• Michael Tretter's avatar
    dt-bindings: soc: xlnx: extract xlnx, vcu-settings to separate binding · a3857f89
    Michael Tretter authored
    The xlnx,vcu binding comprises two adjacent register banks:
    
    The first register bank ("vcu_slcr") contains registers for setting the
    clocks of the vcu and controlling the performance monitors. The second
    bank ("logicoreip") contains the configuration settings of the video codec
    unit, which are set before synthesizing the bitstream.
    
    Drivers that drive the actual video codec unit need to read the
    registers from the logicoreip register bank for configuring the vcu
    firmware.
    
    As logicoreip is a too generic name for this register bank, use
    "vcu-settings" as a binding name, because the register bank basically
    provides the configuration settings of the VCU.
    
    Therefore, add the vcu-settings binding to provide a syscon interface
    for other drivers to read these registers.
    
    The alternative would have been to merge the two register banks of the
    xlnx,vcu binding into one register bank and make xlnx,vcu provide a
    syscon interface, but that would lead to more incompatibility than
    making second register bank of xlnx,vcu optional.
    Signed-off-by: default avatarMichael Tretter <m.tretter@pengutronix.de>
    Reviewed-by: default avatarRob Herring <robh@kernel.org>
    Link: https://lore.kernel.org/r/20201109134818.4159342-3-m.tretter@pengutronix.deSigned-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
    a3857f89
xlnx,vcu.txt 828 Bytes