On Wed, Oct 02, 2019 at 04:00:49PM +0800, JC Kuo wrote: > Extend the bindings to cover the set of features found in Tegra194. > Note that, technically, there are four more supplies connected to the > XUSB pad controller (DVDD_PEX, DVDD_PEX_PLL, HVDD_PEX and HVDD_PEX_PLL) > , but the power sequencing requirements of Tegra194 require these to be > under the control of the PMIC. > > Tegra194 XUSB PADCTL supports up to USB 3.1 Gen 2 speed, however, it is > possible for some platforms have long signal trace that could not > provide sufficient electrical environment for Gen 2 speed. To deal with > this, a new device node property "nvidia,disable-gen2" was added to > Tegra194 that be used to specifically disable Gen 2 speed for a > particular USB 3.0 port so that the port can be limited to Gen 1 speed > and avoid the instability. > > Signed-off-by: JC Kuo <jckuo@xxxxxxxxxx> > --- > .../bindings/phy/nvidia,tegra124-xusb-padctl.txt | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt b/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt > index 9fb682e47c29..3bef37e7c365 100644 > --- a/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt > +++ b/Documentation/devicetree/bindings/phy/nvidia,tegra124-xusb-padctl.txt > @@ -37,6 +37,7 @@ Required properties: > - Tegra132: "nvidia,tegra132-xusb-padctl", "nvidia,tegra124-xusb-padctl" > - Tegra210: "nvidia,tegra210-xusb-padctl" > - Tegra186: "nvidia,tegra186-xusb-padctl" > + - Tegra194: "nvidia,tegra194-xusb-padctl" > - reg: Physical base address and length of the controller's registers. > - resets: Must contain an entry for each entry in reset-names. > - reset-names: Must include the following entries: > @@ -62,6 +63,10 @@ For Tegra186: > - vclamp-usb-supply: Bias rail for USB pad. Must supply 1.8 V. > - vddio-hsic-supply: HSIC PHY power supply. Must supply 1.2 V. > > +For Tegra194: > +- avdd-usb-supply: USB I/Os, VBUS, ID, REXT, D+/D- power supply. Must supply > + 3.3 V. > +- vclamp-usb-supply: Bias rail for USB pad. Must supply 1.8 V. > > Pad nodes: > ========== > @@ -154,6 +159,11 @@ For Tegra210, the list of valid PHY nodes is given below: > - sata: sata-0 > - functions: "usb3-ss", "sata" > > +For Tegra194, the list of valid PHY nodes is given below: > +- usb2: usb2-0, usb2-1, usb2-2, usb2-3 > + - functions: "xusb" > +- usb3: usb3-0, usb3-1, usb3-2, usb3-3 > + - functions: "xusb" > > Port nodes: > =========== > @@ -221,6 +231,9 @@ Optional properties: > is internal. In the absence of this property the port is considered to be > external. > > +- nvidia,disable-gen2: A boolean property whose presence determines that a port > + should be limited to USB 3.1 Gen 1. This properlty is only for Tegra194. s/properlty/property/ With that: Acked-by: Thierry Reding <treding@xxxxxxxxxx>
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