When use I2c ,kernel panic

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

when I use i2c tool, kernel panic

he@tegra-ubuntu:~/Desktop$ sudo i2cdetect -r -y 3
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: [ 108.964312] Unable to handle kernel paging request at virtual address 00000000ffff0e1f
[ 108.972514] Mem abort info:
[ 108.975403] ESR = 0x96000004
[ 108.978552] EC = 0x25: DABT (current EL), IL = 32 bits
[ 108.984025] SET = 0, FnV = 0
[ 108.987173] EA = 0, S1PTW = 0
[ 108.990407] Data abort info:
[ 108.993369] ISV = 0, ISS = 0x00000004
[ 108.997317] CM = 0, WnR = 0
[ 109.000379] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000146b8f000
[ 109.007009] [00000000ffff0e1f] pgd=0000000000000000, p4d=0000000000000000
[ 109.014005] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[ 109.019734] Modules linked in: nvidia_modeset(OE) fuse(E) lzo_rle(E) lzo_compress(E) zram(E) ramoops(E) reed_solomon(E) loop(E) aes_ce_blk(E) crypto_simd(E) cryptd(E) snd_soc_tegra186_dspk(E) snd_soc_tegra210_ope(E) snd_soc_tegra186_asrc(E) aes_ce_cipher(E) snd_soc_tegra210_iqc(E) ghash_ce(E) snd_soc_tegra186_arad(E) snd_soc_tegra210_mvc(E) snd_soc_tegra210_dmic(E) snd_soc_tegra210_afc(E) sha2_ce(E) input_leds(E) snd_soc_tegra210_adx(E) snd_soc_tegra210_admaif(E) snd_soc_tegra210_adsp(E) snd_soc_tegra210_amx(E) sha256_arm64(E) snd_soc_tegra210_mixer(E) snd_soc_tegra210_i2s(E) snd_soc_tegra210_sfc(E) snd_soc_tegra_pcm(E) sha1_ce(E) snd_soc_tegra_machine_driver(E) snd_soc_tegra_utils(E) snd_hda_codec_hdmi(E) ofpart(E) cmdlinepart(E) nvadsp(E) snd_soc_spdif_tx(E) snd_soc_simple_card_utils(E) snd_hda_tegra(E) snd_soc_tegra210_ahub(E) nct1008(E) qspi_mtd(E) snd_hda_codec(E) userspace_alert(E) tegra_bpmp_thermal(E) snd_hda_core(E) tegra210_adma(E) mtd(E) spi_tegra114(E) nvidia(OE) ina3221(E)
[ 109.019825] pwm_fan(E) binfmt_misc(E) nvgpu(E) nvmap(E) ip_tables(E) x_tables(E)
[ 109.119517] CPU: 5 PID: 2291 Comm: i2cdetect Tainted: G OE 5.10.104-tegra #204
[ 109.128207] Hardware name: /, BIOS 1.0-d7fb19b 08/10/2022
[ 109.133846] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=–)
[ 109.140042] pc : tegra_prod_set_tuple+0x3c/0x90
[ 109.144709] lr : tegra_prod_set_tuple+0x24/0x90
[ 109.149373] sp : ffff80001602b940
[ 109.152784] x29: ffff80001602b940 x28: ffff80001602bbd0
[ 109.158252] x27: ffffbe7db07e8900 x26: 00000000ffff44da
[ 109.163719] x25: ffff8000146e1000 x24: 000000000000008d
[ 109.169186] x23: 0000000000000004 x22: ffff0e1f0638d4e0
[ 109.174652] x21: ffff0e1f0638d4e0 x20: 00000000af4a7e40
[ 109.180116] x19: ffff0e1f063df110 x18: 0000000000000000
[ 109.185584] x17: 0000000000000000 x16: 0000000000000000
[ 109.191051] x15: 0000fffff7431758 x14: 0000000000000000
[ 109.196516] x13: 0000000000000000 x12: 0000000000000000
[ 109.201983] x11: 0000000000000040 x10: ffffbe7db0877a80
[ 109.207450] x9 : 0000000000000008 x8 : 0000000000000008
[ 109.212917] x7 : ffffbe7dafdb0ea8 x6 : 0000000000000020
[ 109.218384] x5 : 0000000000000020 x4 : 0000000000000005
[ 109.223851] x3 : 00000000ffff0e1f x2 : 00000000ffff0e1f
[ 109.229318] x1 : ffff0e1f063df110 x0 : 00000000063df108
[ 109.234786] Call trace:
[ 109.237302] tegra_prod_set_tuple+0x3c/0x90
[ 109.241607] tegra_prod_set.part.0+0x58/0x80
[ 109.246008] tegra_prod_set_by_name+0x78/0xb0
[ 109.250494] tegra_i2c_config_prod_settings+0x70/0xb0
[ 109.255694] tegra_i2c_init+0xd0/0x320
[ 109.259555] tegra_i2c_xfer_msg.part.0+0x450/0x6c0
[ 109.264488] tegra_i2c_xfer+0x80/0x2c0
[ 109.268349] __i2c_transfer+0x14c/0x680
[ 109.272296] i2c_smbus_xfer_emulated+0xe0/0x660
[ 109.276961] __i2c_smbus_xfer+0x11c/0x530
[ 109.281088] i2c_smbus_xfer+0x80/0x120
[ 109.284949] i2cdev_ioctl_smbus+0x104/0x370
[ 109.289254] i2cdev_ioctl+0x190/0x400
[ 109.293026] __arm64_sys_ioctl+0xa8/0xf0
[ 109.297064] el0_svc_common.constprop.0+0x7c/0x1c0
[ 109.302000] do_el0_svc+0x34/0xa0
[ 109.305417] el0_svc+0x1c/0x30
[ 109.308565] el0_sync_handler+0xa8/0xb0
[ 109.312514] el0_sync+0x16c/0x180
[ 109.315928] Code: b40002f3 29400a60 f8607aa3 8b020063 (b9400063)
[ 109.322210] —[ end trace 57a40244221cb9ac ]—
[ 109.333473] Kernel panic - not syncing: Oops: Fatal exception
[ 109.339388] SMP: stopping secondary CPUs
[ 109.343729] Kernel Offset: 0x3e7d9eb30000 from 0xffff800010000000
[ 109.350000] PHYS_OFFSET: 0xfffff1e200000000
[ 109.354301] CPU features: 0x0040006,4a80aa38
[ 109.358700] Memory Limit: none
[ 109.368286] —[ end Kernel panic - not syncing: Oops: Fatal exception ]—

3

Did you connect device to this bus? Any customized like kernel/device tree?

4

yes, I connect device to this bus, I dont customized this i2c, I just use it.
I found that if I read or write on a not exist i2c addr on this i2c bus, it may be cause kernel panic, other i2c bus is ok.

5

Which pin connected to?

6

J52 J53 PN3 and PN4 for I2C3 i2c@3190000

7

custom board

9

Could you probe to check if any wave form without any device connect to this bus.

Thanks

12

Hi,
You may need to configure the J52/J53 by PINMUX spreadsheet to generate the dtb to enable it as i2c4.

13 
		dp_aux_ch1_p_pn3 {
			nvidia,pins = "dp_aux_ch1_p_pn3";
			nvidia,function = "i2c4";
			nvidia,pull = <TEGRA_PIN_PULL_NONE>;
			nvidia,tristate = <TEGRA_PIN_DISABLE>;
			nvidia,enable-input = <TEGRA_PIN_ENABLE>;
			nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>;
			nvidia,lpdr = <TEGRA_PIN_DISABLE>;
		};

		dp_aux_ch1_n_pn4 {
			nvidia,pins = "dp_aux_ch1_n_pn4";
			nvidia,function = "i2c4";
			nvidia,pull = <TEGRA_PIN_PULL_NONE>;
			nvidia,tristate = <TEGRA_PIN_DISABLE>;
			nvidia,enable-input = <TEGRA_PIN_ENABLE>;
			nvidia,io-high-voltage = <TEGRA_PIN_ENABLE>;
			nvidia,lpdr = <TEGRA_PIN_DISABLE>;
		};
14

I’m closing this topic due to there is no update from you for a period, assuming this issue was resolved.
If still need the support, please open a new topic. Thanks

Is this still an issue to support? Any result can be shared? Thanks