• Santosh Shilimkar's avatar
    Documentation: dt: soc: add Keystone Navigator DMA bindings · 8172296d
    Santosh Shilimkar authored
    The Keystone Navigator DMA driver sets up the dma channels and flows for
    the QMSS(Queue Manager SubSystem) who triggers the actual data movements
    across clients using destination queues. Every client modules like
    NETCP(Network Coprocessor), SRIO(Serial Rapid IO) and CRYPTO
    Engines has its own instance of packet dma hardware. QMSS has also
    an internal packet DMA module which is used as an infrastructure
    DMA with zero copy.
    
    Initially this driver was proposed as DMA engine driver but since the
    hardware is not typical DMA engine and hence doesn't comply with typical
    DMA engine driver needs, that approach was naked. Link to that
    discussion -
    	https://lkml.org/lkml/2014/3/18/340
    
    As aligned, now we pair the Navigator DMA with its companion Navigator
    QMSS subsystem driver.
    
    Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Cc: Kumar Gala <galak@codeaurora.org>
    Cc: Olof Johansson <olof@lixom.net>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Cc: Grant Likely <grant.likely@linaro.org>
    Cc: Rob Herring <robh+dt@kernel.org>
    Cc: Mark Rutland <mark.rutland@arm.com>
    Signed-off-by: default avatarSandeep Nair <sandeep_n@ti.com>
    Signed-off-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
    8172296d
keystone-navigator-dma.txt 3.61 KB