Commit | Line | Data |
---|---|---|
47555a5c YG |
1 | * Qualcomm Technologies Inc Universal Flash Storage (UFS) PHY |
2 | ||
3 | UFSPHY nodes are defined to describe on-chip UFS PHY hardware macro. | |
4 | Each UFS PHY node should have its own node. | |
5 | ||
6 | To bind UFS PHY with UFS host controller, the controller node should | |
7 | contain a phandle reference to UFS PHY node. | |
8 | ||
9 | Required properties: | |
10 | - compatible : compatible list, contains "qcom,ufs-phy-qmp-20nm" | |
11 | or "qcom,ufs-phy-qmp-14nm" according to the relevant phy in use. | |
12 | - reg : should contain PHY register address space (mandatory), | |
13 | - reg-names : indicates various resources passed to driver (via reg proptery) by name. | |
14 | Required "reg-names" is "phy_mem". | |
15 | - #phy-cells : This property shall be set to 0 | |
16 | - vdda-phy-supply : phandle to main PHY supply for analog domain | |
17 | - vdda-pll-supply : phandle to PHY PLL and Power-Gen block power supply | |
18 | - clocks : List of phandle and clock specifier pairs | |
19 | - clock-names : List of clock input name strings sorted in the same | |
20 | order as the clocks property. "ref_clk_src", "ref_clk", | |
21 | "tx_iface_clk" & "rx_iface_clk" are mandatory but | |
22 | "ref_clk_parent" is optional | |
23 | ||
24 | Optional properties: | |
25 | - vdda-phy-max-microamp : specifies max. load that can be drawn from phy supply | |
26 | - vdda-pll-max-microamp : specifies max. load that can be drawn from pll supply | |
27 | - vddp-ref-clk-supply : phandle to UFS device ref_clk pad power supply | |
28 | - vddp-ref-clk-max-microamp : specifies max. load that can be drawn from this supply | |
29 | - vddp-ref-clk-always-on : specifies if this supply needs to be kept always on | |
30 | ||
31 | Example: | |
32 | ||
33 | ufsphy1: ufsphy@0xfc597000 { | |
34 | compatible = "qcom,ufs-phy-qmp-20nm"; | |
35 | reg = <0xfc597000 0x800>; | |
36 | reg-names = "phy_mem"; | |
37 | #phy-cells = <0>; | |
38 | vdda-phy-supply = <&pma8084_l4>; | |
39 | vdda-pll-supply = <&pma8084_l12>; | |
40 | vdda-phy-max-microamp = <50000>; | |
41 | vdda-pll-max-microamp = <1000>; | |
42 | clock-names = "ref_clk_src", | |
43 | "ref_clk_parent", | |
44 | "ref_clk", | |
45 | "tx_iface_clk", | |
46 | "rx_iface_clk"; | |
47 | clocks = <&clock_rpm clk_ln_bb_clk>, | |
48 | <&clock_gcc clk_pcie_1_phy_ldo >, | |
49 | <&clock_gcc clk_ufs_phy_ldo>, | |
50 | <&clock_gcc clk_gcc_ufs_tx_cfg_clk>, | |
51 | <&clock_gcc clk_gcc_ufs_rx_cfg_clk>; | |
52 | }; | |
53 | ||
54 | ufshc@0xfc598000 { | |
55 | ... | |
56 | phys = <&ufsphy1>; | |
57 | phy-names = "ufsphy"; | |
58 | }; |