As per AM62A TRM [1] USB Link Power Management (LPM) feature is not supported. Disable it else it may cause enumeration failure on some devices. > 4.9.2.1 USB2SS Unsupported Features > The following features are not supported on this family of devices: > ... > - USB 2.0 ECN: Link Power Management (LPM) > ... [1] - https://www.ti.com/lit/pdf/spruj16 Signed-off-by: Roger Quadros <rogerq@xxxxxxxxxx> --- Changelog: v5: new patch --- arch/arm64/boot/dts/ti/k3-am62a-main.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi index a158df0d0ba6..adaf578280f9 100644 --- a/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62a-main.dtsi @@ -621,6 +621,8 @@ usb0: usb@31000000 { interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; @@ -644,6 +646,8 @@ usb1: usb@31100000 { interrupt-names = "host", "peripheral"; maximum-speed = "high-speed"; dr_mode = "otg"; + snps,usb2-gadget-lpm-disable; + snps,usb2-lpm-disable; }; }; -- 2.34.1
