25 lines
698 B
Plaintext
25 lines
698 B
Plaintext
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"
|
|
- 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:
|
|
|
|
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>;
|
|
};
|