AM67A: LPDDR4 bring up

Tony Tang

Part Number: AM67A
Other Parts Discussed in Thread: AM67, SYSCONFIG

Tool/software:

customer board boot from DFU can sometimes download tispl.bin, sometime can't finish tispl.bin downloading.

I think it is DDR problem, customer just copy the DDR layout from EVM board, did not do simulation by themself yet, so use EVM board IO configuration, only changed DDR Density from 16 to 8 as LPDDR4 device is 4GB on custom board. Also modified memory size in dts to 4GB.

Also modified memory size in dts to 4GB.

BTW, the uboot log of EVM shows 2GiB (effective 8 GiB), why 2GiB?

U-Boot 2024.04-ti-dirty (Apr 21 2025 - 13:23:08 +0800)

SoC: J722S SR1.0 HS-FS
Model: Texas Instruments J722S EVM
DRAM: 2 GiB (effective 8 GiB)
Core: 79 devices, 29 uclasses, devicetree: separate
MMC: mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In: serial@2800000
Out: serial@2800000
Err: serial@2800000
Net: eth0: ethernet@8000000port@1
Hit any key to stop autoboot: 1

24 days ago

0 Kevin S 24 days ago

TI__Mastermind 38170 points

Tony,

Have they tried to lower DDR frequency?
How many boards have they tried, and do they all show the same issue?
Is the customer able to connect through JTAG to visually inspect the DDR system address space?

Regards,
Kevin

0 Tony Tang 20 days ago in reply to Kevin S

TI__Mastermind 28922 points

Kevin,

Customer adjust impedance according to simulation result.

change memory size to 4GB in kernel dts already.

Now can boot from DFU to UBOOT and flash eMMC. but boot from eMMC always hang during Kernel init, tried to lower DDR frequency to 1600 even can't boot up DFU.

Fullscreen kernel-log-E.txt Download

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:46:27 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
SPL initial stack usage: 17048 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.12.0(release):11.00.08-1-gb11beb2b6-dirty
NOTICE:  BL31: Built : 12:35:58, Mar 24 2025

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:47:21 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
Trying to boot from MMC1
Authentication passed
Authentication passed
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@23: Error reading output register
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@20: Error reading output register


U-Boot 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 08:17:26 +0000)

SoC:   J722S SR1.0 HS-FS
Model: Texas Instruments J722S EVM
DRAM:  2 GiB (total 4 GiB)
Core:  103 devices, 30 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial@2800000
Out:   serial@2800000
Err:   serial@2800000
Net:   ====>phy_find_by_mask
Could not get PHY for mdio@f00: addr 0
am65_cpsw_nuss_port ethernet@8000000port@1: phy_connect() failed
No ethernet found.

Hit any key to stop autoboot:  0 
=> 
=> 
=> 
=> 
=> 
=> setenv mmcdev 0;setenv bootpart 0;boot
switch to partitions #0, OK
mmc0(part 0) is current device
SD/MMC found on device 0
Can't set block device
22256128 bytes read in 120 ms (176.9 MiB/s)
79605 bytes read in 3 ms (25.3 MiB/s)
Working FDT set to 88000000
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
Working FDT set to 88000000
   Loading Device Tree to 000000008fee9000, end 000000008fffffff ... OK
Working FDT set to 8fee9000

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 6.12.17-ti-00773-gcdcaeac783e3 (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Thu Apr  3 17:42:36 UTC 2025
[    0.000000] KASLR disabled due to lack of seed
[    0.000000] Machine model: Texas Instruments J722S EVM
[    0.000000] earlycon: ns16550a0 at MMIO32 0x0000000002800000 (options '')
[    0.000000] printk: legacy bootconsole [ns16550a0] enabled
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created CMA memory pool at 0x00000008c8000000, size 896 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000008c8000000..0x00000008ffffffff (917504 KiB) map reusable linux,cma
[    0.000000] OF: reserved mem: 0x000000009e800000..0x000000009fffffff (24576 KiB) nomap non-reusable optee@9e800000
[    0.000000] OF: reserved mem: 0x0000000080000000..0x000000008007ffff (512 KiB) nomap non-reusable tfa@80000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@a0000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0000000..0x00000000a00fffff (1024 KiB) nomap non-reusable r5f-dma-memory@a0000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node r5f-memory@a0100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0100000..0x00000000a0ffffff (15360 KiB) nomap non-reusable r5f-memory@a0100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-dma-memory-region@a1000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1000000..0x00000000a10fffff (1024 KiB) nomap non-reusable mcu-r5fss-dma-memory-region@a1000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-memory-region@a1100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1100000..0x00000000a1ffffff (15360 KiB) nomap non-reusable mcu-r5fss-memory-region@a1100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-dma-memory-region@a2000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2000000..0x00000000a20fffff (1024 KiB) nomap non-reusable main-r5fss-dma-memory-region@a2000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-memory-region@a2100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2100000..0x00000000a2ffffff (15360 KiB) nomap non-reusable main-r5fss-memory-region@a2100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a3000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3000000..0x00000000a30fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a3000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a3100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3100000..0x00000000a3ffffff (15360 KiB) nomap non-reusable c7x-memory@a3100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a4000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4000000..0x00000000a40fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a4000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a4100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4100000..0x00000000a4ffffff (15360 KiB) nomap non-reusable c7x-memory@a4100000
[    0.000000] OF: reserved mem: 0x00000000a5000000..0x00000000a6bfffff (28672 KiB) nomap non-reusable ipc-memories@a5000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   [mem 0x0000000100000000-0x00000008ffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080000000-0x000000008007ffff]
[    0.000000]   node   0: [mem 0x0000000080080000-0x000000009e7fffff]
[    0.000000]   node   0: [mem 0x000000009e800000-0x00000000a6bfffff]
[    0.000000]   node   0: [mem 0x00000000a6c00000-0x00000000ffffffff]
[    0.000000]   node   0: [mem 0x0000000880000000-0x00000008ffffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000008ffffffff]
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: Trusted OS migration not required
[    0.000000] psci: SMC Calling Convention v1.5
[    0.000000] percpu: Embedded 22 pages/cpu s51672 r8192 d30248 u90112
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: GIC system register CPU interface
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] alternatives: applying boot alternatives

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:46:27 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
SPL initial stack usage: 17048 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.12.0(release):11.00.08-1-gb11beb2b6-dirty
NOTICE:  BL31: Built : 12:35:58, Mar 24 2025

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:47:21 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
Trying to boot from MMC1
Authentication passed
Authentication passed
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@23: Error reading output register
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@20: Error reading output register


U-Boot 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 08:17:26 +0000)

SoC:   J722S SR1.0 HS-FS
Model: Texas Instruments J722S EVM
DRAM:  2 GiB (total 4 GiB)
Core:  103 devices, 30 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial@2800000
Out:   serial@2800000
Err:   serial@2800000
Net:   ====>phy_find_by_mask
Could not get PHY for mdio@f00: addr 0
am65_cpsw_nuss_port ethernet@8000000port@1: phy_connect() failed
No ethernet found.

Hit any key to stop autoboot:  0 
=> 
=> 
=> 
=> 
=> 
=> 
=> setenv mmcdev 0;setenv bootpart 0;boot
switch to partitions #0, OK
mmc0(part 0) is current device
SD/MMC found on device 0
Can't set block device
22256128 bytes read in 120 ms (176.9 MiB/s)
79605 bytes read in 3 ms (25.3 MiB/s)
Working FDT set to 88000000
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
Working FDT set to 88000000
   Loading Device Tree to 000000008fee9000, end 000000008fffffff ... OK
Working FDT set to 8fee9000

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 6.12.17-ti-00773-gcdcaeac783e3 (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Thu Apr  3 17:42:36 UTC 2025
[    0.000000] KASLR disabled due to lack of seed
[    0.000000] Machine model: Texas Instruments J722S EVM
[    0.000000] earlycon: ns16550a0 at MMIO32 0x0000000002800000 (options '')
[    0.000000] printk: legacy bootconsole [ns16550a0] enabled
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created CMA memory pool at 0x00000008c8000000, size 896 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000008c8000000..0x00000008ffffffff (917504 KiB) map reusable linux,cma
[    0.000000] OF: reserved mem: 0x000000009e800000..0x000000009fffffff (24576 KiB) nomap non-reusable optee@9e800000
[    0.000000] OF: reserved mem: 0x0000000080000000..0x000000008007ffff (512 KiB) nomap non-reusable tfa@80000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@a0000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0000000..0x00000000a00fffff (1024 KiB) nomap non-reusable r5f-dma-memory@a0000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node r5f-memory@a0100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0100000..0x00000000a0ffffff (15360 KiB) nomap non-reusable r5f-memory@a0100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-dma-memory-region@a1000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1000000..0x00000000a10fffff (1024 KiB) nomap non-reusable mcu-r5fss-dma-memory-region@a1000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-memory-region@a1100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1100000..0x00000000a1ffffff (15360 KiB) nomap non-reusable mcu-r5fss-memory-region@a1100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-dma-memory-region@a2000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2000000..0x00000000a20fffff (1024 KiB) nomap non-reusable main-r5fss-dma-memory-region@a2000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-memory-region@a2100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2100000..0x00000000a2ffffff (15360 KiB) nomap non-reusable main-r5fss-memory-region@a2100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a3000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3000000..0x00000000a30fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a3000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a3100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3100000..0x00000000a3ffffff (15360 KiB) nomap non-reusable c7x-memory@a3100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a4000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4000000..0x00000000a40fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a4000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a4100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4100000..0x00000000a4ffffff (15360 KiB) nomap non-reusable c7x-memory@a4100000
[    0.000000] OF: reserved mem: 0x00000000a5000000..0x00000000a6bfffff (28672 KiB) nomap non-reusable ipc-memories@a5000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   [mem 0x0000000100000000-0x00000008ffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080000000-0x000000008007ffff]
[    0.000000]   node   0: [mem 0x0000000080080000-0x000000009e7fffff]
[    0.000000]   node   0: [mem 0x000000009e800000-0x00000000a6bfffff]
[    0.000000]   node   0: [mem 0x00000000a6c00000-0x00000000ffffffff]
[    0.000000]   node   0: [mem 0x0000000880000000-0x00000008ffffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000008ffffffff]
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: Trusted OS migration not required
[    0.000000] psci: SMC Calling Convention v1.5
[    0.000000] percpu: Embedded 22 pages/cpu s51672 r8192 d30248 u90112
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: GIC system register CPU interface
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] alternatives: applying boot alternatives
[    0.000000] Kernel command line: console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 root=PARTUUID=05fc0062-237a-4d80-a1c6-6b262a1cee16 rw rootfstype=ext4 rootwait
[    0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[    0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 1048576
[    0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
[    0.000000] software IO TLB: area num 4.
[    0.000000] software IO TLB: mapped [mem 0x00000000fbfff000-0x00000000fffff000] (64MB)

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:46:27 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
SPL initial stack usage: 17048 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.12.0(release):11.00.08-1-gb11beb2b6-dirty
NOTICE:  BL31: Built : 12:35:58, Mar 24 2025

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:47:21 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
Trying to boot from MMC1
Authentication passed
Authentication passed
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@23: Error reading output register
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@20: Error reading output register


U-Boot 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 08:17:26 +0000)

SoC:   J722S SR1.0 HS-FS
Model: Texas Instruments J722S EVM
DRAM:  2 GiB (total 4 GiB)
Core:  103 devices, 30 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial@2800000
Out:   serial@2800000
Err:   serial@2800000
Net:   ====>phy_find_by_mask
Could not get PHY for mdio@f00: addr 0
am65_cpsw_nuss_port ethernet@8000000port@1: phy_connect() failed
No ethernet found.

Hit any key to stop autoboot:  0 
=> 
=> 
=> 
=> 
=> 
=> setenv mmcdev 0;setenv bootpart 0;boot
switch to partitions #0, OK
mmc0(part 0) is current device
SD/MMC found on device 0
Can't set block device
22256128 bytes read in 120 ms (176.9 MiB/s)
79605 bytes read in 3 ms (25.3 MiB/s)
Working FDT set to 88000000
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
Working FDT set to 88000000
   Loading Device Tree to 000000008fee9000, end 000000008fffffff ... OK
Working FDT set to 8fee9000

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 6.12.17-ti-00773-gcdcaeac783e3 (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Thu Apr  3 17:42:36 UTC 2025
[    0.000000] KASLR disabled due to lack of seed
[    0.000000] Machine model: Texas Instruments J722S EVM
[    0.000000] earlycon: ns16550a0 at MMIO32 0x0000000002800000 (options '')
[    0.000000] printk: legacy bootconsole [ns16550a0] enabled
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created CMA memory pool at 0x00000008c8000000, size 896 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000008c8000000..0x00000008ffffffff (917504 KiB) map reusable linux,cma
[    0.000000] OF: reserved mem: 0x000000009e800000..0x000000009fffffff (24576 KiB) nomap non-reusable optee@9e800000
[    0.000000] OF: reserved mem: 0x0000000080000000..0x000000008007ffff (512 KiB) nomap non-reusable tfa@80000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@a0000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0000000..0x00000000a00fffff (1024 KiB) nomap non-reusable r5f-dma-memory@a0000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node r5f-memory@a0100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0100000..0x00000000a0ffffff (15360 KiB) nomap non-reusable r5f-memory@a0100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-dma-memory-region@a1000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1000000..0x00000000a10fffff (1024 KiB) nomap non-reusable mcu-r5fss-dma-memory-region@a1000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-memory-region@a1100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1100000..0x00000000a1ffffff (15360 KiB) nomap non-reusable mcu-r5fss-memory-region@a1100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-dma-memory-region@a2000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2000000..0x00000000a20fffff (1024 KiB) nomap non-reusable main-r5fss-dma-memory-region@a2000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-memory-region@a2100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2100000..0x00000000a2ffffff (15360 KiB) nomap non-reusable main-r5fss-memory-region@a2100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a3000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3000000..0x00000000a30fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a3000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a3100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3100000..0x00000000a3ffffff (15360 KiB) nomap non-reusable c7x-memory@a3100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a4000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4000000..0x00000000a40fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a4000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a4100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4100000..0x00000000a4ffffff (15360 KiB) nomap non-reusable c7x-memory@a4100000
[    0.000000] OF: reserved mem: 0x00000000a5000000..0x00000000a6bfffff (28672 KiB) nomap non-reusable ipc-memories@a5000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   [mem 0x0000000100000000-0x00000008ffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080000000-0x000000008007ffff]
[    0.000000]   node   0: [mem 0x0000000080080000-0x000000009e7fffff]
[    0.000000]   node   0: [mem 0x000000009e800000-0x00000000a6bfffff]
[    0.000000]   node   0: [mem 0x00000000a6c00000-0x00000000ffffffff]
[    0.000000]   node   0: [mem 0x0000000880000000-0x00000008ffffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000008ffffffff]
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: Trusted OS migration not required
[    0.000000] psci: SMC Calling Convention v1.5
[    0.000000] percpu: Embedded 22 pages/cpu s51672 r8192 d30248 u90112
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: GIC system register CPU interface
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] alternatives: applying boot alternatives
[    0.000000] Kernel command line: console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 root=PARTUUID=05fc0062-237a-4d80-a1c6-6b262a1cee16 rw rootfstype=ext4 rootwait
[    0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[    0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 1048576
[    0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
[    0.000000] software IO TLB: area num 4.
[    0.000000] software IO TLB: mapped [mem 0x00000000fbfff000-0x00000000fffff000] (64MB)
[    0.000000] Unable to handle kernel paging request at virtual address ffff000081510000
[    0.000000] Mem abort info:
[    0.000000]   ESR = 0x0000000096000045
[    0.000000]   EC = 0x25: DABT (current EL), IL = 32 bits
[    0.000000]   SET = 0, FnV = 0
[    0.000000]   EA = 0, S1PTW = 0
[    0.000000]   FSC = 0x05: level 1 translation fault
[    0.000000] Data abort info:
[    0.000000]   ISV = 0, ISS = 0x00000045, ISS2 = 0x00000000
[    0.000000]   CM = 0, WnR = 1, TnD = 0, TagAccess = 0
[    0.000000]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[    0.000000] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000083142000
[    0.000000] [ffff000081510000] pgd=0000000000000000, p4d=18000008c7fff003, pud=0000000000000000
[    0.000000] Internal error: Oops: 0000000096000045 [#1] PREEMPT SMP
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.12.17-ti-00773-gcdcaeac783e3 #1
[    0.000000] Hardware name: Texas Instruments J722S EVM (DT)
[    0.000000] pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    0.000000] pc : __free_one_page+0x168/0x458
[    0.000000] lr : __free_one_page+0x64/0x458
[    0.000000] sp : ffff800081403c20
[    0.000000] x29: ffff800081403c20 x28: 0000000000000000 x27: 0000000000000000
[    0.000000] x26: 0000000000000040 x25: 0000000000000000 x24: fffffdffc01fe000
[    0.000000] x23: 0000000000000001 x22: 0000000000087f80 x21: 0000000000000006
[    0.000000] x20: 0000000000000002 x19: ffff80008151fb80 x18: ffff80008156e6e8
[    0.000000] x17: 000000000000001a x16: 0000000000000019 x15: 0000000080080000
[    0.000000] x14: 000000009e800000 x13: 0000000000000000 x12: 0000000000087fc0
[    0.000000] x11: dead000000000122 x10: dead000000000100 x9 : ffffc1ffc0000000
[    0.000000] x8 : ffff80008140b080 x7 : ffff80008151fdf0 x6 : fffffdffc01ff000
[    0.000000] x5 : ffff800081520180 x4 : fffffdffc01fe008 x3 : 0000000000000006
[    0.000000] x2 : ffff000081510000 x1 : ffff80008151ff00 x0 : ffff80008151fe00
[    0.000000] Call trace:
[    0.000000]  __free_one_page+0x168/0x458
[    0.000000]  split_large_buddy+0xd8/0xec
[    0.000000]  free_one_page+0x58/0x9c
[    0.000000]  __free_pages_ok+0x114/0x41c
[    0.000000]  __free_pages_core+0xb4/0x134
[    0.000000]  memblock_free_pages+0x18/0x24
[    0.000000]  memblock_free_all+0x1ec/0x2dc
[    0.000000]  mem_init+0x34/0x84
[    0.000000]  mm_core_init+0x8c/0x100
[    0.000000]  start_kernel+0x27c/0x6a0
[    0.000000]  __primary_switched+0x80/0x88
[    0.000000] Code: 8b000260 f9408402 f9008404 a9008b01 (f9000044) 
[    0.000000] ---[ end trace 0000000000000000 ]---
[    0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[    0.000000] ---[ end Kernel panic - not syncing: Attempted to kill the idle task! ]---

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:46:27 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
SPL initial stack usage: 17048 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.12.0(release):11.00.08-1-gb11beb2b6-dirty
NOTICE:  BL31: Built : 12:35:58, Mar 24 2025

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:47:21 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:46:27 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
SPL initial stack usage: 17048 bytes
Trying to boot from MMC1
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Authentication passed
Starting ATF on ARM64 core...

NOTICE:  BL31: v2.12.0(release):11.00.08-1-gb11beb2b6-dirty
NOTICE:  BL31: Built : 12:35:58, Mar 24 2025

U-Boot SPL 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 02:47:21 +0000)
SYSFW ABI: 4.0 (firmware rev 0x000b '11.0.9--v11.00.09+ (Fancy Rat)')
Trying to boot from MMC1
Authentication passed
Authentication passed
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@23: Error reading output register
i2c_write: error waiting for data ACK (status=0x116)
pca953x gpio@20: Error reading output register


U-Boot 2025.01-g70667128cb5b-dirty (Aug 16 2025 - 08:17:26 +0000)

SoC:   J722S SR1.0 HS-FS
Model: Texas Instruments J722S EVM
DRAM:  2 GiB (total 4 GiB)
Core:  103 devices, 30 uclasses, devicetree: separate
MMC:   mmc@fa10000: 0, mmc@fa00000: 1
Loading Environment from nowhere... OK
In:    serial@2800000
Out:   serial@2800000
Err:   serial@2800000
Net:   ====>phy_find_by_mask
Could not get PHY for mdio@f00: addr 0
am65_cpsw_nuss_port ethernet@8000000port@1: phy_connect() failed
No ethernet found.

Hit any key to stop autoboot:  0 
=> 
=> 
=> 
=> 
=> 
=> 
=> setenv mmcdev 0;setenv bootpart 0;boot
switch to partitions #0, OK
mmc0(part 0) is current device
SD/MMC found on device 0
Can't set block device
22256128 bytes read in 120 ms (176.9 MiB/s)
79605 bytes read in 3 ms (25.3 MiB/s)
Working FDT set to 88000000
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
Working FDT set to 88000000
   Loading Device Tree to 000000008fee9000, end 000000008fffffff ... OK
Working FDT set to 8fee9000

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 6.12.17-ti-00773-gcdcaeac783e3 (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT Thu Apr  3 17:42:36 UTC 2025
[    0.000000] KASLR disabled due to lack of seed
[    0.000000] Machine model: Texas Instruments J722S EVM
[    0.000000] earlycon: ns16550a0 at MMIO32 0x0000000002800000 (options '')
[    0.000000] printk: legacy bootconsole [ns16550a0] enabled
[    0.000000] efi: UEFI not found.
[    0.000000] Reserved memory: created CMA memory pool at 0x00000008c8000000, size 896 MiB
[    0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000008c8000000..0x00000008ffffffff (917504 KiB) map reusable linux,cma
[    0.000000] OF: reserved mem: 0x000000009e800000..0x000000009fffffff (24576 KiB) nomap non-reusable optee@9e800000
[    0.000000] OF: reserved mem: 0x0000000080000000..0x000000008007ffff (512 KiB) nomap non-reusable tfa@80000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node r5f-dma-memory@a0000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0000000..0x00000000a00fffff (1024 KiB) nomap non-reusable r5f-dma-memory@a0000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node r5f-memory@a0100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0100000..0x00000000a0ffffff (15360 KiB) nomap non-reusable r5f-memory@a0100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-dma-memory-region@a1000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1000000..0x00000000a10fffff (1024 KiB) nomap non-reusable mcu-r5fss-dma-memory-region@a1000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node mcu-r5fss-memory-region@a1100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1100000..0x00000000a1ffffff (15360 KiB) nomap non-reusable mcu-r5fss-memory-region@a1100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-dma-memory-region@a2000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2000000..0x00000000a20fffff (1024 KiB) nomap non-reusable main-r5fss-dma-memory-region@a2000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node main-r5fss-memory-region@a2100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2100000..0x00000000a2ffffff (15360 KiB) nomap non-reusable main-r5fss-memory-region@a2100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a3000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3000000..0x00000000a30fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a3000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a3100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a3100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a3100000..0x00000000a3ffffff (15360 KiB) nomap non-reusable c7x-memory@a3100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node c7x-dma-memory@a4000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4000000..0x00000000a40fffff (1024 KiB) nomap non-reusable c7x-dma-memory@a4000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a4100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node c7x-memory@a4100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a4100000..0x00000000a4ffffff (15360 KiB) nomap non-reusable c7x-memory@a4100000
[    0.000000] OF: reserved mem: 0x00000000a5000000..0x00000000a6bfffff (28672 KiB) nomap non-reusable ipc-memories@a5000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000ffffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   [mem 0x0000000100000000-0x00000008ffffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000080000000-0x000000008007ffff]
[    0.000000]   node   0: [mem 0x0000000080080000-0x000000009e7fffff]
[    0.000000]   node   0: [mem 0x000000009e800000-0x00000000a6bfffff]
[    0.000000]   node   0: [mem 0x00000000a6c00000-0x00000000ffffffff]
[    0.000000]   node   0: [mem 0x0000000880000000-0x00000008ffffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000008ffffffff]
[    0.000000] psci: probing for conduit method from DT.
[    0.000000] psci: PSCIv1.1 detected in firmware.
[    0.000000] psci: Using standard PSCI v0.2 function IDs
[    0.000000] psci: Trusted OS migration not required
[    0.000000] psci: SMC Calling Convention v1.5
[    0.000000] percpu: Embedded 22 pages/cpu s51672 r8192 d30248 u90112
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: GIC system register CPU interface
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] alternatives: applying boot alternatives
[    0.000000] Kernel command line: console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000 root=PARTUUID=05fc0062-237a-4d80-a1c6-6b262a1cee16 rw rootfstype=ext4 rootwait
[    0.000000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
[    0.000000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 1048576
[    0.000000] mem auto-init: stack:all(zero), heap alloc:off, heap free:off
[    0.000000] software IO TLB: area num 4.
[    0.000000] software IO TLB: mapped [mem 0x00000000fbfff000-0x00000000fffff000] (64MB)

From the log, it did not init peripherals yet, is it still DDR unstable?

0 Kevin S 20 days ago in reply to Tony Tang

TI__Mastermind 38170 points

Tony Tang said:
From the log, it did not init peripherals yet, is it still DDR unstable?

It seems that DDR is working to some extent given that DDR must be functional to boot u-boot. It could still be marginally functional, but typically a reduction in DDR frequency would help resolve any marginalities.

One thing I observed in a more recent Linux SDK is that the Linux device tree assumed 8GB DDR. Depending on which SDK the customer is using and whether or not they updated anything on the Linux device tree side to reflect that there is only 4GB could be related to the Linux kernel hangs.

I'll have to see if I can dig up details on where I observed this previously.

Regards,
Kevin

0 Tony Tang 20 days ago in reply to Kevin S

TI__Mastermind 28922 points

#1. Linux SDK11.0

#2. Changed device tree memory size from default 8GB to 4GB already.

#3. Reduce DDR frequency to 1600MHz doesn't help, and even worse.

0 Keerthy J 20 days ago in reply to Tony Tang

TI__Guru**** 162530 points

Tony,

Tony Tang said:
#2. Changed device tree memory size from default 8GB to 4GB already.

Are there device tree carve outs that still point to 8 GB memory?

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

                /* global cma region */
                linux,cma {
                        compatible = "shared-dma-pool";
                        reusable;
                        size = <0x00 0x38000000>;
                        linux,cma-default;
                };

"arch/arm64/boot/dts/ti/k3-j722s-evm.dts"

- Keerthy

0 Tony Tang 19 days ago in reply to Keerthy J

TI__Mastermind 28922 points

I did not see any section beyond 4GB, please help to check:

memory@80000000 {
		/* 8G RAM */
		reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
		      <0x00000008 0x80000000 0x00000000 0x80000000>;
		device_type = "memory";
		bootph-all;
	};

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

		/* global cma region */
		linux,cma {
			compatible = "shared-dma-pool";
			reusable;
			size = <0x00 0x38000000>;
			linux,cma-default;
		};

		secure_tfa_ddr: tfa@9e780000 {
			reg = <0x00 0x9e780000 0x00 0x80000>;
			no-map;
		};

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

		wkup_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa0000000 0x00 0x100000>;
			no-map;
		};

		wkup_r5fss0_core0_memory_region: r5f-memory@a0100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa0100000 0x00 0xf00000>;
			no-map;
		};

		mcu_r5fss0_core0_dma_memory_region: mcu-r5fss-dma-memory-region@a1000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa1000000 0x00 0x100000>;
			no-map;
		};

		mcu_r5fss0_core0_memory_region: mcu-r5fss-memory-region@a1100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa1100000 0x00 0xf00000>;
			no-map;
		};

		main_r5fss0_core0_dma_memory_region: main-r5fss-dma-memory-region@a2000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa2000000 0x00 0x100000>;
			no-map;
		};

		main_r5fss0_core0_memory_region: main-r5fss-memory-region@a2100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa2100000 0x00 0xf00000>;
			no-map;
		};

		c7x_0_dma_memory_region: c7x-dma-memory@a3000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa3000000 0x00 0x100000>;
			no-map;
		};

		c7x_0_memory_region: c7x-memory@a3100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa3100000 0x00 0xf00000>;
			no-map;
		};

		c7x_1_dma_memory_region: c7x-dma-memory@a4000000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa4000000 0x00 0x100000>;
			no-map;
		};

		c7x_1_memory_region: c7x-memory@a4100000 {
			compatible = "shared-dma-pool";
			reg = <0x00 0xa4100000 0x00 0xf00000>;
			no-map;
		};

		rtos_ipc_memory_region: ipc-memories@a5000000 {
			reg = <0x00 0xa5000000 0x00 0x1c00000>;
			alignment = <0x1000>;
			no-map;
		};
	};

0 Keerthy J 19 days ago in reply to Tony Tang

TI__Guru**** 162530 points

Tony,

Is the customer using vision apps DTS overlay or just the evm dts? I will try to dig into this but can you share the code changes done to reduce the default DDR size?

- Keerthy

0 Tony Tang 18 days ago in reply to Keerthy J

TI__Mastermind 28922 points

using the SDK11 under AM67 product folder：

https://www.ti.com/tool/download/PROCESSOR-SDK-LINUX-AM67A

Changes:

#1. sysconfig generated dtsi, changed size and impedance.

#2. dts change:

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

0 Tony Tang 18 days ago in reply to Tony Tang

TI__Mastermind 28922 points

Got dts file and log from customer:

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/k3_2D00_j722s_2D00_evm.dts

kernel-log1.txt

0 Keerthy J 18 days ago in reply to Tony Tang

TI__Guru**** 162530 points

Tony,

A diff patch is better for review. Also kernel log is now looking different and see that you are able to proceed to mounting file system. Any specific changes?

Welcome to Arago 2025.01!

[ 1.983959] systemd[1]: Hostname set to <j722s-evm>."

- Keerthy

0 Tony Tang 17 days ago in reply to Keerthy J

TI__Mastermind 28922 points

Customer deleted some node from dts, each time hang on difference place, can't enter command line.

0 Keerthy J 13 days ago in reply to Tony Tang

TI__Guru**** 162530 points

Tony,

Which dts is being deleted? I am not getting a clear picture of what is improving.

- Keerthy

Processors

Processors forum

AM67A: LPDDR4 bring up