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 <peter.chen@xxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/usb/ci-hdrc-imx.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-imx.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-imx.txt
index a548502..892bac8 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-imx.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-imx.txt
@@ -24,6 +24,10 @@ 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)
Examples:
usb@02184000 { /* USB OTG */
@@ -38,4 +42,6 @@ usb@02184000 { /* USB OTG */
tpl-support;
gadget-itc-setting = <0x4>; /* 4 micro-frames */
ahb-burst-config = <0x0>; /* Incremental burst of unspecified length */
+ tx-burst-size-dword = <0x10>;
+ rx-burst-size-dword = <0x10>;
};
--
1.9.1
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