The driver supports very simple GPIO controllers, that is, when a
controller provides just a 'data' register. Such controllers may
be found in various BCSRs (Board's FPGAs used to control board's
switches, LEDs, chip-selects, Ethernet/USB PHY power, etc).
So far we support only 1-byte GPIO banks.
The driver supports very simple GPIO controllers, that is, when a
controller provides just a 'data' register. Such controllers may
be found in various BCSRs (Board's FPGAs used to control board's
switches, LEDs, chip-selects, Ethernet/USB PHY power, etc).
So far we support only 1-byte GPIO banks.
