Re: [PATCH v3 11/28] dt-bindings: usb: dwc3: Add snps,num-hc-interrupters definition

On Wed, Mar 08, 2023 at 03:57:34PM -0800, Wesley Cheng wrote:

Add a new definition for specifying how many XHCI secondary interrupters can be allocated. XHCI in general can potentially support up to 1024 interrupters, which some uses may want to limit depending on how many users utilize the interrupters.

Signed-off-by: Wesley Cheng quic_wcheng@quicinc.com

.../devicetree/bindings/usb/snps,dwc3.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index be36956af53b..4e2417191f93 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -359,6 +359,19 @@ properties: items: enum: [1, 4, 8, 16, 32, 64, 128, 256]

• snps,num-hc-interrupters:
• description:

•  Defines the maximum number of XHCI host controller interrupters that can
  

•  be supported.  The XHCI host controller has support to allocate multiple
  

•  event rings, which can be assigned to different clients/users.  The DWC3
  

•  controller has a maximum of 8 interrupters.  If this is not defined then
  

•  the value will be defaulted to 1.  This parameter is used only when
  

•  operating in host mode.
  

Is this an XHCI or DWC3 feature? The former should be added to the XHCI binding.

• $ref: /schemas/types.yaml#/definitions/uint8
• minimum: 1
• maximum: 8
• default: 1
• port: $ref: /schemas/graph.yaml#/properties/port description: