diff options
| -rw-r--r-- | ft2232_spi.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/ft2232_spi.c b/ft2232_spi.c index 0962f1c10..df156d6fa 100644 --- a/ft2232_spi.c +++ b/ft2232_spi.c @@ -89,8 +89,11 @@ static const struct dev_entry devs_ft2232spi[] = { * "set data bits low byte" MPSSE command that sets the initial * state and the direction of the I/O pins. `cs_bits` pins default * to high and will be toggled during SPI transactions. All other - * output pins will be kept low all the time. On exit, all pins - * will be reconfigured as inputs. + * output pins will be kept low all the time. For some programmers, + * some reserved GPIOL* pins are used as outputs. Free GPIOL* pins + * are configured as inputs, while it's possible to use one of them + * as additional CS# signal through the parameter `csgpiol`. On exit, + * all pins will be reconfigured as inputs. * * The pin offsets are as follows: * TCK/SK is bit 0. |