MLK-17399 ARM64: dts: imx8mq: enable usb3 link PM

Enable USB3 hardware link power management, so the link can enter
U1 and U2 if there is no data transfer if the deivce can support
them.

Signed-off-by: Li Jun <jun.li@nxp.com>

diff --git a/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi b/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
index 7313df9..a14e7dc 100644 (file)
--- a/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-imx8mq.dtsi
@@ -887,6 +887,7 @@
                        power-domains = <&usb_otg1_pd>;
                        snps,power-down-scale = <2>;
                        usb3-resume-missing-cas;
+                       usb3-lpm-capable;
                        status = "disabled";
                };
        };
@@ -927,6 +928,7 @@
                        power-domains = <&usb_otg2_pd>;
                        snps,power-down-scale = <2>;
                        usb3-resume-missing-cas;
+                       usb3-lpm-capable;
                        status = "disabled";
                };
        };