Altera FPGAs in passive serial mode =================================== This binding defines the control interface to Altera FPGAs in passive serial mode. This is used to upload the firmware and to start the FPGA. Required properties: - ``compatible``: shall be ``"altr,fpga-passive-serial"`` or ``"altr,fpga-arria10-passive-serial"`` for Arria 10 - ``reg``: SPI chip select - ``nstat-gpios``: Specify GPIO for controlling the nstat pin - ``confd-gpios``: Specify GPIO for controlling the confd pin - ``nconfig-gpios``: Specify GPIO for controlling the nconfig pin Example: .. code-block:: none fpga@0 { compatible = "altr,fpga-passive-serial"; nstat-gpios = <&gpio4 18 0>; confd-gpios = <&gpio4 19 0>; nconfig-gpios = <&gpio4 20 0>; spi-max-frequency = <10000000>; reg = <0>; };