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AM67A: How to configure DDR for AM67A?

zhaohang lai
Prodigy 190 points

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

I used SysConfig to generate the k3-j722s-ddr-evm-lp4.dtsi file. Then, where should I place this file and what parts should I modify in order to make it compatible with my own DDR chip?

  • 0
    TI__Mastermind 45040 points

    Hi,

    Is your question about how to use the AM67A DDR configuration tool, or how to update your software with the output of the tool?

    Regards,
    Kevin

  • 0 in reply to Kevin S
    Prodigy 190 points

    Hi,
    How to update my software with the output of the tool? It might be related to modifying the u-boot in the SDK, but I'm not sure exactly how to do it.

  • 0
    Prodigy 190 points

    Fullscreen 0830.debug.txt Download 
    U-Boot SPL 2024.04-00003-g5cf02782-dirty (Feb 28 2026 - 16:15:54 +0800)
SYSFW ABI: 4.0 (firmware rev 0x000a '10.1.6--v10.01.06 (Fiery Fox)')
Trying to boot from MMC2
mmc_load_image_raw_sector: mmc block read error
Authentication passed
Authentication passed


U-Boot 2024.04-00003-g5cf02782-dirty (Feb 28 2026 - 16:15:54 +0800)

SoC:   J722S SR1.0 HS-FS
Model: Texas Instruments J722S EVM
DRAM:  1 GiB
Core:  79 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:   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
switch to partitions #0, OK
mmc1 is current device
SD/MMC found on device 1
940 bytes read in 73 ms (11.7 KiB/s)
Loaded env from uEnv.txt
Importing environment from mmc1 ...
Running uenvcmd ...
50612 bytes read in 121 ms (408.2 KiB/s)
Warning: Did not detect image signing certificate. Skipping authentication to prevent boot failure. This will fail on Security Enforcing(HS-SE) devices
Load Remote Processor 0 with data@addr=0x82000000 50612 bytes: Success!
613280 bytes read in 143 ms (4.1 MiB/s)
Warning: Did not detect image signing certificate. Skipping authentication to prevent boot failure. This will fail on Security Enforcing(HS-SE) devices
Load Remote Processor 2 with data@addr=0x82000000 613280 bytes: Success!
10862760 bytes read in 306 ms (33.9 MiB/s)
Warning: Did not detect image signing certificate. Skipping authentication to prevent boot failure. This will fail on Security Enforcing(HS-SE) devices
Load Remote Processor 3 with data@addr=0x82000000 10862760 bytes: Success!
10862760 bytes read in 306 ms (33.9 MiB/s)
Warning: Did not detect image signing certificate. Skipping authentication to prevent boot failure. This will fail on Security Enforcing(HS-SE) devices
Load Remote Processor 4 with data@addr=0x82000000 10862760 bytes: Success!
17494528 bytes read in 757 ms (22 MiB/s)
80118 bytes read in 77 ms (1015.6 KiB/s)
Working FDT set to 88000000
6490 bytes read in 74 ms (85 KiB/s)
Set to BOOT_BUS_WIDTH = 0x2, RESET = 0x0, BOOT_MODE = 0x0
## 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 6.6.44-rt39-ti-01478-g541c20281af7-dirty (oe-user@oe-host) (aarch64-oe-linux-gcc (GCC) 13.3.0, GNU ld (GNU Binutils) 2.42.0.20240723) #1 SMP PREEMPT_RT Thu Nov 14 19:20:24 UTC 2024
[    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] OF: reserved mem: 0x0000000080000000..0x000000008007ffff (512 KiB) nomap non-reusable tfa@80000000
[    0.000000] OF: reserved mem: 0x000000009e800000..0x000000009fffffff (24576 KiB) nomap non-reusable optee@9e800000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-r5f-dma-memory@a0000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0000000..0x00000000a00fffff (1024 KiB) nomap non-reusable vision-apps-r5f-dma-memory@a0000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a0100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-r5f-memory@a0100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a0100000..0x00000000a0ffffff (15360 KiB) nomap non-reusable vision-apps-r5f-memory@a0100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-r5f-dma-memory@a1000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1000000..0x00000000a10fffff (1024 KiB) nomap non-reusable vision-apps-r5f-dma-memory@a1000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a1100000, size 15 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-r5f-memory@a1100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a1100000..0x00000000a1ffffff (15360 KiB) nomap non-reusable vision-apps-r5f-memory@a1100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-r5f-dma-memory@a2000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2000000..0x00000000a20fffff (1024 KiB) nomap non-reusable vision-apps-r5f-dma-memory@a2000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a2100000, size 31 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-r5f-memory@a2100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a2100000..0x00000000a3ffffff (31744 KiB) nomap non-reusable vision-apps-r5f-memory@a2100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a5000000, size 32 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-rtos-ipc-memory-region@a5000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a5000000..0x00000000a6ffffff (32768 KiB) nomap non-reusable vision-apps-rtos-ipc-memory-region@a5000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000a7000000, size 96 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-dma-memory@a7000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000a7000000..0x00000000acffffff (98304 KiB) nomap non-reusable vision-apps-dma-memory@a7000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000ad000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-c71-dma-memory@ad000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000ad000000..0x00000000ad0fffff (1024 KiB) nomap non-reusable vision-apps-c71-dma-memory@ad000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000ad100000, size 63 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-c71_0-memory@ad100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000ad100000..0x00000000b0ffffff (64512 KiB) nomap non-reusable vision-apps-c71_0-memory@ad100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000b1000000, size 1 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-c71_1-dma-memory@b1000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000b1000000..0x00000000b10fffff (1024 KiB) nomap non-reusable vision-apps-c71_1-dma-memory@b1000000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000b1100000, size 63 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-c71_1-memory@b1100000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x00000000b1100000..0x00000000b4ffffff (64512 KiB) nomap non-reusable vision-apps-c71_1-memory@b1100000
[    0.000000] Reserved memory: created DMA memory pool at 0x00000000b5000000, size 40 MiB
[    0.000000] OF: reserved mem: initialized node vision-apps-core-heap-memory-lo@b5000000, compatible id shared-dma-pool
[    0.000000] OF: [    0.000000] OF: reserved mem: 0x00000000b5000000..0x00000000b77fffff (40960 KiB) nomap non-reusable vision-apps-core-heap-memory-lo@b5000000
[    0.000000] Reserved memory: created DMA memory pool at 0x0000000880000000, size 512 MiB
[    0.000000] OF: reserved mem: initialized node c7x-ddr-heaps-hi@880000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x0000000880000000..0x000000089fffffff (524288 KiB) nomap non-reusable c7x-ddr-heaps-hi@880000000
[    0.000000] OF: reserved mem: initialized node vision_apps_shared-memories, compatible id dma-heap-carveout
[    0.000000] OF: reserved mem: 0x0000000900000000..0x000000091fffffff (524288 KiB) map non-reusable vision_apps_shared-memories
[    0.000000] Reserved memory: created CMA memory pool at 0x0000000980000000, size 896 MiB
[    0.000000] OF: reserved mem: initialized node linux-cma-buffers@980000000, compatible id shared-dma-pool
[    0.000000] OF: reserved mem: 0x0000000980000000..0x00000009b7ffffff (917504 KiB) map reusable linux-cma-buffers@980000000
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000080000000-0x00000000bfffffff]
[    0.000000]   DMA32    empty
[    0.000000]   Normal   empty
[    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 0x000000009e800000-0x00000000a3ffffff]
[    0.000000]   node   0: [mem 0x00000000a4000000-0x00000000a4ffffff]
[    0.000000]   node   0: [mem 0x00000000a5000000-0x00000000b77fffff]
[    0.000000]   node   0: [mem 0x00000000b7800000-0x00000000bfffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000000bfffffff]
[    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 21 pages/cpu s47040 r8192 d30784 u86016
[    0.000000] pcpu-alloc: s47040 r8192 d30784 u86016 alloc=21*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
[    0.000000] Detected VIPT I-cache on CPU0
[    0.000000] CPU features: detected: GIC system register CPU interface
[    0.000000] CPU features: kernel page table isolation disabled by kernel configuration
[    0.000000] CPU features: detected: ARM erratum 845719
[    0.000000] alternatives: applying boot alternatives
[    0.000000] Kernel command line: console=ttyS0,115200n8 earlycon=ns16550a,mmio32,0x02800000 loglevel=7 root=PARTUUID=076c4a2a-02 rw rootfstype=ext4 rootwait
[    0.000000] Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 7, 524288 bytes, linear)
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 258048
[    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 0x00000000bad80000-0x00000000bed80000] (64MB)
[    0.000000] Memory: 552176K/1048576K available (10816K kernel code, 1212K rwdata, 2728K rodata, 2240K init, 460K bss, 18446744073709130512K reserved, 917504K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] rcu: Preemptible hierarchical RCU implementation.
[    0.000000] rcu:     RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=4.
[    0.000000] rcu:     RCU_SOFTIRQ processing moved to rcuc kthreads.
[    0.000000]  No expedited grace period (rcu_normal_after_boot).
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[    0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[    0.000000] GICv3: GIC: Using split EOI/Deactivate mode
[    0.000000] GICv3: 256 SPIs implemented
[    0.000000] GICv3: 0 Extended SPIs implemented
[    0.000000] Root IRQ handler: 0xffff8000800100c0
[    0.000000] GICv3: GICv3 features: 16 PPIs
[    0.000000] GICv3: CPU0: found redistributor 0 region 0:0x0000000001880000
[    0.000000] ITS [mem 0x01820000-0x0182ffff]
[    0.000000] GIC: enabling workaround for ITS: Socionext Synquacer pre-ITS
[    0.000000] ITS@0x0000000001820000: Devices Table too large, reduce ids 20->19
[    0.000000] ITS@0x0000000001820000: allocated 524288 Devices @80c00000 (flat, esz 8, psz 64K, shr 0)
[    0.000000] ITS: using cache flushing for cmd queue
[    0.000000] GICv3: using LPI property table @0x0000000080430000
[    0.000000] GIC: using cache flushing for LPI property table
[    0.000000] GICv3: CPU0: using allocated LPI pending table @0x0000000080440000
[    0.000000] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[    0.000000] arch_timer: cp15 timer(s) running at 200.00MHz (phys).
[    0.000000] clocksource: arch_sys_counter: mask: 0x3ffffffffffffff max_cycles: 0x2e2049d3e8, max_idle_ns: 440795210634 ns
[    0.000000] sched_clock: 58 bits at 200MHz, resolution 5ns, wraps every 4398046511102ns
[    0.000276] Console: colour dummy device 80x25
[    0.000325] Calibrating delay loop (skipped), value calculated using timer frequency.. 400.00 BogoMIPS (lpj=200000)
[    0.000335] pid_max: default: 32768 minimum: 301
[    0.000400] LSM: initializing lsm=capability,selinux,integrity
[    0.000423] SELinux:  Initializing.
[    0.000563] Mount-cache hash table entries: 2048 (order: 2, 16384 bytes, linear)
[    0.000573] Mountpoint-cache hash table entries: 2048 (order: 2, 16384 bytes, linear)
[    0.008582] rcu: Hierarchical SRCU implementation.
[    0.008591] rcu:     Max phase no-delay instances is 400.
[    0.048725] Platform MSI: msi-controller@1820000 domain created
[    0.049012] PCI/MSI: /bus@f0000/interrupt-controller@1800000/msi-controller@1820000 domain created
[    0.049145] EFI services will not be available.
[    0.059559] smp: Bringing up secondary CPUs ...
[    0.140187] Detected VIPT I-cache on CPU1
[    0.140267] GICv3: CPU1: found redistributor 1 region 0:0x00000000018a0000
[    0.140282] GICv3: CPU1: using allocated LPI pending table @0x0000000080450000
[    0.140334] CPU1: Booted secondary processor 0x0000000001 [0x410fd034]
[    0.274569] Detected VIPT I-cache on CPU2
[    0.274628] GICv3: CPU2: found redistributor 2 region 0:0x00000000018c0000
[    0.274641] GICv3: CPU2: using allocated LPI pending table @0x0000000080460000
[    0.274676] CPU2: Booted secondary processor 0x0000000002 [0x410fd034]
[    0.388312] Detected VIPT I-cache on CPU3
[    0.388370] GICv3: CPU3: found redistributor 3 region 0:0x00000000018e0000
[    0.388383] GICv3: CPU3: using allocated LPI pending table @0x0000000080470000
[    0.388415] CPU3: Booted secondary processor 0x0000000003 [0x410fd034]
[    0.419606] smp: Brought up 1 node, 4 CPUs
[    0.419612] SMP: Total of 4 processors activated.
[    0.419616] CPU features: detected: 32-bit EL0 Support
[    0.419620] CPU features: detected: CRC32 instructions
[    0.442224] CPU: All CPU(s) started at EL2
[    0.442227] alternatives: applying system-wide alternatives
[    0.449135] devtmpfs: initialized
[    0.463123] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
[    0.463147] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
[    0.463262] ------------[ cut here ]------------
[    0.463265] WARNING: CPU: 0 PID: 1 at /mm/cma.c:111 0xffff800080d68964
[    0.463273] Modules linked in:
[    0.463283] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.6.44-rt39-ti-01478-g541c20281af7-dirty #1
[    0.463292] Hardware name: Texas Instruments J722S EVM (DT)
[    0.463296] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    0.463303] pc : 0xffff800080d68964
[    0.463306] lr : 0xffff800080d68614
[    0.463308] sp : ffff000000493d50
[    0.463310] x29: ffff000000493d50 x28: ffff8000810eb090 x27: ffff800080db6040
[    0.463320] x26: ffff800080d500a0 x25: ffff800080c1b000 x24: ffff800080d43b08
[    0.463329] x23: 0000000000000000 x22: 0000000000000000 x21: 00000000001fffff
[    0.463338] x20: 0000000000980000 x19: ffff8000810b5000 x18: 0000000000000000
[    0.463346] x17: ffff80008105a838 x16: 000000005ac2cccc x15: 0000000000000002
[    0.463355] x14: 000000009726acae x13: 0000000080d94729 x12: 000000000002138d
[    0.463363] x11: 0000000000000000 x10: ffff800081098358 x9 : 0000000000000000
[    0.463371] x8 : ffff800081098348 x7 : 0000000000000040 x6 : 0000000000000000
[    0.463380] x5 : fffffc0000017e01 x4 : ffff7fffbf169000 x3 : ffff0000004b0000
[    0.463389] x2 : 0000000000000000 x1 : ffff0000004b0000 x0 : 0000000100000000
[    0.463398] Call trace:
[    0.463401]  0xffff800080d68964
[    0.463404]  0xffff800080013a34
[    0.463406]  0xffff800080d50e2c
[    0.463409]  0xffff800080a8d2e4
[    0.463412]  0xffff800080014870
[    0.463415] ---[ end trace 0000000000000000 ]---
[    0.463487] Unable to handle kernel paging request at virtual address fffffc0024000000
[    0.463492] Mem abort info:
[    0.463494]   ESR = 0x0000000096000006
[    0.463497]   EC = 0x25: DABT (current EL), IL = 32 bits
[    0.463501]   SET = 0, FnV = 0
[    0.463504]   EA = 0, S1PTW = 0
[    0.463506]   FSC = 0x06: level 2 translation fault
[    0.463510] Data abort info:
[    0.463511]   ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000
[    0.463515]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0
[    0.463518]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[    0.463522] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000082d4e000
[    0.463527] [fffffc0024000000] pgd=10000000bff87003, p4d=10000000bff87003, pud=10000000bff86003, pmd=0000000000000000
[    0.463539] Internal error: Oops: 0000000096000006 [#1] PREEMPT_RT SMP
[    0.463544] Modules linked in:
[    0.463547] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G        W          6.6.44-rt39-ti-01478-g541c20281af7-dirty #1
[    0.463554] Hardware name: Texas Instruments J722S EVM (DT)
[    0.463557] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    0.463563] pc : 0xffff800080d686d4
[    0.463565] lr : 0xffff800080d68614
[    0.463568] sp : ffff000000493d50
[    0.463570] x29: ffff000000493d50 x28: ffff8000810eb090 x27: ffff800080db6040
[    0.463579] x26: ffff800080d500a0 x25: ffff800080cdc2c0 x24: ffff800080d43b08
[    0.463588] x23: 0000000000000000 x22: 0000000000000000 x21: 00000000001fffff
[    0.463596] x20: 0000000000980000 x19: 0000000000980001 x18: 0000000000000000
[    0.463604] x17: ffff80008105a838 x16: 000000005ac2cccc x15: 0000000000000002
[    0.463613] x14: 000000009726acae x13: 0000000080d94729 x12: 000000000002138d
[    0.463621] x11: 0000000000000000 x10: ffff800081098358 x9 : 0000000000000000
[    0.463629] x8 : ffff800081098348 x7 : 0000000000000040 x6 : 0000000000000000
[    0.463637] x5 : fffffc0000017e01 x4 : ffff7fffbf169000 x3 : fffffc0000000000
[    0.463646] x2 : ffff800080cdc000 x1 : 0000000024000000 x0 : 00000000009b8000
[    0.463654] Call trace:
[    0.463656]  0xffff800080d686d4
[    0.463659]  0xffff800080013a34
[    0.463662]  0xffff800080d50e2c
[    0.463664]  0xffff800080a8d2e4
[    0.463667]  0xffff800080014870
[    0.463674] Code: 8b000280 910b0059 cb813281 d37ae421 (f8636821)
[    0.463679] ---[ end trace 0000000000000000 ]---
[    0.463690] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    0.463694] SMP: stopping secondary CPUs
[    1.506615] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---

    This is the kernel debugging information after changing to DDR. How should I solve this problem?

  • 0 in reply to zhaohang lai
    TI__Mastermind 45040 points

    Hi,

    If you slow the LPDDR4 frequency down (generate a new DTSI file), does the issue persist? Note that when you change the LPDDR4 frequency, you also need to update the latency timing parameters.

    Regards,
    Kevin

  • 0 in reply to Kevin S
    Prodigy 190 points

    Hi,
    I have tried it, but the problem persists. Additionally, DDR has been changed from 8GB to 1GB. Do I need to modify any memory range? Of course, this is just my speculation.

  • 0 in reply to Kevin S
    Prodigy 190 points

    I corrected the invalid CMA range in k3-j722s-evm.dts. Then I discovered that it was because the uEnv.txt in uboot used name_overlays=ti/k3-j722s-edgeai-apps.dtbo, which caused the CMA range to be fixed. I want to know if k3-j722s-edgeai-apps.dtbo is necessary. In fact, I have no idea what the function of this file is.

  • 0 in reply to zhaohang lai
    TI__Mastermind 45040 points

    Hi,

    Thanks for the additional information. Based on this information, I do not believe your issue is related to stability of the DDR interface, but rather a software issue. Thus, I will re-assign this ticket to our software support team.

    Regards,
    Kevin

  • 0 in reply to zhaohang lai
    TI__Guru**** 171290 points

    Hi,

    zhaohang lai said:
    I want to know if k3-j722s-edgeai-apps.dtbo is necessary. In fact, I have no idea what the function of this file is.

    That will reserve additional regions for edgeAI applications. So if you are not using that you need not use the k3-j722s-edgeai-apps.dtbo.

    I hope you are booting to Linux now?

    - Keerthy