diff options
Diffstat (limited to 'Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt index c4c9e9e664a..ba797d3e632 100644 --- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt +++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt @@ -3,7 +3,7 @@ Tegra SOC USB PHY The device node for Tegra SOC USB PHY: Required properties : - - compatible : Should be "nvidia,tegra20-usb-phy". + - compatible : Should be "nvidia,tegra<chip>-usb-phy". - reg : Defines the following set of registers, in the order listed: - The PHY's own register set. Always present. @@ -24,17 +24,26 @@ Required properties : Required properties for phy_type == ulpi: - nvidia,phy-reset-gpio : The GPIO used to reset the PHY. -Required PHY timing params for utmi phy: +Required PHY timing params for utmi phy, for all chips: - nvidia,hssync-start-delay : Number of 480 Mhz clock cycles to wait before start of sync launches RxActive - nvidia,elastic-limit : Variable FIFO Depth of elastic input store - nvidia,idle-wait-delay : Number of 480 Mhz clock cycles of idle to wait before declare IDLE. - nvidia,term-range-adj : Range adjusment on terminations - - nvidia,xcvr-setup : HS driver output control + - Either one of the following for HS driver output control: + - nvidia,xcvr-setup : integer, uses the provided value. + - nvidia,xcvr-setup-use-fuses : boolean, indicates that the value is read + from the on-chip fuses + If both are provided, nvidia,xcvr-setup-use-fuses takes precedence. - nvidia,xcvr-lsfslew : LS falling slew rate control. - nvidia,xcvr-lsrslew : LS rising slew rate control. +Required PHY timing params for utmi phy, only on Tegra30 and above: + - nvidia,xcvr-hsslew : HS slew rate control. + - nvidia,hssquelch-level : HS squelch detector level. + - nvidia,hsdiscon-level : HS disconnect detector level. + Optional properties: - nvidia,has-legacy-mode : boolean indicates whether this controller can operate in legacy mode (as APX 2500 / 2600). In legacy mode some @@ -48,5 +57,5 @@ Optional properties: peripheral means it is device controller otg means it can operate as either ("on the go") -Required properties for dr_mode == otg: +VBUS control (required for dr_mode == otg, optional for dr_mode == host): - vbus-supply: regulator for VBUS |