[PATCH v2 08/10] Doc: usb: ci-hdrc-usb2: add tx(rx)-burst-config-dword for binding doc
From: Peter Chen <hidden>
Date: 2015-08-03 04:47:16
Also in:
linux-arm-kernel
Subsystem:
open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman
It is used to override the default setting for burst size, changing burst size takes effect only when the SBUSCFG.AHBBRST = 0. Signed-off-by: Peter Chen <redacted> --- Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index 3c377a3..0f0929c 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt@@ -34,6 +34,10 @@ Optional properties: should be aligned with ITC bits at register USBCMD. - ahb-burst-config: it is vendor dependent, the required value should be aligned with AHBBRST at SBUSCFG, the range is from 0x0 to 0x7. +- tx-burst-size-dword: it is vendor dependent, the tx burst size in dword + (4 bytes). +- rx-burst-size-dword: it is vendor dependent, the rx burst size in dword + (4 bytes). Example:
@@ -48,4 +52,6 @@ Example: gadget-itc-setting = <0x4>; /* 4 micro-frames */ /* Incremental burst of unspecified length */ ahb-burst-config = <0x0>; + tx-burst-size-dword = <0x10>; /* 64 bytes */ + rx-burst-size-dword = <0x10>; };
--
1.9.1
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