On 14.4.2016 15:45, Peng Fan wrote:
Introduce a new driver that supports driver model for pca953x. The pca953x chips are used as I2C I/O expanders. This driver is designed to support the following chips: " 4 bits: pca9536, pca9537 8 bits: max7310, max7315, pca6107, pca9534, pca9538, pca9554, pca9556, pca9557, pca9574, tca6408, xra1202 16 bits: max7312, max7313, pca9535, pca9539, pca9555, pca9575, tca6416 24 bits: tca6424 40 bits: pca9505, pca9698 " But for now this driver only supports max 24 bits and pca953x compatible chips. pca957x compatible chips are not supported now. These can be addressed when we need to add such support for the different chips. This driver has been tested on i.MX6 SoloX Sabreauto board with max7310 i2c expander using gpio command as following:
=>gpio status -a Bank gpio@30_: gpio@30_0: input: 1 [ ]
=> dm tree: i2c [ ] | | `-- i2c@021a8000 gpio [ ] | | |-- gpio@30 gpio [ ] | | `-- gpio@32
Signed-off-by: Peng Fan van.freenix@gmail.com Cc: Simon Glass sjg@chromium.org Cc: Masahiro Yamada yamada.masahiro@socionext.com Cc: Wenyou Yang wenyou.yang@atmel.com Cc: Daniel Schwierzeck daniel.schwierzeck@gmail.com Cc: Purna Chandra Mandal purna.mandal@microchip.com Cc: Thomas Chou thomas@wytron.com.tw Cc: Bhuvanchandra DV bhuvanchandra.dv@toradex.com Cc: Andrea Scian andrea.scian@dave.eu Cc: Michal Simek michal.simek@xilinx.com Cc: Stefano Babic sbabic@denx.de Cc: Fabio Estevam fabio.estevam@nxp.com Acked-by: Simon Glass sjg@chromium.org Tested-by: Michal Simek michal.simek@xilinx.com #on ZynqMP zcu102
When someone takes this there is a conflict in Kconfig but it is easy to resolved. All looks good.
Thanks, Michal