TDA4VM: Linux kernel hangs after INIT process is executed

Hi,

By the logs it appears that the console uart is different on your board as compared with the sk board.

Are you using main_uart3 as the console uart?

If yes what are the bootargs that you have used ?

Best Regards,

Keerthy 

Hii Keerthy. I confirm we're using on our hardware a different serial interface, precisely main_uart3. Just as addition information let me add I'm currently using the precompiled filesystem exported in the Linux SDK as tisdk-default-image-j7-evm.tar.xz. The kernel is getting configured by U-Boot and this is the env variable I have define in teh bootloader:

=> printenv
addr_fit=0x90000000
arch=arm
args_all=setenv optargs ${optargs} earlycon=ns16550a,mmio32,0x02830000 ${mtdparts} panic=-1 nosmp init=/bin/bash
args_mmc=run finduuid;setenv bootargs console=${console} ${optargs} root=PARTUUID=${uuid} rw rootfstype=${mmcrootfstype}
args_ufs=setenv devtype scsi;setenv bootpart 1:1;run ufs_finduuid;setenv bootargs console = ${console} ${optargs}root=PARTUUID=${uuid} rw rootfstype=${scsirootfstype};setenv devtype scsi;setenv bootpart 1:1
baudrate=115200
board=sauron
board_name=sauron
boot=mmc
boot_fdt=try
boot_fit=0
boot_rprocs=if test ${dorprocboot} -eq 1 && test ${boot} = mmc; then rproc init;run boot_rprocs_mmc;fi;
boot_rprocs_mmc=env set rproc_id;env set rproc_fw;env set secure_suffix;if test ${boot_fit} -eq 1; then env set secure_suffix -sec;fi;for i in ${rproc_fw_binaries}; do if test -z "${rproc_id}" ; then env set rproc_id $i;else env set rproc_fw $i${secure_suffix};run rproc_load_and_boot_one;env set rproc_id;env set rproc_fw;fi;done
bootcmd=run findfdt; run envboot; run init_${boot}; run main_cpsw0_qsgmii_phyinit; run boot_rprocs; run get_kern_${boot}; run get_fdt_${boot}; run get_overlay_${boot}; run run_kern
bootdelay=2
bootdir=/boot
bootenvfile=uEnv.txt
bootm_size=0x10000000
bootpart=1:2
bootscript=echo Running bootscript from mmc${mmcdev} ...; source ${loadaddr}
console=ttyS5,115200n8
cpu=armv8
default_device_tree=k3-j721e-sauron.dtb
dfu_alt_info_emmc=rawemmc raw 0 0x800000 mmcpart 1;rootfs part 0 1 mmcpart 0;tiboot3.bin.raw raw 0x0 0x400 mmcpart 1;tispl.bin.raw raw 0x400 0x1000 mmcpart 1;u-boot.img.raw raw 0x1400 0x2000 mmcpart 1;u-env.raw raw 0x3400 0x100 mmcpart 1;sysfw.itb.raw raw 0x3600 0x800 mmcpart 1
dfu_alt_info_mmc=boot part 1 1;rootfs part 1 2;tiboot3.bin fat 1 1;tispl.bin fat 1 1;u-boot.img fat 1 1;uEnv.txt fat 1 1;sysfw.itb fat 1 1
dfu_alt_info_ospi=tiboot3.bin raw 0x0 0x080000;tispl.bin raw 0x080000 0x200000;u-boot.img raw 0x280000 0x400000;u-boot-env raw 0x680000 0x020000;sysfw.itb raw 0x6c0000 0x100000;rootfs raw 0x800000 0x3800000
dfu_alt_info_ram=tispl.bin ram 0x80080000 0x200000;u-boot.img ram 0x81000000 0x400000
dorprocboot=0
dtboaddr=0x89000000
envboot=mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on device ${mmcdev};if run loadbootscript; then run bootscript;else if run loadbootenv; then echo Loaded env from ${bootenvfile};run importbootenv;fi;if test -n $uenvcmd; then echo Running uenvcmd ...;run uenvcmd;fi;fi;fi;
ethaddr=24:76:25:a4:04:1e
fdt_addr_r=0x88000000
fdtaddr=0x88000000
fdtcontroladdr=fffb3c70
fdtoverlay_addr_r=0x80200000
findfdt=setenv name_fdt ${default_device_tree};if test $board_name = sauron_dbe; then setenv name_fdt k3-sauron_dbe.dtb; fi;setenv fdtfile ${name_fdt}
finduuid=part uuid ${boot} ${bootpart} uuid
get_fdt_mmc=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${name_fdt}
get_fdt_ufs=load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
get_fit_mmc=load mmc ${bootpart} ${addr_fit} ${bootdir}/${name_fit}
get_kern_mmc=load mmc ${bootpart} ${loadaddr} ${bootdir}/${name_kern}
get_kern_ufs=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${name_kern}
get_overlay_mmc=fdt address ${fdtaddr};fdt resize 0x100000;for overlay in $name_overlays;do;load mmc ${bootpart} ${dtboaddr} ${bootdir}/${overlay} && fdt apply ${dtboaddr};done;
get_overlay_ufs=fdt address ${fdtaddr};fdt resize 0x100000;for overlay in $name_overlays;do;load scsi ${bootpart} ${dtboaddr} ${bootdir}/${overlay} && fdt apply ${dtboaddr};done;
get_overlaystring=for overlay in $name_overlays;do;setenv overlaystring ${overlaystring}'#'${overlay};done;
importbootenv=echo Importing environment from mmc${mmcdev} ...; env import -t ${loadaddr} ${filesize}
init_main_cpsw0_qsgmii_phy=gpio set gpio@22_17;gpio clear gpio@22_16
init_mmc=run args_all args_mmc
init_ufs=ufs init; scsi scan; run args_ufs
kernel_addr_r=0x82000000
loadaddr=0x82000000
loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenvfile}
loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr
loadfdt=load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}
loadimage=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${bootfile}
main_cpsw0_qsgmii_phyinit=if test test $board_name = sauron; then do_main_cpsw0_qsgmii_phyinit=1; else do_main_cpsw0_qsgmii_phyinit=0; fi;if test ${do_main_cpsw0_qsgmii_phyinit} -eq 1 && test ${dorprocboot} -eq 1 && test ${boot} = mmc; then run init_main_cpsw0_qsgmii_phy;fi;
mmcboot=mmc dev ${mmcdev}; devnum=${mmcdev}; devtype=mmc; if mmc rescan; then echo SD/MMC found on device ${mmcdev};if run loadimage; then run args_mmc; if test ${boot_fit} -eq 1; then run run_fit; else run mmcloados;fi;fi;fi;
mmcdev=1
mmcloados=if test ${boot_fdt} = yes || test ${boot_fdt} = try; then if run loadfdt; then bootz ${loadaddr} - ${fdtaddr}; else if test ${boot_fdt} = try; then bootz; else echo WARN: Cannot load the DT; fi; fi; else bootz; fi;
mmcrootfstype=ext4 rootwait
mtdids=nor0=47040000.spi.0,nor0=47034000.hyperbus
mtdparts=mtdparts=47040000.spi.0:512k(ospi.tiboot3),2m(ospi.tispl),4m(ospi.u-boot),256k(ospi.env),1m(ospi.sysfw),256k(ospi.env.backup),57088k@8m(ospi.rootfs),256k(ospi.phypattern);47034000.hyperbus:512k(hbmc.tiboot3),2m(hbmc.tispl),4m(hbmc.u-boot),256k(hbmc.env),1m(hbmc.sysfw),-@8m(hbmc.rootfs)
name_fit=fitImage
name_kern=Image
partitions=uuid_disk=${uuid_gpt_disk};name=rootfs,start=0,size=-,uuid=${uuid_gpt_rootfs}
pxefile_addr_r=0x80100000
ramdisk_addr_r=0x88080000
rd_spec=-
rdaddr=0x88080000
rproc_fw_binaries=2 /lib/firmware/j7-main-r5f0_0-fw 3 /lib/firmware/j7-main-r5f0_1-fw 4 /lib/firmware/j7-main-r5f1_0-fw 5 /lib/firmware/j7-main-r5f1_1-fw 6 /lib/firmware/j7-c66_0-fw 7 /lib/firmware/j7-c66_1-fw 8 /lib/firmware/j7-c71_0-fw
rproc_load_and_boot_one=if load mmc ${bootpart} $loadaddr ${rproc_fw}; then if rproc load ${rproc_id} ${loadaddr} ${filesize}; then rproc start ${rproc_id};fi;fi
run_fit=bootm ${addr_fit}#${fdtfile}${overlaystring}
run_kern=booti ${loadaddr} ${rd_spec} ${fdtaddr}
scriptaddr=0x80000000
scsirootfstype=ext4 rootwait
soc=k3
stderr=serial@2830000
stdin=serial@2830000
stdout=serial@2830000
ufs_finduuid=part uuid scsi ${bootpart} uuid
update_to_fit=setenv loadaddr ${addr_fit}; setenv bootfile ${name_fit}
vendor=inxpect

let me add also teh DT I'm currently using:

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/
*/

/dts-v1/;

#include "k3-j721e.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/net/ti-dp83867.h>

/ {
compatible = "ti,j721e-sk", "ti,j721e";
model = "Texas Instruments J721E SK";

chosen {
stdout-path = "serial5:115200n8";
bootargs = "console=ttyS5,115200n8 earlycon=ns16550a,mmio32,0x02830000 nosmp panic=-1 init=/bin/bash";
};

memory@80000000 {
device_type = "memory";
/* 4G RAM */
reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
<0x00000008 0x80000000 0x00000000 0x80000000>;
};

reserved_memory: reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;

secure_ddr: optee@9e800000 {
reg = <0x00 0x9e800000 0x00 0x01800000>;
alignment = <0x1000>;
no-map;
};

mcu_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa0000000 0x00 0x100000>;
no-map;
};

mcu_r5fss0_core0_memory_region: r5f-memory@a0100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa0100000 0x00 0xf00000>;
no-map;
};

mcu_r5fss0_core1_dma_memory_region: r5f-dma-memory@a1000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa1000000 0x00 0x100000>;
no-map;
};

mcu_r5fss0_core1_memory_region: r5f-memory@a1100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa1100000 0x00 0xf00000>;
no-map;
};

main_r5fss0_core0_dma_memory_region: r5f-dma-memory@a2000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa2000000 0x00 0x100000>;
no-map;
};

main_r5fss0_core0_memory_region: r5f-memory@a2100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa2100000 0x00 0xf00000>;
no-map;
};

main_r5fss0_core1_dma_memory_region: r5f-dma-memory@a3000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa3000000 0x00 0x100000>;
no-map;
};

main_r5fss0_core1_memory_region: r5f-memory@a3100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa3100000 0x00 0xf00000>;
no-map;
};

main_r5fss1_core0_dma_memory_region: r5f-dma-memory@a4000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa4000000 0x00 0x100000>;
no-map;
};

main_r5fss1_core0_memory_region: r5f-memory@a4100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa4100000 0x00 0xf00000>;
no-map;
};

main_r5fss1_core1_dma_memory_region: r5f-dma-memory@a5000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa5000000 0x00 0x100000>;
no-map;
};

main_r5fss1_core1_memory_region: r5f-memory@a5100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa5100000 0x00 0xf00000>;
no-map;
};

c66_1_dma_memory_region: c66-dma-memory@a6000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa6000000 0x00 0x100000>;
no-map;
};

c66_0_memory_region: c66-memory@a6100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa6100000 0x00 0xf00000>;
no-map;
};

c66_0_dma_memory_region: c66-dma-memory@a7000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa7000000 0x00 0x100000>;
no-map;
};

c66_1_memory_region: c66-memory@a7100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa7100000 0x00 0xf00000>;
no-map;
};

c71_0_dma_memory_region: c71-dma-memory@a8000000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa8000000 0x00 0x100000>;
no-map;
};

c71_0_memory_region: c71-memory@a8100000 {
compatible = "shared-dma-pool";
reg = <0x00 0xa8100000 0x00 0xf00000>;
no-map;
};

rtos_ipc_memory_region: ipc-memories@aa000000 {
reg = <0x00 0xaa000000 0x00 0x01c00000>;
alignment = <0x1000>;
no-map;
};
};

vusb_main: fixedregulator-vusb-main5v0 {
/* USB MAIN INPUT 5V DC */
compatible = "regulator-fixed";
regulator-name = "vusb-main5v0";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
regulator-boot-on;
};

vsys_3v3: fixedregulator-vsys3v3 {
/* Output of LM5141 */
compatible = "regulator-fixed";
regulator-name = "vsys_3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
vin-supply = <&vusb_main>;
regulator-always-on;
regulator-boot-on;
};

vdd_mmc1: fixedregulator-sd {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&vdd_mmc1_en_pins_default>;
regulator-name = "vdd_mmc1";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
enable-active-high;
vin-supply = <&vsys_3v3>;
gpio = <&wkup_gpio0 8 GPIO_ACTIVE_HIGH>;
};

vdd_sd_dv_alt: gpio-regulator-tps659411 {
compatible = "regulator-gpio";
pinctrl-names = "default";
pinctrl-0 = <&vdd_sd_dv_alt_pins_default>;
regulator-name = "tps659411";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
vin-supply = <&vsys_3v3>;
gpios = <&wkup_gpio0 9 GPIO_ACTIVE_HIGH>;
states = <1800000 0x0>,
<3300000 0x1>;
};

transceiver1: can-phy0 {
status = "disabled";
};

transceiver2: can-phy1 {
status = "disabled";
};

transceiver3: can-phy2 {
status = "disabled";
};

transceiver4: can-phy3 {
status = "disabled";
};

dp_pwr_3v3: fixedregulator-dp-prw {
compatible = "regulator-fixed";
regulator-name = "dp-pwr";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
pinctrl-names = "default";
pinctrl-0 = <&dp_pwr_en_pins_default>;
gpio = <&main_gpio0 111 0>; /* DP0_3V3 _EN */
enable-active-high;
};

dp0: connector {
status = "disabled";
};

hdmi-connector {
status = "disabled";
};

dvi-bridge {
status = "disabled";
};
};

&main_pmx0 {
main_mmc1_pins_default: main-mmc1-pins-default {
pinctrl-single,pins = <
J721E_IOPAD(0x254, PIN_INPUT, 0) /* (R29) MMC1_CMD */
J721E_IOPAD(0x250, PIN_INPUT, 0) /* (P25) MMC1_CLK */
J721E_IOPAD(0x2ac, PIN_INPUT, 0) /* (P25) MMC1_CLKLB */
J721E_IOPAD(0x24c, PIN_INPUT, 0) /* (R24) MMC1_DAT0 */
J721E_IOPAD(0x248, PIN_INPUT, 0) /* (P24) MMC1_DAT1 */
J721E_IOPAD(0x244, PIN_INPUT, 0) /* (R25) MMC1_DAT2 */
J721E_IOPAD(0x240, PIN_INPUT, 0) /* (R26) MMC1_DAT3 */
J721E_IOPAD(0x258, PIN_INPUT, 0) /* (P23) MMC1_SDCD */
>;
};

main_uart3_pins_default: main-uart0-pins-default {
pinctrl-single,pins = <
J721E_IOPAD(0xb8, PIN_INPUT, 8) /* (AE27) PRG0_PRU0_GPO2.UART3_RXD */
J721E_IOPAD(0xbc, PIN_OUTPUT, 8) /* (AD26) PRG0_PRU0_GPO3.UART3_TXD */
>;
};

dp_pwr_en_pins_default: dp-pwr-en-pins-default {
pinctrl-single,pins = <
J721E_IOPAD(0x1c0, PIN_INPUT, 7) /* (AA2) SPI0_CS0.GPIO0_111 */
>;
};

dss_vout0_pins_default: dss-vout0-pins-default {
pinctrl-single,pins = <
J721E_IOPAD(0x58, PIN_OUTPUT, 10) /* (AE22) PRG1_PRU1_GPO0.VOUT0_DATA0 */
J721E_IOPAD(0x5c, PIN_OUTPUT, 10) /* (AG23) PRG1_PRU1_GPO1.VOUT0_DATA1 */
J721E_IOPAD(0x60, PIN_OUTPUT, 10) /* (AF23) PRG1_PRU1_GPO2.VOUT0_DATA2 */
J721E_IOPAD(0x64, PIN_OUTPUT, 10) /* (AD23) PRG1_PRU1_GPO3.VOUT0_DATA3 */
J721E_IOPAD(0x68, PIN_OUTPUT, 10) /* (AH24) PRG1_PRU1_GPO4.VOUT0_DATA4 */
J721E_IOPAD(0x6c, PIN_OUTPUT, 10) /* (AG21) PRG1_PRU1_GPO5.VOUT0_DATA5 */
J721E_IOPAD(0x70, PIN_OUTPUT, 10) /* (AE23) PRG1_PRU1_GPO6.VOUT0_DATA6 */
J721E_IOPAD(0x74, PIN_OUTPUT, 10) /* (AC21) PRG1_PRU1_GPO7.VOUT0_DATA7 */
J721E_IOPAD(0x78, PIN_OUTPUT, 10) /* (Y23) PRG1_PRU1_GPO8.VOUT0_DATA8 */
J721E_IOPAD(0x7c, PIN_OUTPUT, 10) /* (AF21) PRG1_PRU1_GPO9.VOUT0_DATA9 */
J721E_IOPAD(0x80, PIN_OUTPUT, 10) /* (AB23) PRG1_PRU1_GPO10.VOUT0_DATA10 */
J721E_IOPAD(0x84, PIN_OUTPUT, 10) /* (AJ25) PRG1_PRU1_GPO11.VOUT0_DATA11 */
J721E_IOPAD(0x88, PIN_OUTPUT, 10) /* (AH25) PRG1_PRU1_GPO12.VOUT0_DATA12 */
J721E_IOPAD(0x8c, PIN_OUTPUT, 10) /* (AG25) PRG1_PRU1_GPO13.VOUT0_DATA13 */
J721E_IOPAD(0x90, PIN_OUTPUT, 10) /* (AH26) PRG1_PRU1_GPO14.VOUT0_DATA14 */
J721E_IOPAD(0x94, PIN_OUTPUT, 10) /* (AJ27) PRG1_PRU1_GPO15.VOUT0_DATA15 */
J721E_IOPAD(0x30, PIN_OUTPUT, 10) /* (AF24) PRG1_PRU0_GPO11.VOUT0_DATA16 */
J721E_IOPAD(0x34, PIN_OUTPUT, 10) /* (AJ24) PRG1_PRU0_GPO12.VOUT0_DATA17 */
J721E_IOPAD(0x38, PIN_OUTPUT, 10) /* (AG24) PRG1_PRU0_GPO13.VOUT0_DATA18 */
J721E_IOPAD(0x3c, PIN_OUTPUT, 10) /* (AD24) PRG1_PRU0_GPO14.VOUT0_DATA19 */
J721E_IOPAD(0x40, PIN_OUTPUT, 10) /* (AC24) PRG1_PRU0_GPO15.VOUT0_DATA20 */
J721E_IOPAD(0x44, PIN_OUTPUT, 10) /* (AE24) PRG1_PRU0_GPO16.VOUT0_DATA21 */
J721E_IOPAD(0x24, PIN_OUTPUT, 10) /* (AJ20) PRG1_PRU0_GPO8.VOUT0_DATA22 */
J721E_IOPAD(0x28, PIN_OUTPUT, 10) /* (AG20) PRG1_PRU0_GPO9.VOUT0_DATA23 */
J721E_IOPAD(0x9c, PIN_OUTPUT, 10) /* (AC22) PRG1_PRU1_GPO17.VOUT0_DE */
J721E_IOPAD(0x98, PIN_OUTPUT, 10) /* (AJ26) PRG1_PRU1_GPO16.VOUT0_HSYNC */
J721E_IOPAD(0xa4, PIN_OUTPUT, 10) /* (AH22) PRG1_PRU1_GPO19.VOUT0_PCLK */
J721E_IOPAD(0xa0, PIN_OUTPUT, 10) /* (AJ22) PRG1_PRU1_GPO18.VOUT0_VSYNC */
>;
};
};

&wkup_pmx0 {
mcu_cpsw_pins_default: mcu-cpsw-pins-default {
pinctrl-single,pins = <
J721E_WKUP_IOPAD(0x84, PIN_INPUT, 0) /* (B24) MCU_RGMII1_RD0 */
J721E_WKUP_IOPAD(0x80, PIN_INPUT, 0) /* (A24) MCU_RGMII1_RD1 */
J721E_WKUP_IOPAD(0x7c, PIN_INPUT, 0) /* (D24) MCU_RGMII1_RD2 */
J721E_WKUP_IOPAD(0x78, PIN_INPUT, 0) /* (A25) MCU_RGMII1_RD3 */
J721E_WKUP_IOPAD(0x74, PIN_INPUT, 0) /* (C24) MCU_RGMII1_RXC */
J721E_WKUP_IOPAD(0x5c, PIN_INPUT, 0) /* (C25) MCU_RGMII1_RX_CTL */
J721E_WKUP_IOPAD(0x6c, PIN_OUTPUT, 0) /* (B25) MCU_RGMII1_TD0 */
J721E_WKUP_IOPAD(0x68, PIN_OUTPUT, 0) /* (A26) MCU_RGMII1_TD1 */
J721E_WKUP_IOPAD(0x64, PIN_OUTPUT, 0) /* (A27) MCU_RGMII1_TD2 */
J721E_WKUP_IOPAD(0x60, PIN_OUTPUT, 0) /* (A28) MCU_RGMII1_TD3 */
J721E_WKUP_IOPAD(0x70, PIN_OUTPUT, 0) /* (B26) MCU_RGMII1_TXC */
J721E_WKUP_IOPAD(0x58, PIN_OUTPUT, 0) /* (B27) MCU_RGMII1_TX_CTL */
>;
};

mcu_mdio_pins_default: mcu-mdio1-pins-default {
pinctrl-single,pins = <
J721E_WKUP_IOPAD(0x8c, PIN_OUTPUT, 0) /* (F23) MCU_MDIO0_MDC */
J721E_WKUP_IOPAD(0x88, PIN_INPUT, 0) /* (E23) MCU_MDIO0_MDIO */
>;
};

vdd_mmc1_en_pins_default: vdd-mmc1-en-pins-default {
pinctrl-single,pins = <
J721E_WKUP_IOPAD(0xd0, PIN_OUTPUT, 7) /* (G27) WKUP_GPIO0_8 */
>;
};

vdd_sd_dv_alt_pins_default: vdd-sd-dv-alt-pins-default {
pinctrl-single,pins = <
J721E_WKUP_IOPAD(0xd4, PIN_OUTPUT, 7) /* (G26) WKUP_GPIO0_9 */
>;
};
};

&wkup_uart0 {
/* Wakeup UART is used by System firmware */
status = "reserved";
};

&main_uart0 {
status = "reserved ";
};

&main_uart2 {
/* Brought out on RPi header */
status = "disabled";
};

&main_uart3 {
pinctrl-names = "default";
pinctrl-0 = <&main_uart3_pins_default>;
};

&main_uart4 {
status = "disabled";
};

&main_uart5 {
/* UART not brought out */
status = "disabled";
};

&main_uart6 {
/* UART not brought out */
status = "disabled";
};

&main_uart7 {
/* UART not brought out */
status = "disabled";
};

&main_uart8 {
/* UART not brought out */
status = "disabled";
};

&main_uart9 {
/* Brought out on M.2 E Key */
status = "disabled";
};

&main_sdhci0 {
/* Unused */
status = "disabled";
};

&main_sdhci1 {
/* SD Card */
vmmc-supply = <&vdd_mmc1>;
vqmmc-supply = <&vdd_sd_dv_alt>;
pinctrl-names = "default";
pinctrl-0 = <&main_mmc1_pins_default>;
ti,driver-strength-ohm = <50>;
disable-wp;
};

&main_sdhci2 {
/* Unused */
status = "disabled";
};

&ospi0 {
status = "disabled";
};

&ospi1 {
/* Unused */
status = "disabled";
};

&main_i2c0 {
status = "disabled";
};

&main_i2c1 {
status = "disabled";
};

&main_i2c2 {
/* Unused */
status = "disabled";
};

&main_i2c3 {
status = "disabled";
};

&main_i2c4 {
/* Unused */
status = "disabled";
};

&main_i2c5 {
status = "disabled";
};

&main_i2c6 {
/* Unused */
status = "disabled";
};

&main_gpio2 {
status = "disabled";
};

&main_gpio3 {
status = "disabled";
};

&main_gpio4 {
status = "disabled";
};

&main_gpio5 {
status = "disabled";
};

&main_gpio6 {
status = "disabled";
};

&main_gpio7 {
status = "disabled";
};

&wkup_gpio1 {
status = "disabled";
};

&usb_serdes_mux {
status = "disabled";
};

&serdes_ln_ctrl {
status = "disabled";
};

&serdes_wiz0 {
status = "disabled";
};

&serdes_wiz1 {
status = "disabled";
};

&serdes_wiz2 {
status = "disabled";
};

&serdes_wiz3 {
status = "disabled";
};

&serdes3 {
status = "disabled";
};

&usbss0 {
status = "disabled";
};

&usb0 {
status = "disabled";
};

&serdes2 {
status = "disabled";
};

&usbss1 {
status = "disabled";
};

&usb1 {
status = "disabled";
};

&tscadc0 {
/* Unused */
status = "disabled";
};

&tscadc1 {
/* Unused */
status = "disabled";
};

&mcu_cpsw {
pinctrl-names = "default";
pinctrl-0 = <&mcu_cpsw_pins_default &mcu_mdio_pins_default>;
};

&davinci_mdio {
phy0: ethernet-phy@0 {
reg = <0>;
ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_00_NS>;
ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
};
};

&cpsw_port1 {
phy-mode = "rgmii-rxid";
phy-handle = <&phy0>;
};

&dss {
status = "disabled";
};

&dss_ports {
status = "disabled";
};

&mhdp {
status = "disabled";
};

&dp0_ports {
status = "disabled";
};

&mcasp0 {
/* Unused */
status = "disabled";
};

&mcasp1 {
/* Unused */
status = "disabled";
};

&mcasp2 {
/* Unused */
status = "disabled";
};

&mcasp3 {
/* Unused */
status = "disabled";
};

&mcasp4 {
/* Unused */
status = "disabled";
};

&mcasp5 {
/* Unused */
status = "disabled";
};

&mcasp6 {
/* Brought out on RPi header */
status = "disabled";
};

&mcasp7 {
/* Unused */
status = "disabled";
};

&mcasp8 {
/* Unused */
status = "disabled";
};

&mcasp9 {
/* Unused */
status = "disabled";
};

&mcasp10 {
/* Unused */
status = "disabled";
};

&mcasp11 {
/* Brought out on M.2 E Key */
status = "disabled";
};

&serdes0 {
status = "disabled";
};

&serdes1 {
status = "disabled";
};

&pcie0_rc {
status = "disabled";
};

&pcie1_rc {
status = "disabled";
};

&pcie2_rc {
/* Unused */
status = "disabled";
};

&pcie0_ep {
status = "disabled";
};

&pcie1_ep {
status = "disabled";
};

&pcie2_ep {
/* Unused */
status = "disabled";
};

&pcie3_rc {
/* Unused */
status = "disabled";
};

&pcie3_ep {
/* Unused */
status = "disabled";
};

&mcu_mcan0 {
status = "disabled";
};

&mcu_mcan1 {
status = "disabled";
};

&main_mcan0 {
status = "disabled";
};

&main_mcan1 {
status = "disabled";
};

&main_mcan2 {
status = "disabled";
};

&main_mcan3 {
status = "disabled";
};

&main_mcan4 {
status = "disabled";
};

&main_mcan5 {
status = "disabled";
};

&main_mcan6 {
status = "disabled";
};

&main_mcan7 {
status = "disabled";
};

&main_mcan8 {
status = "disabled";
};

&main_mcan9 {
status = "disabled";
};

&main_mcan10 {
status = "disabled";
};

&main_mcan11 {
status = "disabled";
};

&main_mcan12 {
status = "disabled";
};

&main_mcan13 {
status = "disabled";
};

&ufs_wrapper {
status = "disabled";
};

&main_r5fss0_core0{
status = "disabled";
};

&mailbox0_cluster0 {
interrupts = <436>;

mbox_mcu_r5fss0_core0: mbox-mcu-r5fss0-core0 {
ti,mbox-rx = <0 0 0>;
ti,mbox-tx = <1 0 0>;
};

mbox_mcu_r5fss0_core1: mbox-mcu-r5fss0-core1 {
ti,mbox-rx = <2 0 0>;
ti,mbox-tx = <3 0 0>;
};
};

&mailbox0_cluster1 {
interrupts = <432>;

mbox_main_r5fss0_core0: mbox-main-r5fss0-core0 {
ti,mbox-rx = <0 0 0>;
ti,mbox-tx = <1 0 0>;
};

mbox_main_r5fss0_core1: mbox-main-r5fss0-core1 {
ti,mbox-rx = <2 0 0>;
ti,mbox-tx = <3 0 0>;
};
};

&mailbox0_cluster2 {
interrupts = <428>;

mbox_main_r5fss1_core0: mbox-main-r5fss1-core0 {
ti,mbox-rx = <0 0 0>;
ti,mbox-tx = <1 0 0>;
};

mbox_main_r5fss1_core1: mbox-main-r5fss1-core1 {
ti,mbox-rx = <2 0 0>;
ti,mbox-tx = <3 0 0>;
};
};

&mailbox0_cluster3 {
interrupts = <424>;

mbox_c66_0: mbox-c66-0 {
ti,mbox-rx = <0 0 0>;
ti,mbox-tx = <1 0 0>;
};

mbox_c66_1: mbox-c66-1 {
ti,mbox-rx = <2 0 0>;
ti,mbox-tx = <3 0 0>;
};
};

&mailbox0_cluster4 {
interrupts = <420>;

mbox_c71_0: mbox-c71-0 {
ti,mbox-rx = <0 0 0>;
ti,mbox-tx = <1 0 0>;
};
};

&mailbox0_cluster5 {
status = "disabled";
};

&mailbox0_cluster6 {
status = "disabled";
};

&mailbox0_cluster7 {
status = "disabled";
};

&mailbox0_cluster8 {
status = "disabled";
};

&mailbox0_cluster9 {
status = "disabled";
};

&mailbox0_cluster10 {
status = "disabled";
};

&mailbox0_cluster11 {
status = "disabled";
};

&mcu_r5fss0_core0 {
mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core0>;
memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
<&mcu_r5fss0_core0_memory_region>;
};

&mcu_r5fss0_core1 {
mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core1>;
memory-region = <&mcu_r5fss0_core1_dma_memory_region>,
<&mcu_r5fss0_core1_memory_region>;
};

&main_r5fss0_core0 {
mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core0>;
memory-region = <&main_r5fss0_core0_dma_memory_region>,
<&main_r5fss0_core0_memory_region>;
};

&main_r5fss0_core1 {
mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core1>;
memory-region = <&main_r5fss0_core1_dma_memory_region>,
<&main_r5fss0_core1_memory_region>;
};

&main_r5fss1_core0 {
mboxes = <&mailbox0_cluster2 &mbox_main_r5fss1_core0>;
memory-region = <&main_r5fss1_core0_dma_memory_region>,
<&main_r5fss1_core0_memory_region>;
};

&main_r5fss1_core1 {
mboxes = <&mailbox0_cluster2 &mbox_main_r5fss1_core1>;
memory-region = <&main_r5fss1_core1_dma_memory_region>,
<&main_r5fss1_core1_memory_region>;
};

&c66_0 {
mboxes = <&mailbox0_cluster3 &mbox_c66_0>;
memory-region = <&c66_0_dma_memory_region>,
<&c66_0_memory_region>;
};

&c66_1 {
mboxes = <&mailbox0_cluster3 &mbox_c66_1>;
memory-region = <&c66_1_dma_memory_region>,
<&c66_1_memory_region>;
};

&c71_0 {
mboxes = <&mailbox0_cluster4 &mbox_c71_0>;
memory-region = <&c71_0_dma_memory_region>,
<&c71_0_memory_region>;
};

&main_ehrpwm0 {
status = "disabled";
};

&main_ehrpwm1 {
status = "disabled";
};

&main_ehrpwm2 {
status = "disabled";
};

&main_ehrpwm3 {
status = "disabled";
};

&main_ehrpwm4 {
status = "disabled";
};

&main_ehrpwm5 {
status = "disabled";
};

&main_gpio0 {
status = "disabled";
};

&main_gpio1 {
status = "disabled";
};

Hi,

Are you able to press enter and check if RX is working during the hang?

- Keerthy

Hi Keerthy, after the last trace I post nothing else is printed and no echo from the keyboard is displayed on the console. I'm not able to understand if the serial is blocked or the kernel is hang. But no pèanic condition is generated. 

It seems like the file system does not have the main_uart3 tty enabled and so you are not seeing prints once the filesystem is mounted.

Best  Regards,

Keerthy 

Keerthy thanks. In fact this is what I see about enabled tty

echo $(grep -v "unknown" "/proc/tty/driver/serial")
serinfo:1.0 driver revision: 1: uart:8250 mmio:0x40A00000 irq:15 tx:0 rx:0 CTS|DSR 2: uart:8250 mmio:0x02800000 irq:29 tx:124886 rx:4431 RTS|DTR 3: uart:8250 mmio:0x02810000 irq:30 tx:0 rx:0 DSR 6: uart:8250 mmio:0x02840000 irq:31 tx:0 rx:0 DSR

Claerly tty for main_uart3 is not there. How can I add my serial tty in the FS?

BTW I don't think this is the only problem. The traces of a working scenario shows this:

INIT: version 2.96 booting
[ 5.630980] *************** ext4_remount
[ 5.634993] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
hwclock: can't open '/dev/misc/rtc': No such file or directory
Tue May 2 15:54:43 UTC 2023
hwclock: can't open '/dev/misc/rtc': No such file or directory
[ 5.739154] random: dd: uninitialized urandom read (512 bytes read)
INIT: Entering runlevel: 5
Configuring network interfaces... [ 5.800795] am65-cpsw-nuss 46000000.ethernet eth0: PHY [46000f00.mdio:00] driver [TI DP83867] (irq=POLL)
[ 5.810273] am65-cpsw-nuss 46000000.ethernet eth0: configuring for phy/rgmii-rxid link mode
udhcpc: started, v1.31.1
udhcpc: sending discover
udhcpc: sending discover
udhcpc: sending discover
udhcpc: no lease, forking to background
done.
hwclock: can't open '/dev/misc/rtc': No such file or directory
Starting syslogd/klogd: done

_____ _____ _ _
| _ |___ ___ ___ ___ | _ |___ ___ |_|___ ___| |_
| | _| .'| . | . | | __| _| . | | | -_| _| _|
|__|__|_| |__,|_ |___| |__| |_| |___|_| |___|___|_|
|___| |___|

Arago Project j7-evm /dev/ttyS1

Arago 2021.09 j7-evm /dev/ttyS1

j7-evm login: root

On my hardware instead the last trace is 

INIT: version 2.96 booting

It seems that ext4 is not getting remounted. At least I don't see relevant traces. I giess this operation is still done in kernel space so I should see traces