From: <dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
To: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
pawel.moll-5wv7dgnIgG8@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org,
galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
paulz-HKixBCOQz3hWk0Htik3J/w@public.gmane.org
Cc: dinh.linux-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Dinh Nguyen <dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
Subject: [PATCHv2 2/2] Documentation: dt: add an optional dma-desc-enable property for dwc2 usb
Date: Tue, 6 May 2014 18:00:42 -0500 [thread overview]
Message-ID: <1399417243-4614-2-git-send-email-dinguyen@altera.com> (raw)
In-Reply-To: <1399417243-4614-1-git-send-email-dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
From: Dinh Nguyen <dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
The "dma-desc-enable" property can be used to enable descriptor DMA mode
for the DWC2 USB IP.
Signed-off-by: Dinh Nguyen <dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
---
v2: Reword property description to enable instead of disable
---
Documentation/devicetree/bindings/usb/dwc2.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt
index b8b6871..9b471b5 100644
--- a/Documentation/devicetree/bindings/usb/dwc2.txt
+++ b/Documentation/devicetree/bindings/usb/dwc2.txt
@@ -14,6 +14,13 @@ Refer to clk/clock-bindings.txt for generic clock consumer properties
Optional properties:
- phys: phy provider specifier
- phy-names: shall be "device"
+- dma-desc-enable: Should be <1> to enable descriptor dma mode. This
+ property is used to enable descriptor DMA support. The reason why
+ this property is needed is because the HW supports descriptor DMA
+ mode, but descriptor dma mode will not support SPLIT transactions.
+ So this property can be used to optionally enable descriptor DMA
+ support.
+
Refer to phy/phy-bindings.txt for generic phy consumer properties
Example:
--
1.7.9.5
--
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next prev parent reply other threads:[~2014-05-06 23:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-06 23:00 [PATCHv2 1/2] usb: dwc2: Disable descriptor dma mode by default dinguyen-EIB2kfCEclfQT0dZR+AlfA
[not found] ` <1399417243-4614-1-git-send-email-dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
2014-05-06 23:00 ` dinguyen-EIB2kfCEclfQT0dZR+AlfA [this message]
[not found] ` <1399417243-4614-2-git-send-email-dinguyen-EIB2kfCEclfQT0dZR+AlfA@public.gmane.org>
2014-05-07 16:22 ` [PATCHv2 2/2] Documentation: dt: add an optional dma-desc-enable property for dwc2 usb Sergei Shtylyov
2014-05-06 23:33 ` [PATCHv2 1/2] usb: dwc2: Disable descriptor dma mode by default Paul Zimmerman
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