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android_kernel_samsung_sm87…/bindings/usb/nvidia,tegra20-ehci.txt
Melody Olvera 6f18ce8026 dt-bindings: Add devicetree bindings
Add snapshot of device tree bindings from keystone common kernel, branch
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Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
2023-04-03 15:40:37 -07:00

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Tegra SOC USB controllers
The device node for a USB controller that is part of a Tegra
SOC is as described in the document "Open Firmware Recommended
Practice : Universal Serial Bus" with the following modifications
and additions :
Required properties :
- compatible : For Tegra20, must contain "nvidia,tegra20-ehci".
For Tegra30, must contain "nvidia,tegra30-ehci". Otherwise, must contain
"nvidia,<chip>-ehci" plus at least one of the above, where <chip> is
tegra114, tegra124, tegra132, or tegra210.
- nvidia,phy : phandle of the PHY that the controller is connected to.
- clocks : Must contain one entry, for the module clock.
See ../clocks/clock-bindings.txt for details.
- resets : Must contain an entry for each entry in reset-names.
See ../reset/reset.txt for details.
- reset-names : Must include the following entries:
- usb
Optional properties:
- nvidia,needs-double-reset : boolean is to be set for some of the Tegra20
USB ports, which need reset twice due to hardware issues.