mirror of https://gitee.com/openkylin/linux.git
66 lines
2.3 KiB
Plaintext
66 lines
2.3 KiB
Plaintext
OMAP GLUE AND OTHER OMAP SPECIFIC COMPONENTS
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OMAP MUSB GLUE
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- compatible : Should be "ti,omap4-musb" or "ti,omap3-musb"
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- ti,hwmods : must be "usb_otg_hs"
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- ti,has-mailbox : to specify that omap uses an external mailbox
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(in control module) to communicate with the musb core during device connect
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and disconnect.
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- multipoint : Should be "1" indicating the musb controller supports
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multipoint. This is a MUSB configuration-specific setting.
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- num_eps : Specifies the number of endpoints. This is also a
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MUSB configuration-specific setting. Should be set to "16"
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- ram_bits : Specifies the ram address size. Should be set to "12"
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- interface_type : This is a board specific setting to describe the type of
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interface between the controller and the phy. It should be "0" or "1"
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specifying ULPI and UTMI respectively.
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- mode : Should be "3" to represent OTG. "1" signifies HOST and "2"
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represents PERIPHERAL.
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- power : Should be "50". This signifies the controller can supply upto
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100mA when operating in host mode.
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Optional properties:
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- ctrl-module : phandle of the control module this glue uses to write to
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mailbox
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SOC specific device node entry
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usb_otg_hs: usb_otg_hs@4a0ab000 {
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compatible = "ti,omap4-musb";
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ti,hwmods = "usb_otg_hs";
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ti,has-mailbox;
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multipoint = <1>;
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num_eps = <16>;
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ram_bits = <12>;
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ctrl-module = <&omap_control_usb>;
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};
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Board specific device node entry
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&usb_otg_hs {
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interface_type = <1>;
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mode = <3>;
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power = <50>;
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};
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OMAP CONTROL USB
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Required properties:
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- compatible: Should be "ti,omap-control-usb"
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- reg : Address and length of the register set for the device. It contains
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the address of "control_dev_conf" and "otghs_control" or "phy_power_usb"
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depending upon omap4 or omap5.
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- reg-names: The names of the register addresses corresponding to the registers
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filled in "reg".
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- ti,type: This is used to differentiate whether the control module has
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usb mailbox or usb3 phy power. omap4 has usb mailbox in control module to
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notify events to the musb core and omap5 has usb3 phy power register to
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power on usb3 phy. Should be "1" if it has mailbox and "2" if it has usb3
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phy power.
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omap_control_usb: omap-control-usb@4a002300 {
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compatible = "ti,omap-control-usb";
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reg = <0x4a002300 0x4>,
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<0x4a00233c 0x4>;
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reg-names = "control_dev_conf", "otghs_control";
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ti,type = <1>;
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};
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