We do support ARM for DVB-C, DVB-T, possibly FM Radio. Analog TV depends on the actual ARM System since the bandwidth requirement is very high (170 Mbit) Some ARM Boards only make 32 Mbit.
For example we do support Texas Instruments Davinci DM644x ARM for DVB-C, DVB-T. The biggest problem with this system is the bad board support package and overall bad kernel support. We usually use to customize the driver implementation for such specific platforms.
Before trying to look into our products for ARM based systems try to attach a USB storage device, the datatransfer at least shall be 6 Megabyte per second (this is compareable with DVB-T, and SD DVB-C channels)