I am developing a board that connects an FPGA and a JAXi via PCIe Gen2. However, the link is unstable, and sometimes it links up while other times it does not. Is there a way to check the PCIe LTSSM log of JAXi?
PCIE_RP_APPL_DEBUG_0 register shall help. Which controller are you using?
Thank you for your reply.
I am using the controller #5, lane 0.
C5 register 0x141a00d0. bit 8:3 is the LTSSM status.
LTSSM state definition.
How do I dump the PCIE_RP_APPL_DEBUG_0 register?
Do I need to edit the kernel directly and disable “enable-power-down” with the following article?
Which jetpack version are you using here?
I am using JetPack 4.6.3.
This is a very old version that I don’t even remember the detail. So are you able to see lspci show your controller C5 there even though PCIe device is not detected?
No, I don’t.
When a FPGA as PCIe device is not detected, lspci does not show any controller and device.
Please check if there is “nvidia,enable-power-down” in the PCIe C5 of device tree. Remove that and it shall make controller be still alive even though no PCIe device is detected.
Thank you.
I tried building the kernel using “nvbuild.sh” based on the following article, but the error occurs and I gave up.
Building kernel-4.9 sources
make[1]: Nothing to be done for ‘/home/melco1/nvidia/kernel_build’.
#
# configuration written to .config
#
scripts/kconfig/conf --silentoldconfig Kconfig
make: Nothing to be done for ‘/home/melco1/nvidia/kernel_build’.
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK include/config/kernel.release
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK include/generated/uapi/linux/version.h
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK include/generated/utsrelease.h
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK scripts/mod/devicetable-offsets.h
CHK include/generated/timeconst.h
CHK include/generated/bounds.h
CHK include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
CHK include/generated/compile.h
GZIP kernel/config_data.gz
CHK kernel/config_data.h
make: Nothing to be done for ‘/home/melco1/nvidia/kernel_build’.
CHK scripts/mod/devicetable-offsets.h
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-hdmi-hdmi.dtb
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-hdmi-hdmi-imx274-hdmiin.dtb
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-as-0888.dtb
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0002-lanai.dtb
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen-industrial/kernel-dts/tegra194-p2888-0008-p2822-0000-maxn.dtb
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-imx185_v1.dtb
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-maxn.dtb
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-overlay.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-hdr40.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-adafruit-sph0645lm4h.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-adafruit-uda1334a.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-fe-pi-audio.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-respeaker-4-mic-array.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-respeaker-4-mic-lin-array.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-m2ke.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-csi.dtbo
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-adafruit-sph0645lm4h.dtbo
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-fe-pi-audio.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-hdr40.dtbo
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-respeaker-4-mic-array.dtbo
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-hdr40.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-adafruit-sph0645lm4h.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-as-0006-p2822-0000.dtb
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-adafruit-uda1334a.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-fe-pi-audio.dtbo
DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-respeaker-4-mic-array.dtbo
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DTC arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-dual-imx274.dtbo
cp -u arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-base.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-ape-cam.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-edp.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-dsi-hdmi-dp.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-hdmi-dp.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-hdmi-dp-imx274-hdmiin.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-dsi-dp.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-hdmi-primary-p3310-1000-c03-00.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-hdmi-primary-p3310-1000-a00-00.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-base-mods-display.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-imx274.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-imx185_v1.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-00-lc898212.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-hdmi-primary-p3310-1000-a00-00-imx274.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-hdmi-primary-p3310-1000-c03-00-imx274.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-ape-cam.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-imx185_v1.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-dp.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-hdmi-hdmi.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-dsi-hdmi-hdmi-imx274-hdmiin.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-null_dsi-2hdmi-imx274-hdmiin.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c00-00-auo-1080p-edp.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-e3313-1000-a00-00-e2598.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3489-1000-a00-00-ucm1.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3489-1000-a00-00-ucm2.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3489-1000-a00-00-e2598.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3489-0888-a00-00-base.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3489-0888-a00-00-e2598.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-as-0888.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0002-p3509-0000-a01.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0002-lanai.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen-industrial/kernel-dts/tegra194-p2888-0008-e3366-1199.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen-industrial/kernel-dts/tegra194-p2888-0008-p2822-0000.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen-industrial/kernel-dts/tegra194-p2888-0008-p2822-0000-maxn.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen-industrial/kernel-dts/tegra194-p2888-0008-p2822-0000-noecc.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen-industrial/kernel-dts/tegra194-p2888-0008-p2822-0000-safety.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-kexec.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-imx274-hdmi.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-imx185_v1.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-maxn.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-e3366-1199.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0006-e3366-1199.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-as-0006-p2822-0000.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-as-p3668-p2822-0000.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000.dtb arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-a00-overlay.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-hdr40.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-adafruit-sph0645lm4h.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-adafruit-uda1334a.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-fe-pi-audio.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-respeaker-4-mic-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-respeaker-4-mic-lin-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-m2ke.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-csi.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3310-1000-c03-00-base-hdr30.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-adafruit-sph0645lm4h.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-adafruit-uda1334a.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-fe-pi-audio.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-hdr40.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-m2ke.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-respeaker-4-mic-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t18x/lanai/kernel-dts/tegra186-p3636-0001-p3509-0000-a01-respeaker-4-mic-lin-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-hdr40.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-adafruit-sph0645lm4h.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-adafruit-uda1334a.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-fe-pi-audio.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-respeaker-4-mic-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-respeaker-4-mic-lin-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-m2ke.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-camera-imx477-imx219.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-camera-imx477-dual.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/jakku/kernel-dts/tegra194-p3668-all-p3509-0000-camera-imx219-dual.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-hdr40.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-adafruit-sph0645lm4h.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-adafruit-uda1334a.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-fe-pi-audio.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-respeaker-4-mic-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-respeaker-4-mic-lin-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-m2ke.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/galen/kernel-dts/tegra194-p2888-0001-p2822-0000-csi.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-hdr40.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-adafruit-sph0645lm4h.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-adafruit-uda1334a.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-fe-pi-audio.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-respeaker-4-mic-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-respeaker-4-mic-lin-array.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-csi.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-dual-imx274.dtbo arch/arm64/boot/dts/ddot/ddot/ddot/ddot/ddot/ddot/hardware/nvidia/platform/t19x/mccoy/kernel-dts/tegra194-p2888-0004-e3900-0000-imx274.dtbo arch/arm64/boot/dts/
make: Nothing to be done for ‘/home/melco1/nvidia/kernel_build’.
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK include/config/kernel.release
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK include/generated/uapi/linux/version.h
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK include/generated/utsrelease.h
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
CHK scripts/mod/devicetable-offsets.h
CHK include/generated/timeconst.h
CHK include/generated/bounds.h
CHK include/generated/asm-offsets.h
CALL scripts/checksyscalls.sh
CHK include/generated/compile.h
CHK kernel/config_data.h
DTC drivers/misc/mods/mods.dtb
DTB drivers/misc/mods/mods.dtb.S
AS [M] drivers/misc/mods/mods.dtb.o
LD [M] drivers/misc/mods/mods.o
rm drivers/misc/mods/mods.dtb drivers/misc/mods/mods.dtb.S
make: Entering directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
Building modules, stage 2.
make: Leaving directory ‘/home/melco1/nvidia/kernel_build/Linux_for_Tegra/source/public/kernel/kernel-4.9’
MODPOST 664 modules
CC drivers/misc/mods/mods.mod.o
LD [M] drivers/misc/mods/mods.ko
Error: Missing kernel image /home/melco1/nvidia/kernel_build/arch/arm64/boot/Image
You should read developer guide document but not some random post from forum…
Yes. I read how to build the kernel in the following developer guide, but error occured at “4. Build the kernel”.
“nvbuild.sh” was made by nvidia, so I don’t fully understand it.
Kernel Customization — Jetson Linux
Developer Guide 34.1 documentation
Make sure you read the correct version of document… You are posting me some rel-34 and rel-35 document.
You should pick one rel-32 document and read…
Jetpack4 are all under rel-32 release so you should never read rel-34/rel-35/rel-36 document…
I am sorry.
I will try again using the document you provided.
Incidentally, you can find your L4T release (which is just Ubuntu plus NVIDIA content) via “head -n 1 /etc/nv_tegra_release”. Then documents for that release are here:
https://developer.nvidia.com/linux-tegra
For device tree you don’t really need to build from the kernel itself. If you are editing just one node, then consider starting with the current device tree, e.g., from the file used in “/boot” (probably listed in “/boot/extlinux/extlinux.conf”) or extracting it. If you don’t already have dtc, then:
sudo apt-get install device-tree-compiler
To extract the running system’s device tree:
dtc -I fs -O dts -o extracted.dts /proc/device-tree
To convert an existing binary tree into source (assuming the name to start with is tree.dtb):
dtc -I dtb -O dts -o tree.dts tree.dtb
To convert an edited source tree back to binary (assuming start name is edited.dts):
dtc -I dts -O dtb -o recompiled.dtb edited.dts
The tree itself is just human-readable text if it is in source (.dts) format. Starting with a known working tree and then simply editing is often the better choice compared to building it from scratch in kernel source. I would recommend to find the actual binary tree file (.dtb) used and work on that as source, then compile it back with a new name; that name can be put in an alternate boot entry of “/boot/extlinux/extlinux.conf” and you’ll save yourself some sanity and time.
Thank you for the advice. However, I failed both in rebuilding the kernel and in modifying the device tree.
I removed “nvidia,enable-power-down” from 141a0000.pcie and rebooted, but lspci shows nothing. What should it correctly show?
The next thing to check is how did you update your new dtb here?
I mean, building a code is one thing, and how to update that to the board is another one.
I prepared two JAXis. One was flashed from custom building kernel, while another was modified the device tree.
I updated the device tree with following process.
$ sudo dtc -I dtb -O dts -o <new_tree>.dts <existing_tree>.dtb
////////// I deleted “nvidia,enable-power-down” from 141a0000 of <new_tree>.dts //////////
$ sudo dtc -I dts -O dtb -o <existing_tree>.dtb <new_tree>.dts