[ARM] orion5x: TS-78xx support for 'hotplug' of FPGA devices

the FPGA on the TS-7800 provides access to a number of devices
and so we have to be careful when reprogramming it.  As we
are effectively turning a bus off/on we have to inform the
kernel that it should stop using anything provided by the
FPGA (currently only the RTC however the NAND, LCD, etc is
to come) before it's reprogrammed.

Once reprogramed, we can tell the kernel to (re)enable things
by checking the FPGA ID against a lookup table for what a
particular FPGA bitstream can provide.

Signed-off-by: Alexander Clouter <alex@digriz.org.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index f59a8d0e0824..2c7035d8dcbf 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -71,6 +71,7 @@ config MACH_WRT350N_V2
 
 config MACH_TS78XX
         bool "Technologic Systems TS-78xx"
+        select PM
         help
           Say 'Y' here if you want your kernel to support the
           Technologic Systems TS-78xx platform.