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| author | Peter Chen <peter.chen@freescale.com> | 2015-07-28 08:33:15 +0300 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2015-08-14 04:16:47 +0300 |
| commit | c6fba7b750efe64a69dd83e0ff7249abd0e783aa (patch) | |
| tree | a579665396e2c163426d12b24cee1c91973b3e9e /Documentation | |
| parent | 0ef877a408ebaa4d65ab1f886100dab198bf673e (diff) | |
| download | linux-c6fba7b750efe64a69dd83e0ff7249abd0e783aa.tar.xz | |
Doc: usb: ci-hdrc-usb2: add ahb-burst-config for binding doc
It is used to change ahb burst configuration for platforms, it is
vendor specific.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt index 4159c8cf78e3..d52a747fb859 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt @@ -32,6 +32,11 @@ Optional properties: - external-vbus-divider: (FSL only) enables off-chip resistor divider for Vbus - itc-setting: interrupt threshold control register control, the setting 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. This + property is used to change AHB burst configuration, check the chipidea + spec for meaning of each value. If this property is not existed, it + will use the reset value. Example: @@ -44,4 +49,6 @@ Example: phy-names = "usb-phy"; vbus-supply = <®_usb0_vbus>; gadget-itc-setting = <0x4>; /* 4 micro-frames */ + /* Incremental burst of unspecified length */ + ahb-burst-config = <0x0>; }; |