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[#1]

Does dtb change the LAW configuration (T2080RDB)?

Hi,

I am using the T2080RDB. I want to change the memory location for a PCI device. I have changed the dtb. However, it does not work because the LAW register are not modified.

I want to know if I must to change uboot and dtb (both of them) in order to get a proper functionality.

BR

QorIQ T4 DevicesRe: Does dtb change the LAW configuration (T2080RDB)?

That’s an interesting question about changes in LAW configuration. In many cases, even small adjustments can impact functionality, so it’s always best to cross-check with reliable resources. I found that reviewing structured guides such as Hive Planner Settings can really help in understanding how configurations align with different setups. Keeping track of updates and testing changes in a controlled environment is also highly recommended.

Re: Does dtb change the LAW configuration (T2080RDB)?

Device Tree only reflects the local address map established by the bootloader. Linux does not change LAWs.

If you want to change LAW settings, do it in the board-specific code in u-Boot and adjust the Device Tree

accordingly.

Re: Does dtb change the LAW configuration (T2080RDB)?

Interesting question. From what I've seen, updating the DTB usually changes the hardware description and boot settings rather than modifying the LAW configuration directly, unless the firmware or board support package specifically ties them together. I found some useful background while checking Tarrant Property Details and it reminded me how important it is to verify configuration changes instead of assuming they're automatic. Comparing the before-and-after settings is probably the safest way to confirm whether LAW has actually been affected.

Re: Does dtb change the LAW configuration (T2080RDB)?

DTB behavior with LAW configuration on the T2080RDB can depend on the specific settings and software version being used. It may be helpful to review the configuration files and related documentation to confirm how parameters are applied. For additional reference on organized record systems resources like DeSoto Court Appeals can provide examples of structured data access. Checking logs and testing changes in a controlled setup can also help identify the exact impact.