Commit 97db1b08 authored by Wesley Cheng's avatar Wesley Cheng Committed by Greg Kroah-Hartman
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dt-bindings: usb: dwc3: Update dwc3 TX fifo properties 



Update the tx-fifo-resize property with a better description, while
adding the tx-fifo-max-num, which is a new parameter allowing
adjustments for the maximum number of packets the txfifo resizing logic
can account for while resizing the endpoints.

Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarWesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1625908395-5498-7-git-send-email-wcheng@codeaurora.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent cefdd52f

Documentation/devicetree/bindings/usb/snps,dwc3.yaml

+13 −2
Original line number Diff line number Diff line
@@ -289,10 +289,21 @@ properties: 
    maximum: 16



  tx-fifo-resize:

    description: Determines if the FIFO *has* to be reallocated

    deprecated: true

    description: Determines if the TX fifos can be dynamically resized depending

      on the number of IN endpoints used and if bursting is supported.  This

      may help improve bandwidth on platforms with higher system latencies, as

      increased fifo space allows for the controller to prefetch data into its

      internal memory.

    type: boolean



  tx-fifo-max-num:

    description: Specifies the max number of packets the txfifo resizing logic

      can account for when higher endpoint bursting is used. (bMaxBurst > 6) The

      higher the number, the more fifo space the txfifo resizing logic will

      allocate for that endpoint.

    $ref: /schemas/types.yaml#/definitions/uint8

    minimum: 3



  snps,incr-burst-type-adjustment:

    description:

      Value for INCR burst type of GSBUSCFG0 register, undefined length INCR