diff options
| author | Wesley Cheng <wcheng@codeaurora.org> | 2021-07-10 11:13:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-12 09:37:26 +0200 |
| commit | 97db1b081e1286bdd9dcd4d25b88d6770ff4a65b (patch) | |
| tree | b8f645d35ad0ee9d0e3cdc52a9266fbe97d30e0b /Documentation | |
| parent | usb: dwc3: dwc3-qcom: Enable tx-fifo-resize property by default (diff) | |
| download | linux-97db1b081e1286bdd9dcd4d25b88d6770ff4a65b.tar.xz linux-97db1b081e1286bdd9dcd4d25b88d6770ff4a65b.zip | |
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: 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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index 41416fbd92aa..078fb7889593 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -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 |