SK-AM62B-P1: Which device tree file is in effect

Tommy Shelby

Part Number: SK-AM62B-P1

Tool/software:

About SK-AM62B-P1 device which dts files is effect for this

k3-am625-beagleplay-csi2-ov5640.dtbo k3-am62-lp-sk.dtb
k3-am625-beagleplay-csi2-tevi-ov5640.dtbo k3-am62-lp-sk-lincolntech-lcd185-panel.dtbo
k3-am625-beagleplay.dtb k3-am62-lp-sk-microtips-mf101hie-panel.dtbo
k3-am625-beagleplay-lincolntech-lcd185-panel.dtbo k3-am62-lp-sk-nand.dtbo
k3-am625-sk-dmtimer-pwm.dtbo k3-am62x-sk-csi2-imx219.dtbo
k3-am625-sk.dtb k3-am62x-sk-csi2-ov5640.dtbo
k3-am625-sk-ecap-capture.dtbo k3-am62x-sk-csi2-tevi-ov5640.dtbo
k3-am625-sk-lincolntech-lcd185-panel.dtbo k3-am62x-sk-csi2-v3link-fusion.dtbo
k3-am625-sk-mcspi-loopback.dtbo k3-am62x-sk-eqep.dtbo
k3-am625-sk-microtips-mf101hie-panel.dtbo k3-am62x-sk-hdmi-audio.dtbo
k3-am625-sk-microtips-mf103hie-lcd2.dtbo k3-am62x-sk-hdmi-disable-fastboot.dtbo
k3-am625-sk-pwm.dtbo k3-am62x-sk-lpm-wkup-sources.dtbo
k3-am625-sk-rpi-hdr-ehrpwm.dtbo k3-am62x-sk-mcan.dtbo

4 days ago

0 Bin Liu 4 days ago

TI__Guru*** 145986 points

Hi Tommy,

k3-am625-sk.dtb is loaded on SK-AM62B-P1. All those "*.dtbo" are not loaded by default. They have to be set in $name_overlays U-Boot ENV then U-Boot will load them.

0 Tommy Shelby 4 days ago in reply to Bin Liu

Prodigy 60 points

Hi Bin

Thanks for your explanation. So, the k3-am62-lp-sk.dtb will not be loaded, right?

Also, in which file I can set the $name_overlays variable?

Thanks

0 Bin Liu 4 days ago in reply to Tommy Shelby

TI__Guru*** 145986 points

I am routing your query to our u-boot expert for comments.

+1 Aparna Patra 3 days ago in reply to Tommy Shelby

TI__Genius 12030 points

Hi Tommy,

Tommy Shelby said:
So, the k3-am62-lp-sk.dtb will not be loaded, right?

This file will be loaded by default to boot Linux on your SOC, by U-boot. The one you have mentioned is the dtb file for LP(Low Power) version. k3-am625-sk.dtb is loaded on SK-AM62B-P1.

There are additional .dtbo files that can be loaded on top of the base .dtb file. We apply these device tree overlay(.dtbo) files at the U-boot stage. $name_overlays variable is used for this.
You can set the U-boot env variables either by stopping at the U-boot prompt or adding the variable to the uEnv.txt file in the boot partition of your SD card.

Regards,
Aparna

0 Tommy Shelby 3 days ago in reply to Aparna Patra

Prodigy 60 points

Hi Apama

Thanks !

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SK-AM62B-P1: Which device tree file is in effect