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Again, please clarify should I have something incorrect or >>> incomplete. >>> >>> 1) The primary issue is when an old dtb is used with this commit and >>> the pcie driver is loaded. I can reproduce this issue on t186 and >>> t194. If this becomes the sole remaining blocking issue, I would like >>> for an exception to the normal rule be considered and this merged >>> anyways. Since it does not cause a boot failure and distros package a >>> new dt normally anyways. And to my knowledge, working around this >>> would involve redoing part off the icc subsystem itself, a major task >>> in comparison. >>> >>> 2) T194 is reported to have low clocks even with a new dt on the >>> Nvidia regression bench. I cannot reproduce this, even with the pcie >>> driver loaded. Can this be re-verified, please? And if it still >>> happens, can logs from the failure be made available and/or more >>> information provided as to the state of the unit? Like changes to the >>> default defconfig, modules that get loaded, etc. >> >> Can you list all the patches that need to be applied on top of the >> current -next and I will run it through our testing to make sure I have >> this correct. > > This series, message id: > 20251027-tegra186-icc-p2-v4-0-e4e4f57e2103@gmail.com. And the dt > series, message id: > 20251021-tegra186-icc-p3-v3-0-68184ee8a89c@gmail.com. So, my build > sequence is: > > git checkout next-20251217 > b4 shazam 20251027-tegra186-icc-p2-v4-0-e4e4f57e2103@gmail.com > b4 shazam 20251021-tegra186-icc-p3-v3-0-68184ee8a89c@gmail.com Thanks I added all these on top of next-20251216 (as that is the latest I have tested) and Tegra194 fails to boot. We always include all the modules in the rootfs that is being tested. You can see the boot log here [0]. We are using an NFS rootfs for testing and I see a message related to the NFS server not responding. I am guessing something is running too slow again because the only thing I changed was adding your patches. The test harness reports it is timing out ... FAILED: Linux Boot Test 1 Test Owner(s): N/A Execution Time 219.31 sec Test TIMEOUT reached. Test did not report results in 120 secs Percent passed so far: 0.0 >>> 3) Setting the max clock via debugfs fails when icc has pushed the >>> current clock higher than the requested rate. This is a logic issue >>> with all tegra emc drivers that implement dfs via icc. The suggested >>> resolutions are to leave this as is to keep consistency with the >>> existing drivers, perhaps updating all later, or to update the >>> existing implementations in a separate series, then send a new >>> revision here to match. I am personally unable to verify anything >>> older than tegra124, however. >> >> Thierry and I chatted about this last week and we feel that debugfs >> should be able to override the current configuration. So this will need >> to be addressed as well. > > Alright. I will start looking at getting that logic straight, then > upload a new series for the older archs and a new revision of this. And just to confirm the test that sets the EMC frequency via the debugfs also still fails. Jon [0] https://pastebin.com/5ghbSsu7 -- nvpublic