mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 13:43:55 +08:00
fd015480c2
The EP93xx C and D GPIO ports are multiplexed with the Keypad Interface peripheral. At power-up they default into non-GPIO mode with the Key Matrix controller enabled so these ports are unusable for GPIO. Note that the Keypad Interface peripheral is only available in the EP9307, EP9312, and EP9315 processor variants. The keypad support will clear the DeviceConfig bits appropriately to enable the Keypad Interface when the driver is loaded. And, when the driver is unloaded it will set the bits to return the ports to GPIO mode. To make these ports available for GPIO after power-up on all EP93xx processor variants, set the KEYS and GONK bits in the DeviceConfig register. Similarly, the E, G, and H ports are multiplexed with the IDE Interface peripheral. At power-up these also default into non-GPIO mode. Note that the IDE peripheral is only available in the EP9312 and EP9315 processor variants. Since an IDE driver is not even available in mainline, set the EONIDE, GONIDE, and HONIDE bits in the DeviceConfig register so that these ports will be available for GPIO use after power-up. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
||
|---|---|---|
| .. | ||
| include/mach | ||
| adssphere.c | ||
| clock.c | ||
| core.c | ||
| dma-m2p.c | ||
| edb93xx.c | ||
| gesbc9312.c | ||
| gpio.c | ||
| Kconfig | ||
| Makefile | ||
| Makefile.boot | ||
| micro9.c | ||
| simone.c | ||
| snappercl15.c | ||
| ts72xx.c | ||