Booting from SD Card with a Jetson Nano production module

Autonomous Machines Jetson & Embedded Systems Jetson Nano
26

Now the node sdhci@700b0400 have it:

sdhci@700b0400 { /* SDMMC1 for SD card */
	default-drv-type = <1>;
	cd-gpios = <&gpio TEGRA_GPIO(Z, 1) 0>;
	sd-uhs-sdr104;
	sd-uhs-sdr50;
	sd-uhs-sdr25;
	sd-uhs-sdr12;
	mmc-ddr-1_8v;
	mmc-hs200-1_8v;
	nvidia,cd-wakeup-capable;
	nvidia,update-pinctrl-settings;
	nvidia,pmc-wakeup = <&tegra_pmc PMC_WAKE_TYPE_GPIO 35
		PMC_TRIGGER_TYPE_NONE>;
	uhs-mask = <0xc>;
	no-sdio;
	no-mmc;
	disable-wp;
	vmmc-always-on;
	status = "okay";
};

I compile the dtb and continue the same problem.

27

The parameters I share to you is called “nvidia,vmmc-always-on”, not only vmmc-always-on.

28

I fixed it… the SD_VCC_EN is connected to the PIN 211 GPIO09.

30

Is it working now?

31

Yes !! Thanks Wayne! The nvidia,vmmc-always-on solved the problem.

1 Like
33

I have no problem writing to the external sdcard, and I will report this error when reading data. Sometimes the documents are incomplete

[  153.184384] mmc1: Data CRC error
[  153.187611] sdhci: =========== REGISTER DUMP (mmc1)===========
[  153.193432] sdhci: Sys addr: 0x00000400 | Version:  0x00000303
[  153.199251] sdhci: Blk size: 0x00007200 | Blk cnt:  0x0000004f
[  153.205070] sdhci: Argument: 0x02214ff8 | Trn mode: 0x0000003b
[  153.210889] sdhci: Present:  0x01fb0000 | Host ctl: 0x00000013
[  153.216709] sdhci: Power:    0x00000001 | Blk gap:  0x00000000
[  153.222529] sdhci: Wake-up:  0x00000000 | Clock:    0x00000007
[  153.228349] sdhci: Timeout:  0x0000000e | Int stat: 0x00000000
[  153.234170] sdhci: Int enab: 0x02ff100b | Sig enab: 0x02fc100b
[  153.239990] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[  153.245811] sdhci: Caps:     0x376cd08c | Caps_1:   0x10006f73
[  153.251631] sdhci: Cmd:      0x0000123a | Max curr: 0x00000000
[  153.257451] sdhci: Host ctl2: 0x00003000
[  153.261370] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000ffefe480
[  153.267912] sdhci: ===========================================
[  153.273935] mmcblk1: error -110 sending stop command, original cmd response 0x900, card status 0x400900
[  153.273940] mmcblk1: error -84 transferring data, sector 35737592, nr 1024, cmd response 0x900, card status 0x0
[  153.284171] tegradc tegradc.0: blank - powerdown
[  153.346583] extcon-disp-state extcon:disp-state: cable 47 state 0
[  153.346587] Extcon AUX1(HDMI) disable
[  153.366918] tegradc tegradc.0: unblank
34

Hi 1042674499,

Please help to open a new topic with more details of your issue. Thanks