[JP36.3] AGX Orin Industrial SDcard unplug is not detected

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
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1

I’m not able to make SD card reader to detected SD cards after system is booted. Card is detected during boot-up, but after boot up I’m not able to detect is it taken off sdcard slot or not. I configured card detect pin in linux kernel device tree:

		mmc@3400000 {
			status = "okay";
			bus-width = <4>;
			cd-gpios = <&gpio TEGRA234_MAIN_GPIO(G, 7) GPIO_ACTIVE_LOW>;
			disable-wp;
		};

I tried to add G7 pin to gpio as input:

/ {
	gpio@2200000 {
		gpio-init-names = "default";
		gpio-init-0 = <&gpio_main_default>;

		gpio_main_default: default {
			gpio-input = <
				TEGRA234_MAIN_GPIO(B, 0)
				TEGRA234_MAIN_GPIO(P, 4)
				TEGRA234_MAIN_GPIO(Q, 7)
				TEGRA234_MAIN_GPIO(R, 1)
				TEGRA234_MAIN_GPIO(N, 4)
				TEGRA234_MAIN_GPIO(M, 3)
				TEGRA234_MAIN_GPIO(M, 5)
				TEGRA234_MAIN_GPIO(M, 6)
				TEGRA234_MAIN_GPIO(N, 1)
				TEGRA234_MAIN_GPIO(G, 0)
				TEGRA234_MAIN_GPIO(G, 1)
				TEGRA234_MAIN_GPIO(G, 2)
				TEGRA234_MAIN_GPIO(G, 4)
				TEGRA234_MAIN_GPIO(G, 7)
				TEGRA234_MAIN_GPIO(H, 0)
				TEGRA234_MAIN_GPIO(AC, 4)
				TEGRA234_MAIN_GPIO(AC, 5)
				TEGRA234_MAIN_GPIO(AC, 7)
				TEGRA234_MAIN_GPIO(AE, 0)
				TEGRA234_MAIN_GPIO(AE, 1)
				TEGRA234_MAIN_GPIO(K, 0)
				TEGRA234_MAIN_GPIO(K, 1)
				TEGRA234_MAIN_GPIO(L, 2)
				TEGRA234_MAIN_GPIO(L, 3)
				>;

I tested few combinations with pinmux:

			soc_gpio20_pg7 {
				nvidia,pins = "soc_gpio20_pg7";
				nvidia,function = "sdmmc1";
				nvidia,pull = <TEGRA_PIN_PULL_DOWN>;
				nvidia,tristate = <TEGRA_PIN_ENABLE>;
				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
				nvidia,lpdr = <TEGRA_PIN_DISABLE>;
			};

			soc_gpio20_pg7 {
				nvidia,pins = "soc_gpio20_pg7";
				nvidia,function = "rsvd0";
				nvidia,pull = <TEGRA_PIN_PULL_UP>;
				nvidia,tristate = <TEGRA_PIN_DISABLE>;
				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
				nvidia,lpdr = <TEGRA_PIN_DISABLE>;
			};

I tried pinmux and gpio generated from orin excel, but even with it, I’m not able to hotplug sdcard. I’m only able to detected SDcard during boot.

image
image2346×22 10.5 KB

Schematics:

image
image1097×375 44.9 KB

image
image

3

share your dmesg and the log after hotplug.

Also use /sys/kernel/debug/gpio to see if the pin statue got toggled when you hotplug the card.

4 
#Card insert
test@ubuntu:~$ sudo cat /sys/kernel/debug/gpio|grep PG.07
 gpio-390 (PG.07               |cd                  ) in  lo IRQ ACTIVE LOW
#Card pullout
test@ubuntu:~$ sudo cat /sys/kernel/debug/gpio|grep PG.07
gpio-390 (PG.07               |cd                  ) in  lo IRQ ACTIVE LOW
#Card insert 
test@ubuntu:~$ sudo cat /sys/kernel/debug/gpio|grep PG.07
gpio-390 (PG.07               |cd                  ) in  lo IRQ ACTIVE LOW

Dmesg
dmesg.log (63.2 KB)

sudo cat /sys/kernel/debug/mmc1/ios
clock:		195250195 Hz
actual clock:	195250195 Hz
vdd:		21 (3.3 ~ 3.4 V)
bus mode:	2 (push-pull)
chip select:	0 (don't care)
power mode:	2 (on)
bus width:	2 (4 bits)
timing spec:	6 (sd uhs SDR104)
signal voltage:	1 (1.80 V)
driver type:	0 (driver type B)
6

The state does not change in the whole process. Are you sure the hardware design is correct?

7

I’ve asked the electronics team to verify the schematics and hardware design. Once I receive a response from them, I’ll update you on the issue.

1 Like
8

There was some problem with HW design, they fixed it. Because of used specific SD Card slot both card_detection pins where always grounded, so state didn’t changed.

sdcard_issue
sdcard_issue872×439 53.1 KB

After HW fix:

#Card insert
wbuser@ubuntu:~$ sudo cat /sys/kernel/debug/gpio|grep PG.07
 gpio-390 (PG.07               |cd                  ) in  hi IRQ ACTIVE LOW
#Card taken out
wbuser@ubuntu:~$ sudo cat /sys/kernel/debug/gpio|grep PG.07
 gpio-390 (PG.07               |cd                  ) in  lo IRQ ACTIVE LOW
#Card insert
wbuser@ubuntu:~$ sudo cat /sys/kernel/debug/gpio|grep PG.07
 gpio-390 (PG.07               |cd                  ) in  hi IRQ ACTIVE LOW

But it didn’t detect sdcard:

sudo cat /sys/kernel/debug/mmc1/ios
clock:          0 Hz
vdd:            0 (invalid)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     0 (off)
bus width:      0 (1 bits)
timing spec:    0 (legacy)
signal voltage: 0 (3.30 V)
driver type:    0 (driver type B)
9

Then you should share dmesg again. This thing is always the most important thing…

10

dmesg_hw_fix.log (58.6 KB)

11

Just want to clarify this again.

Your card detection currently is set to low active. Are you sure this is what you want?

1 Like
12

I updated configuration after some testing and it is working fine.

kernel dts:

		mmc@3400000 {
			status = "okay";
			bus-width = <4>;
			cd-gpios = <&gpio TEGRA234_MAIN_GPIO(G, 7) GPIO_ACTIVE_HIGH>;
			disable-wp;
			cap-sd-highspeed;
		};

pinmux:

            //SD Card Chip Detect 
			soc_gpio20_pg7 {
				nvidia,pins = "soc_gpio20_pg7";
				nvidia,function = "sdmmc1";
				nvidia,pull = <TEGRA_PIN_PULL_UP>;
				nvidia,tristate = <TEGRA_PIN_DISABLE>;
				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
				nvidia,lpdr = <TEGRA_PIN_DISABLE>;
			};

sudo dmesg|grep mmc
[    4.075804] sdhci-tegra 3460000.mmc: Adding to iommu group 2
[    4.088295] mmc0: CQHCI version 5.10
[    4.101454] sdhci-tegra 3400000.mmc: Adding to iommu group 4
[    4.588821] sdhci-tegra 3400000.mmc: Got CD GPIO
[    4.605473] mmc0: SDHCI controller on 3460000.mmc [3460000.mmc] using ADMA 64-bit
[    4.639513] mmc1: SDHCI controller on 3400000.mmc [3400000.mmc] using ADMA 64-bit
[    4.715607] mmc0: Command Queue Engine enabled
[    4.715616] mmc0: new HS400 Enhanced strobe MMC card at address 0001
[    4.715895] mmcblk0: mmc0:0001 G1J38E 59.3 GiB 
[    4.720598]  mmcblk0: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 p13 p14 p15
[    4.724360] mmcblk0boot0: mmc0:0001 G1J38E 31.5 MiB 
[    4.724826] mmcblk0boot1: mmc0:0001 G1J38E 31.5 MiB 
[    4.725263] mmcblk0rpmb: mmc0:0001 G1J38E 4.00 MiB, chardev (511:0)
[    4.886080] mmc1: new ultra high speed SDR104 SDXC card at address aaaa
[    4.886312] mmcblk1: mmc1:aaaa SD01T 954 GiB 
[    4.893913]  mmcblk1: p1
[    8.578072] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null). Quota mode: none.
[    9.399383] EXT4-fs (mmcblk0p1): re-mounted. Opts: (null). Quota mode: none.
[   74.504503] mmc1: card aaaa removed
[  122.826585] mmc1: new ultra high speed SDR104 SDXC card at address aaaa
[  122.827359] mmcblk1: mmc1:aaaa SD01T 954 GiB 
[  122.833469]  mmcblk1: p1
[  237.311282] mmc1: card aaaa removed
[  240.312326] mmc1: error -110 whilst initialising SD card
[  247.975036] mmc1: error -110 whilst initialising SD card
[  264.105695] mmc1: new ultra high speed SDR104 SDXC card at address aaaa
[  264.106520] mmcblk1: mmc1:aaaa SD01T 954 GiB 
[  264.113453]  mmcblk1: p1
1 Like