External emmc on nano SDMMC3

Robotics & Edge Computing Jetson Systems Jetson Nano
2

I did the same thing in

			override@1 {
				target = <&sdhci2>;
				_overlay_ {
					vqmmc-supply = <&max77620_ldo6>;
					no-sdio;
					no-sd;
					//no-mmc;
					//sd-uhs-sdr104;
					//sd-uhs-sdr50;
					//sd-uhs-sdr25;
					//sd-uhs-sdr12;
				};

And I can detect the emmc on SDMMC3, and I can format、mount、write/read it normally.
But there is error ouput in dmesg just as same as the topic said, it seems not affect the usage?
I wonder is this a stable way to use external emmc?