# USB devicetree properties

The DT properties for USB allow you to adjust the USB signal quality.

For information about USB features and architecture, see
[USB](https://docs.qualcomm.com/doc/80-70030-8/topic/usb.html).

The DT file path in the Linux host computer is: `/boot_images/boot/Settings/Soc/<Chipset>/Core/WiredConnectivity/USB/usb.dtsi`.

Table : USB DT properties

| Property name | Property description | Data type | Possible values/value range | Device behavior |
| --- | --- | --- | --- | --- |
| `path=/soc/usb0/hs_phy_cfg` | Applies to the primary USB controller high-speed PHY (HSPHY) for configuring the USB signal quality. | UINT32-array | <ul class="simple"><br><li><p>An array of address, value pairs &lt;addr, val&gt;.</p></li><br><li><p>addr is 4 B in length. It can have 1 of the 4 values: [0x88E306C, 0x88E3070, 0x88E3074, 0x88E3078].</p></li><br><li><p>val is of 1 B in length, range: 0x00 to 0xFF.</p></li><br></ul> | By tuning this property, the USB signal quality of the primary USB HSPHY is improved. |
| `path=/soc/usb0/ss_phy_cfg` | Applies to the primary USB controller SuperSpeed PHY (SSPHY) for configuring the signal quality. | UINT32-array | <ul class="simple"><br><li><p>Array of address, value pairs &lt;addr, val&gt;.</p></li><br><li><p>addr is 4 B in length: [0x088E8000 to 0x088EB000].</p></li><br><li><p>val is of 1 B in length, range: 0x00 to 0xFF.</p></li><br></ul> | By tuning this property, the USB signal quality for primary USB SSPHY is improved. |
| `path=/soc/usb1/hs_phy_cfg` | Applies to the secondary USB controller high-speed PHY (HSPHY). Used for configuring the USB signal quality. | UINT32-array | <ul class="simple"><br><li><p>Array of address, value pairs &lt;addr, val&gt;.</p></li><br><li><p>Address is 4 B in length. It can have 1 of the 4 values: [0x88E406C, 0x88E4070, 0x88E4074, 0x88E4078].</p></li><br><li><p>val is of 1 B in length, range: 0x00 to 0xFF.</p></li><br></ul> | By tuning this property, the USB signal quality for the secondary USB HSPHY is improved. |

Last Published: Jul 20, 2026

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