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From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Felipe Balbi <balbi@kernel.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Thinh.Nguyen@synopsys.com, linux-usb@vger.kernel.org,
	devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>
Cc: John Youn <John.Youn@synopsys.com>
Subject: [PATCH v7 1/6] dt-binding: usb: Include USB SSP rates in GenXxY
Date: Tue, 19 Jan 2021 17:36:08 -0800	[thread overview]
Message-ID: <cc7cc15f87e209c9963f19129f51398cdc374358.1611106162.git.Thinh.Nguyen@synopsys.com> (raw)
In-Reply-To: <cover.1611106162.git.Thinh.Nguyen@synopsys.com>

According to the USB 3.2 spec, a SuperSpeed Plus device can operate at
gen2x2, gen2x1, or gen1x2. If the USB controller device supports
multiple lanes at different transfer rates, the user can specify the HW
capability via these new speed strings:

"super-speed-plus-gen2x2"
"super-speed-plus-gen2x1"
"super-speed-plus-gen1x2"

If the argument is simply "super-speed-plus", USB controllers should
default to their maximum transfer rate and number of lanes.

Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
---
Changes in v7:
- Rebase on Greg's usb-testing branch
Changes in v6:
- Update the different maximum_speed enums to the usb.yaml
- Remove Reviewed-by: Rob Herring <robh@kernel.org> because the commit is updated
- Rebase on Greg's usb-testing branch
- Update commit message
Changes in v5:
- Add Reviewed-by: Rob Herring <robh@kernel.org>
- Rebase on Felipe's testing/next branch
- Changed Signed-off-by email to match From: email header
Changes in v4:
- None
Changes in v3:
- Use "maximum-speed" to include both the num-lane and transfer rate for SSP
- Remove "num-lanes" and "lane-speed-mantissa-gbps" properties
Changes in v2:
- Make "num-lanes" and "lane-speed-mantissa-gbps" common USB properties

 Documentation/devicetree/bindings/usb/usb.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/usb.yaml b/Documentation/devicetree/bindings/usb/usb.yaml
index ebe7f4275c59..78491e66ed24 100644
--- a/Documentation/devicetree/bindings/usb/usb.yaml
+++ b/Documentation/devicetree/bindings/usb/usb.yaml
@@ -54,6 +54,9 @@ properties:
       - high-speed
       - super-speed
       - super-speed-plus
+      - super-speed-plus-gen2x1
+      - super-speed-plus-gen1x2
+      - super-speed-plus-gen2x2
 
 additionalProperties: true
 
-- 
2.28.0


  reply	other threads:[~2021-01-20  1:43 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20  1:36 [PATCH v7 0/6] usb: Support USB 3.2 multi-lanes Thinh Nguyen
2021-01-20  1:36 ` Thinh Nguyen [this message]
2021-02-05  2:32   ` [PATCH v7 1/6] dt-binding: usb: Include USB SSP rates in GenXxY Thinh Nguyen
2021-02-05 20:46   ` Rob Herring
2021-02-06  3:14     ` Thinh Nguyen
2021-01-20  1:36 ` [PATCH v7 2/6] usb: common: Parse for USB SSP genXxY Thinh Nguyen
2021-01-20  1:36 ` [PATCH v7 3/6] usb: dwc3: core: Check maximum_speed " Thinh Nguyen
2021-01-20  1:36 ` [PATCH v7 4/6] usb: dwc3: gadget: Implement setting of SSP rate Thinh Nguyen
2021-01-20  1:36 ` [PATCH v7 5/6] usb: dwc3: gadget: Track connected SSP rate and lane count Thinh Nguyen
2021-01-20  1:36 ` [PATCH v7 6/6] usb: dwc3: gadget: Set speed only up to the max supported Thinh Nguyen
2021-02-05  2:39 ` [PATCH v7 0/6] usb: Support USB 3.2 multi-lanes Thinh Nguyen
2021-02-05  6:49   ` Greg Kroah-Hartman

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