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| author |   Huang Rui <ray.huang@amd.com> | 2014-10-31 11:11:18 +0800 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2014-11-03 10:03:41 -0600 |
| commit | 460d098cb6728134e0e4ba3d58e10bb43032daa5 (patch) | |
| tree | fbdd6c3e61e7b5000c8574b9927c614004829574 /Documentation/devicetree/bindings/usb/dwc3.txt | |
| parent | usb: dwc3: add support for AMD Nolan platform (diff) | |
| download | linux-dev-460d098cb6728134e0e4ba3d58e10bb43032daa5.tar.xz linux-dev-460d098cb6728134e0e4ba3d58e10bb43032daa5.zip | |
usb: dwc3: make HIRD threshold configurable
HIRD threshold should be configurable by different platforms.
From DesignWare databook:
When HIRD_Threshold[4] is set to 1b1 and HIRD value is greater than or
equal to the value in HIRD_Threshold[3:0], dwc3 asserts output signals
utmi_l1_suspend_n to put PHY into Deep Low-Power mode in L1.
When HIRD_Threshold[4] is set to 1b0 or the HIRD value is less than
HIRD_Threshold[3:0], dwc3 asserts output signals utmi_sleep_n on L1.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation/devicetree/bindings/usb/dwc3.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/dwc3.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt index f200ecc1f0dc..cd7f0454e13a 100644 --- a/Documentation/devicetree/bindings/usb/dwc3.txt +++ b/Documentation/devicetree/bindings/usb/dwc3.txt @@ -34,6 +34,9 @@ Optional properties: LTSSM during USB3 Compliance mode. - snps,dis_u3_susphy_quirk: when set core will disable USB3 suspend phy. - snps,dis_u2_susphy_quirk: when set core will disable USB2 suspend phy. + - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal + utmi_l1_suspend_n, false when asserts utmi_sleep_n + - snps,hird-threshold: HIRD threshold This is usually a subnode to DWC3 glue to which it is connected. |