tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1Qualcomm QUSB2 phy controller
2=============================
3
4QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
5
6Required properties:
7 - compatible: compatible list, contains "qcom,msm8996-qusb2-phy".
8 - reg: offset and length of the PHY register set.
9 - #phy-cells: must be 0.
10
11 - clocks: a list of phandles and clock-specifier pairs,
12 one for each entry in clock-names.
13 - clock-names: must be "cfg_ahb" for phy config clock,
14 "ref" for 19.2 MHz ref clk,
15 "iface" for phy interface clock (Optional).
16
17 - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
18 - vdda-phy-dpdm-supply: Phandle to 3.1V regulator supply to Dp/Dm port signals.
19
20 - resets: Phandle to reset to phy block.
21
22Optional properties:
23 - nvmem-cells: Phandle to nvmem cell that contains 'HS Tx trim'
24 tuning parameter value for qusb2 phy.
25
26 - qcom,tcsr-syscon: Phandle to TCSR syscon register region.
27
28Example:
29 hsusb_phy: phy@7411000 {
30 compatible = "qcom,msm8996-qusb2-phy";
31 reg = <0x7411000 0x180>;
32 #phy-cells = <0>;
33
34 clocks = <&gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>,
35 <&gcc GCC_RX1_USB2_CLKREF_CLK>,
36 clock-names = "cfg_ahb", "ref";
37
38 vdda-pll-supply = <&pm8994_l12>;
39 vdda-phy-dpdm-supply = <&pm8994_l24>;
40
41 resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
42 nvmem-cells = <&qusb2p_hstx_trim>;
43 };