mirror of
https://github.com/AsahiLinux/u-boot
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32 lines
1.1 KiB
Text
32 lines
1.1 KiB
Text
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Generic USB Properties
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Optional properties:
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- maximum-speed: tells USB controllers we want to work up to a certain
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speed. Valid arguments are "super-speed-plus",
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"super-speed", "high-speed", "full-speed" and
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"low-speed". In case this isn't passed via DT, USB
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controllers should default to their maximum HW
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capability.
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- dr_mode: tells Dual-Role USB controllers that we want to work on a
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particular mode. Valid arguments are "host",
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"peripheral" and "otg". In case this attribute isn't
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passed via DT, USB DRD controllers should default to
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OTG.
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- phy_type: tells USB controllers that we want to configure the core to support
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a UTMI+ PHY with an 8- or 16-bit interface if UTMI+ is
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selected. Valid arguments are "utmi" and "utmi_wide".
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In case this isn't passed via DT, USB controllers should
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default to HW capability.
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This is an attribute to a USB controller such as:
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dwc3@4a030000 {
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compatible = "synopsys,dwc3";
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reg = <0x4a030000 0xcfff>;
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interrupts = <0 92 4>
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usb-phy = <&usb2_phy>, <&usb3,phy>;
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maximum-speed = "super-speed";
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dr_mode = "otg";
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phy_type = "utmi_wide";
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};
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