• Ben Peddell's avatar
    ARM: Kirkwood: Add support for many Synology NAS devices · 2d0a7add
    Ben Peddell authored
    Add device tree fragments and files to support many of the kirkwood
    based Synology NAS devices. This is a modification of
    Andrew Lunn's <andrew@lunn.ch> translation of the board setup file
    maintained by Ben Peddell <klightspeed@killerwolves.net>
    
    The Ricoh RS5C372 RTC was used in all 2009 units and some 2010 units.
    All other Synology Kirkwood-based DiskStations and RackStations use
    the Seiko S35390A RTC.
    
    Most of the 1-bay and 2-bay units use the GPIOs that are multiplexed
    with the built-in SATA interface activity/presence pins on mpp 20-23,
    while the 4-bay units use ge01 and a PCIe SATA controller, and put the
    software controlled HDD leds on mpp 36-43.
    
    Most of the 6281 units with HDD power controls use mpp 29 and 31, while
    most of the 6282 units with HDD power controls use mpp 30, 34, 44 and 45
    and provide a model ID on mpp 28, 29, 46 and 47.  Pre-2012 units and
    most 4-bay units didn't have a separate power control for HDD1.  These
    power controls are presumably to limit startup current from the 12V
    brick power supply.
    
    Instead of using separate dtsi files in a synology directory, this
    patch uses a single dtsi file containing all of the modules for
    these boards, with all of the modules not common to all boards
    disabled.  The board dts files then enable the appropriate modules for
    their boards.
    Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
    Signed-off-by: default avatarBen Peddell <klightspeed@killerwolves.net>
    Tested-by: Ben Peddell <klightspeed@killerwolves.net> (ds211j)
    Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
    2d0a7add
kirkwood-synology.dtsi 18.3 KB