds driver for pcf8575 in uboot. The driver supports basic read and write operations on pcf gpio pins.
The first patch adds the driver, second patch and third patch switches cpsw to use slave0 on DRA72 EVM.
Tested pcf driver on DRA72 EVM by probing pcf lines and cpsw by runnning tftp.
Vignesh R (3): gpio: pcf8575: Add pcf8575 driver to control gpio lines ARM: dra7xx_evm: Enable pcf driver ARM: DRA7-EVM: switch cpsw to use slave0
board/ti/dra7xx/evm.c | 13 ++- drivers/gpio/Makefile | 1 + drivers/gpio/pcf8575.c | 248 +++++++++++++++++++++++++++++++++++++++++++ include/configs/dra7xx_evm.h | 4 + include/pcf8575.h | 25 +++++ 5 files changed, 289 insertions(+), 2 deletions(-) create mode 100644 drivers/gpio/pcf8575.c create mode 100644 include/pcf8575.h