2 --------------------------
4 T-phy controller supports physical layer functionality for a number of
5 controllers on MediaTek SoCs, such as, USB2.0, USB3.0, PCIe, and SATA.
7 Required properties (controller (parent) node):
8 - compatible : should be one of
9 "mediatek,generic-tphy-v1"
10 "mediatek,generic-tphy-v2"
12 - #address-cells: the number of cells used to represent physical
14 - #size-cells: the number of cells used to represent the size of an address.
15 - ranges: the address mapping relationship to the parent, defined with
16 - empty value: if optional 'reg' is used.
17 - non-empty value: if optional 'reg' is not used. should set
18 the child's base address to 0, the physical address
19 within parent's address space, and the length of
22 Required nodes : a sub-node is required for each port the controller
23 provides. Address range information including the usual
24 'reg' property is used inside these nodes to describe
25 the controller's topology.
27 Optional properties (controller (parent) node):
28 - reg : offset and length of register shared by multiple ports,
29 exclude port's private register.
30 - mediatek,src-ref-clk-mhz : frequency of reference clock for slew rate
32 - mediatek,src-coef : coefficient for slew rate calibrate, depends on
35 Required properties (port (child) node):
36 - reg : address and length of the register set for the port.
37 - #phy-cells : should be 1 (See second example)
38 cell after port phandle is phy type from:
44 Optional properties (port (child) node):
45 - clocks : a list of phandle + clock-specifier pairs, one for each
47 - clock-names : may contain
48 "ref": 48M reference clock for HighSpeed (digital) phy; and 26M
49 reference clock for SuperSpeed (digital) phy, sometimes is
50 24M, 25M or 27M, depended on platform.
51 "da_ref": the reference clock of analog phy, used if the clocks
52 of analog and digital phys are separated, otherwise uses
53 "ref" clock only if needed.
57 u3phy2: usb-phy@1a244000 {
58 compatible = "mediatek,generic-tphy-v1";
59 reg = <0x1a244000 0x0700>;
65 u2port1: usb-phy@1a244800 {
66 reg = <0x1a244800 0x0100>;
67 clocks = <&topckgen CLK_TOP_USB_PHY48M>;
73 u3port1: usb-phy@1a244900 {
74 reg = <0x1a244900 0x0700>;
82 Specifying phy control of devices
83 ---------------------------------
85 Device nodes should specify the configuration required in their "phys"
86 property, containing a phandle to the phy port node and a device type;
87 phy-names for each port are optional.
91 #include <dt-bindings/phy/phy.h>
95 phys = <&u2port0 PHY_TYPE_USB2>, <&u3port0 PHY_TYPE_USB3>;
96 phy-names = "usb2-0", "usb3-0";
100 Layout differences of banks between TPHY V1 and V2
101 -------------------------------------------------------------
106 u2 port0 0x0800 U2PHY_COM
107 u3 port0 0x0900 U3PHYD
111 u2 port1 0x1000 U2PHY_COM
112 u3 port1 0x1100 U3PHYD
116 u2 port2 0x1800 U2PHY_COM
124 u3 port0 0x0700 SPLLC
133 u3 port1 0x1700 SPLLC
142 SPLLC shared by u3 ports and FMREG shared by u2 ports on
143 TPHY V1 are put back into each port; a new bank MISC for
144 u2 ports and CHIP for u3 ports are added on TPHY V2.