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| author | Peter Chen <peter.chen@nxp.com> | 2018-08-21 17:15:36 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2018-10-29 11:10:38 +0800 |
| commit | f317c562b65a6ff53464c1c34ce4824a69e9f78f (patch) | |
| tree | 8fb05528b48cbc96bd30185e01ed7798096fea31 /Documentation | |
| parent | c6fc74942fb9afb0a1acf2c6fea92628ab00eebb (diff) | |
MLK-19258-4 doc: dts: ci-hdrc-usb2: add property for picophy
Add two parameters which are used to tune USB signal for picophy,
picophy is used at imx7d and imx845.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt index 1fc8a564efaa..2bff168f83bc 100644 --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt @@ -102,6 +102,11 @@ i.mx specific properties - power-polarity-active-high: add this property if port power function of ehci is used to enable vbus, and the vbus power supply chip enable signal is high active. +- picophy,pre-emp-curr-control: picophy is used for imx7d and imx845. + HS Treansmitter Pre-Emphasis Current Control may need to tune for USB signal + See USBNC_n_PHY_CFG1 for detail. +- picophy,dc-vol-level-adjust: HS DC Voltage Level Adjustment may need to + turn for USB signal, see USBNC_n_PHY_CFG1 for detail. Examples: |