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FROMGIT: dt-bindings: usb: dwc3: Update dwc3 TX fifo properties

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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: Rob Herring <robh@kernel.org>
Signed-off-by: Wesley Cheng <wcheng@codeaurora.org>
Link: https://lore.kernel.org/r/1625908395-5498-7-git-send-email-wcheng@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cherry picked from commit 97db1b081e1286bdd9dcd4d25b88d6770ff4a65b
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I02e712d37e1fc19634a41afc2ab679346a979b34
This commit is contained in:
Wesley Cheng 2021-07-10 02:13:15 -07:00 committed by Greg Kroah-Hartman
parent b36b813e39
commit 46bf3b94e7
1 changed files with 13 additions and 2 deletions
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15
Documentation/devicetree/bindings/usb/snps,dwc3.yaml
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@ -263,10 +263,21 @@ 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