Accessing of Jetson AGX Orin Registers using devmem2 tool

Hi Team,

We are trying to access the following register using devmem2 tool in the Jetson AGX Orin module.

Following is the address details, calculated from the TRM manual TRM(Orin-TRM_DP10508002_v1.2p)

Address[0x3D729] : Base address[0x31000] + Offset[0xC729]

But getting below error:

jetson@tegra-ubuntu:~$ sudo devmem2 0x3D729
/dev/mem opened.
Memory mapped at address 0xffff9a6ae000.
Bus error

Can you please help us to check , whether base address or any changes in address .

Thanks
Ramesh

Have reference to below topic.

Hi Team,

we want to perform the PRBS testing using below register, we are trying to access the register using devmem2 tool in the devkit .

But while reading and writing the registers its not reflecting the changes and always its showing as 0XFFFFFFFF .

please let me know any issue accessing the address

Address[0x3D710] : Base address[0x31000] + Offset[0xC710]

Register: NVCSI_PHY_2_NVCSI_CIL_CPHY_BIST_CONFIG_0_0

jetson@tegra-ubuntu:~$ sudo devmem2 0X3D710 
/dev/mem opened.
Memory mapped at address 0xffffba62e000.
Value at address 0x3D710 (0xffffba62e710): 0xFFFFFFFF

jetson@tegra-ubuntu:~$ sudo devmem2 0X3D710 w 0x101
/dev/mem opened.
Memory mapped at address 0xffff98af8000.
Value at address 0x3D710 (0xffff98af8710): 0xFFFFFFFF
Written 0x101; readback 0xFFFFFFFF

Please let us know the if any correction in accessing the address and point the correct address if any thing wrong .

Thanks
Ramesh

Hi team,

please help to get the base address of below register
NVCSI_PHY_2_NVCSI_CIL_CPHY_BIST_CONFIG_0_0

After referring the TRM(Orin-TRM_DP10508002_v1.2p) manual
we got few address related to PHY_2 as shown below and tried to access them, but its not working.


uphy2

please help to get the exact base address for the register mentioned above would be helpful.

Thanks
Ramesh