SD-MMC (mmc1) on production module

Autonomous Machines Jetson & Embedded Systems Jetson Nano
21

By adding those missing parameters into the dts, I got the card working… Just not in UHS speed :/
What I have right now in the DTS entry:

		status = "okay";
 		/delete-property/ keep-power-in-suspend;
 		/delete-property/ non-removable;
		/delete-property/ nvidia,min-tap-delay;
		/delete-property/ nvidia,max-tap-delay;
		// TO GPIO08 (phy pin 208)
		cd-gpios = <&gpio TEGRA_GPIO(Z, 2) 0>;
		mmc-ocr-mask = <3>;
		uhs-mask = <0x0>;
		tap-delay = <3>;
		vmmc-supply = <&p3448_vdd_3v3_sd_nova>;
		vqmmc-supply = <&max77620_ldo6>;
		sd-uhs-sdr104;
		sd-uhs-sdr50;
		sd-uhs-sdr25;
		sd-uhs-sdr12;
		mmc-ddr-1_8v;
		mmc-hs200-1_8v;
		no-sdio;
		no-mmc;

Working on that now. Current speed test gives:

dd if=/dev/zero of=/media/sdcard/chibre conv=fdatasync bs=384k count=1k
1024+0 records in
1024+0 records out
402653184 bytes (403 MB, 384 MiB) copied, 30.2988 s, 13.3 MB/s
22

Thank you :)
I’m recompiling to try this solution as we speak. (Just modified CD and SD_EN gpio values to match my board)
Hoping for the best !

23

Got it working after fixing this. Reported write speed seems to match the specs of our card. Trying higher class ones today hopefully :)
Thanks