tree b909f3f73d89d1af8807036a3922a19aca41b514
parent 0f8fd43c42f2cc249943be76a4db0d058c16b6dc
author Joachim Foerster <joachim.foerster@missinglinkelectronics.com> 1319026721 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1319056146 -0700

usb/isp1760: Allow to optionally trigger low-level chip reset via GPIOLIB.

Properly triggering the reset wire is necessary with the ISP1761 used
on Terasic DE4 Altera-FPGA boards using a NIOS2 processor, for example.

This is an optional implementation for the OF binding only. The other
bindings just pass an invalid GPIO to the isp1760_register() routine.

Example, usage in DTS:
        gpios = <&pio_isp1761rst_0 0 1>;
to point to a GPIO controller from within the ISP1761 node: GPIO 0, active low.

Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>