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From: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
	linux-usb@vger.kernel.org, devicetree@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 11/14] usb: devicetree: dwc3: Add TRB prefetch count
Date: Wed, 11 Dec 2019 18:50:07 -0800	[thread overview]
Message-ID: <7098386bb19ebfee02027555d86fc47822b617d4.1576118671.git.thinhn@synopsys.com> (raw)
In-Reply-To: <cover.1576118671.git.thinhn@synopsys.com>

DWC_usb32 has an enhancement that allows the controller to cache
multiple TRBs for non-control endpoints. Introduce a new property to
DWC3 to set the maximum number of TRBs to cache in advance. The property
can be set from 1 to DWC_USB32_CACHE_TRBS_PER_TRANSFER (CoreConsultant
value). By default, the number of cache TRB is
DWC_USB32_CACHE_TRBS_PER_TRANSFER.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
---
 Documentation/devicetree/bindings/usb/dwc3.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 7da1c4e7d380..ff35fa6de2eb 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -105,6 +105,9 @@ 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,num-trb-prefetch: max value to do TRBs cache for DWC_usb32. The value
+			can be from 1 to DWC_USB32_CACHE_TRBS_PER_TRANSFER.
+			Default value is DWC_USB32_CACHE_TRBS_PER_TRANSFER.
 
  - <DEPRECATED> tx-fifo-resize: determines if the FIFO *has* to be reallocated.
  - snps,incr-burst-type-adjustment: Value for INCR burst type of GSBUSCFG0
-- 
2.11.0


  parent reply	other threads:[~2019-12-12  2:50 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-12  2:48 [RFC PATCH 00/14] usb: dwc3: Introduce DWC_usb32 Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 01/14] usb: gadget: Add lane count and lsm Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 02/14] usb: gadget: Add callback to set lane and transfer rate Thinh Nguyen
2019-12-12  7:58   ` Felipe Balbi
2019-12-12 15:49     ` Alan Stern
2019-12-12 22:33       ` Thinh Nguyen
2019-12-12 22:10     ` Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 03/14] usb: composite: Properly report lsm Thinh Nguyen
2019-12-12  7:59   ` Felipe Balbi
2019-12-12 22:10     ` Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 04/14] usb: dwc3: Implement new id check for DWC_usb32 Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 05/14] usb: dwc3: Update IP checks to support DWC_usb32 Thinh Nguyen
2019-12-12  8:05   ` Felipe Balbi
2019-12-12 22:12     ` Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 06/14] usb: devicetree: dwc3: Add max lane and lsm Thinh Nguyen
2019-12-12  8:06   ` Felipe Balbi
2019-12-19 22:09   ` Rob Herring
2019-12-19 22:49     ` Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 07/14] usb: dwc3: gadget: Set lane count " Thinh Nguyen
2019-12-12  8:14   ` Felipe Balbi
2019-12-12 22:15     ` Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 08/14] usb: dwc3: gadget: Track connected lane count and speed Thinh Nguyen
2019-12-12  2:49 ` [RFC PATCH 09/14] usb: dwc3: gadget: Limit the setting of speed Thinh Nguyen
2019-12-12  2:50 ` [RFC PATCH 10/14] usb: dwc3: Update HWPARAMS0.MDWIDTH for DWC_usb32 Thinh Nguyen
2019-12-12  2:50 ` Thinh Nguyen [this message]
2019-12-12  8:18   ` [RFC PATCH 11/14] usb: devicetree: dwc3: Add TRB prefetch count Felipe Balbi
2019-12-12 22:16     ` Thinh Nguyen
2019-12-12  2:50 ` [RFC PATCH 12/14] usb: dwc3: gadget: Set number of TRB prefetch Thinh Nguyen
2019-12-12  2:50 ` [RFC PATCH 13/14] usb: devicetree: dwc3: Add property to disable mult TRB fetch Thinh Nguyen
2019-12-12  8:19   ` Felipe Balbi
2019-12-12 22:28     ` Thinh Nguyen
2019-12-13  7:04       ` Felipe Balbi
2019-12-13 20:10         ` Thinh Nguyen
2019-12-19 22:17         ` Rob Herring
2019-12-19 22:51           ` Thinh Nguyen
2019-12-20 22:11             ` Rob Herring
2019-12-20 23:52               ` Thinh Nguyen
2019-12-12  2:50 ` [RFC PATCH 14/14] usb: dwc3: gadget: Implement disabling of " Thinh Nguyen

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