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From: Tejas Joglekar <Tejas.Joglekar@synopsys.com>
To: Tejas Joglekar <Tejas.Joglekar@synopsys.com>,
	linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>
Cc: John Youn <John.Youn@synopsys.com>
Subject: [RFC PATCH 1/4] dt-bindings: usb: Add snps,consolidate-sgl & consolidate-sgl
Date: Fri, 27 Mar 2020 14:04:53 +0530	[thread overview]
Message-ID: <8a9ca8e08d7c4957789a209c77589f1aa4bd2f06.1585297723.git.joglekar@synopsys.com> (raw)
In-Reply-To: <cover.1585297723.git.joglekar@synopsys.com>

This commit adds the documentation for consolidate-sgl, and
snps,consolidate-sgl property. These when set enables the quirk for
XHCI driver for consolidation of sg list into a temporary buffer when small
buffer sizes are scattered over the sg list not making up to MPS or total
transfer size within TRB cache size with Synopsys xHC.

Signed-off-by: Tejas Joglekar <joglekar@synopsys.com>
---
 Documentation/devicetree/bindings/usb/dwc3.txt     | 3 +++
 Documentation/devicetree/bindings/usb/usb-xhci.txt | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 9946ff9ba735..292d1f7969e4 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -104,6 +104,9 @@ Optional properties:
 			this and tx-thr-num-pkt-prd to a valid, non-zero value
 			1-16 (DWC_usb31 programming guide section 1.2.3) to
 			enable periodic ESS TX threshold.
+ - snps,consolidate-sgl: enable sg list consolidation - host mode only. Set to use
+			SG buffers of at least MPS size by consolidating smaller SG
+			buffers list into a single buffer.
 
  - <DEPRECATED> tx-fifo-resize: determines if the FIFO *has* to be reallocated.
  - snps,incr-burst-type-adjustment: Value for INCR burst type of GSBUSCFG0
diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt
index 3f378951d624..a90d853557ee 100644
--- a/Documentation/devicetree/bindings/usb/usb-xhci.txt
+++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt
@@ -43,6 +43,9 @@ Optional properties:
   - quirk-broken-port-ped: set if the controller has broken port disable mechanism
   - imod-interval-ns: default interrupt moderation interval is 5000ns
   - phys : see usb-hcd.yaml in the current directory
+  - consolidate-sgl: indicate if you need to consolidate sg list into a
+    temporary buffer when small SG buffer sizes does not make upto MPS
+    size or total transfer size across the TRB cache size.
 
 additionally the properties from usb-hcd.yaml (in the current directory) are
 supported.
-- 
2.11.0


WARNING: multiple messages have this Message-ID (diff)
From: Tejas Joglekar <Tejas.Joglekar@synopsys.com>
To: Tejas Joglekar <Tejas.Joglekar@synopsys.com>,
	linux-usb@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>
Cc: John Youn <John.Youn@synopsys.com>
Subject: [RESENDING RFC PATCH 1/4] dt-bindings: usb: Add snps,consolidate-sgl & consolidate-sgl
Date: Fri, 27 Mar 2020 15:11:56 +0530	[thread overview]
Message-ID: <8a9ca8e08d7c4957789a209c77589f1aa4bd2f06.1585297723.git.joglekar@synopsys.com> (raw)
Message-ID: <20200327094156.IET3IWw-IlhXMLWuF9DbeI0CwA0oiSuXmZs1vDiXTug@z> (raw)
In-Reply-To: <cover.1585297723.git.joglekar@synopsys.com>

This commit adds the documentation for consolidate-sgl, and
snps,consolidate-sgl property. These when set enables the quirk for
XHCI driver for consolidation of sg list into a temporary buffer when small
buffer sizes are scattered over the sg list not making up to MPS or total
transfer size within TRB cache size with Synopsys xHC.

Signed-off-by: Tejas Joglekar <joglekar@synopsys.com>
---
 Documentation/devicetree/bindings/usb/dwc3.txt     | 3 +++
 Documentation/devicetree/bindings/usb/usb-xhci.txt | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 9946ff9ba735..292d1f7969e4 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -104,6 +104,9 @@ Optional properties:
 			this and tx-thr-num-pkt-prd to a valid, non-zero value
 			1-16 (DWC_usb31 programming guide section 1.2.3) to
 			enable periodic ESS TX threshold.
+ - snps,consolidate-sgl: enable sg list consolidation - host mode only. Set to use
+			SG buffers of at least MPS size by consolidating smaller SG
+			buffers list into a single buffer.
 
  - <DEPRECATED> tx-fifo-resize: determines if the FIFO *has* to be reallocated.
  - snps,incr-burst-type-adjustment: Value for INCR burst type of GSBUSCFG0
diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.txt b/Documentation/devicetree/bindings/usb/usb-xhci.txt
index 3f378951d624..a90d853557ee 100644
--- a/Documentation/devicetree/bindings/usb/usb-xhci.txt
+++ b/Documentation/devicetree/bindings/usb/usb-xhci.txt
@@ -43,6 +43,9 @@ Optional properties:
   - quirk-broken-port-ped: set if the controller has broken port disable mechanism
   - imod-interval-ns: default interrupt moderation interval is 5000ns
   - phys : see usb-hcd.yaml in the current directory
+  - consolidate-sgl: indicate if you need to consolidate sg list into a
+    temporary buffer when small SG buffer sizes does not make upto MPS
+    size or total transfer size across the TRB cache size.
 
 additionally the properties from usb-hcd.yaml (in the current directory) are
 supported.
-- 
2.11.0


  reply	other threads:[~2020-03-27  8:35 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-27  8:52 [RESENDING RFC PATCH 0/4] Add logic to consolidate TRBs for Synopsys xHC Tejas Joglekar
2020-03-27  8:34 ` Tejas Joglekar [this message]
2020-03-27  9:41   ` [RESENDING RFC PATCH 1/4] dt-bindings: usb: Add snps,consolidate-sgl & consolidate-sgl Tejas Joglekar
2020-03-27  9:54   ` Greg KH
2020-03-27 10:11     ` Tejas Joglekar
2020-03-27 10:24       ` Greg KH
2020-03-27 10:28         ` Tejas Joglekar
2020-04-05  1:45   ` Rob Herring
2020-04-14 10:09     ` Tejas Joglekar
2020-04-16  8:22       ` Felipe Balbi
2020-04-16 16:37         ` Tejas Joglekar
2020-04-17 11:44           ` Mathias Nyman
2020-03-27  8:35 ` [RFC PATCH 2/4] usb: xhci: Set quirk for XHCI_CONSOLIDATE_SG_LIST Tejas Joglekar
2020-03-27  9:42   ` [RESENDING RFC " Tejas Joglekar
2020-03-27  8:35 ` [RFC PATCH 3/4] usb: dwc3: Add device property consolidate-sgl Tejas Joglekar
2020-03-27  9:42   ` [RESENDING RFC " Tejas Joglekar
2020-03-27  8:53 ` [RESENDING RFC PATCH 4/4] usb: xhci: Use temporary buffer to consolidate SG Tejas Joglekar
2020-03-27  9:27   ` Greg KH
2020-03-27 10:05     ` Tejas Joglekar
2020-03-27 10:22       ` Greg KH
2020-03-27 11:25         ` Mathias Nyman
2020-03-27 15:38           ` Raul Rangel
2020-03-27  9:28 ` [RESENDING RFC PATCH 0/4] Add logic to consolidate TRBs for Synopsys xHC Greg KH
2020-03-27  9:43   ` Tejas Joglekar

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