Thanks for the hints. I combined the in- and out-ports into a single ports node, which made all errors except
disappear. However, with the modified .dtsi configuration I attached, only the replicator and the STM (again, at the 2nd try) get initialized. Do you have an idea how to also have the other CoreSight devices initialized?
Regarding the "coresight-default-sink" attribute: The Nvidia developers included it in a DT configuration for another Nvidia SoC (Orin / tegra234), so I copied it for mine. At first glance, it did not seem to be a problem. Would you recommend removing it?
Hi Vincent
A couple of observations that might help...
On Fri, 3 Jan 2025 at 10:59, vincent.ernst@web.de <vincent.ernst@web.de> wrote:
>
> Hi Suzuki,
>
> thanks for the reply! The CPUs of the boards I am using are all based on Arm-v8(.2), but I found the components' addresses in the manuals of the SoCs.
>
> I managed to modify the Devicetree by writing my own .dtsi file (see attachment) and finally got the CoreSight devices in /sys/devices/.
>
> However, dmesg shows the following:
> [ 0.000000] Booting Linux on physical CPU 0x0
> [ 0.000000] Linux version 4.9.253-coresight (user@user-desktop) (gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) ) #1 SMP PREEMPT Wed Jan 1 18:45:04 CET 2025
> [ 0.000000] Boot CPU: AArch64 Processor [411fd071]
> (omitted 87 lines)
> [ 0.212039] DTS File Name: /home/user/Downloads/Linux_for_Tegra/source/public/kernel/kernel-4.9/arch/arm64/boot/dts/../../../../../../hardware/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0000-p3449-0000-a02.dts
> [ 0.212045] DTB Build time: Jan 1 2025 16:04:45
> (omitted 35 lines)
> [ 0.420616] DTS File Name: /home/user/Downloads/Linux_for_Tegra/source/public/kernel/kernel-4.9/arch/arm64/boot/dts/../../../../../../hardware/nvidia/platform/t210/porg/kernel-dts/tegra210-p3448-0000-p3449-0000-a02.dts
> [ 0.420622] DTB Build time: Jan 1 2025 16:04:45
> (omitted 75 lines)
> [ 0.524166] OF: amba_device_add() failed (-19) for /funnel_bccplex@73001000
> (omitted 367 lines)
> [ 1.330484] OF: graph: no port node found in /etf@72030000
the
in-ports {
port {
}
}
out-ports {
port {
}
}
paradigm was not introduced till about kernel version 4.12 - you
appear to be using kernel version 4.9. DTS and the drivers themselves
were modified at this time.
I am wondering if that is causing some of your issues.
Additionally the attribute "coresight-default-sink" is not one that
appears to be valid in the current drivers, or has ever been valid as
far as I recall.
Regards
Mike
> [ 1.330757] OF: graph: no port node found in /etr@72050000
> [ 1.330987] OF: graph: no port node found in /funnel_major@72010000
> [ 1.331238] OF: graph: no port node found in /ptm0@73440000
> [ 1.331451] coresight-etm4x 73440000.ptm0: CPU0: Cortex-A57 ETM v4.0 initialized
> [ 1.331482] OF: graph: no port node found in /ptm1@73540000
> [ 1.331689] coresight-etm4x 73540000.ptm1: CPU1: Cortex-A57 ETM v4.0 initialized
> [ 1.331719] OF: graph: no port node found in /ptm2@73640000
> [ 1.331938] coresight-etm4x 73640000.ptm2: CPU2: Cortex-A57 ETM v4.0 initialized
> [ 1.331944] extcon-disp-state extcon:disp-state: cable 47 state 0
> [ 1.331946] Extcon AUX1(HDMI) disable
> [ 1.331976] OF: graph: no port node found in /ptm3@73740000
> [ 1.332192] coresight-etm4x 73740000.ptm3: CPU3: Cortex-A57 ETM v4.0 initialized
> [ 1.332250] OF: graph: no port node found in /replicator@72040000
> [ 1.332305] coresight-replicator-qcom 72040000.replicator: REPLICATOR 1.0 initialized
> [ 1.332350] OF: graph: no port node found in /stm@72070000
> [ 1.332386] coresight-stm 72070000.stm: stm_register_device failed, probing deffered
> (omitted 64 lines)
> [ 1.411751] OF: graph: no port node found in /stm@72070000
> [ 1.412025] coresight-stm 72070000.stm: STM32 initialized
> (omitted 212 lines)
>
> Do you have an idea what I did wrong? In the end, I want to be able to follow the steps described here:
>
https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3275/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/debugging_PTM.html#wwpID0E0NC0HA
>
> Best regards,
> Vincent
>
> (P.S. There was a problem sending this email a first time, but it should work now)
> _______________________________________________
> CoreSight mailing list -- coresight@lists.linaro.org
> To unsubscribe send an email to coresight-leave@lists.linaro.org
--
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK