On Wed, 30 Sep 2020 17:22:54 -0700 (PDT), in
gmane.comp.hardware.beagleboard.user Joshua Park
<joshua.park0312-re5jqeeqqe8avxtiumw...@public.gmane.org> wrote:
>Hi all,
>
>I'm trying to edit the /proc/device-tree/model file in the
>debian-10.3-iot-armhf-2020-04-06 version file system. I have tried as root
>and changed the permissions of the file and its parent directories but the
>file remains unwritable. Can anyone tell me how I am supposed to edit this
>file?
You don't... It doesn't exist as a file, just a virtual name in the
file system. When you read it, the OS generates the data it gives to you.
https://tldp.org/LDP/Linux-Filesystem-Hierarchy/html/proc.html
I suspect you need to edit the appropriate device tree source file,
compile it into a DTB, and install that DTB where ever u-boot is looking...
debian@beaglebone:~$ cat /proc/device-tree/model
TI AM335x BeagleBone Blackdebian@beaglebone:~$
debian@beaglebone:~$ grep -i "TI AM335x BeagleBone Black"
/opt/source/dtb-4.19-ti/src/arm/*.dts
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-audio.dts: model = "TI
AM335x BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-bbb-exp-c.dts: model = "TI
AM335x BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-bbb-exp-r.dts: model = "TI
AM335x BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-bbbmini.dts: model = "TI
AM335x BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack.dts: model = "TI AM335x
BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-roboticscape.dts: model =
"TI AM335x BeagleBone Black RoboticsCape";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-uboot.dts: model = "TI
AM335x BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-uboot-univ.dts: model =
"TI AM335x BeagleBone Black";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-wireless.dts: model = "TI
AM335x BeagleBone Black Wireless";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-wireless-roboticscape.dts:
model = "TI AM335x BeagleBone Black Wireless RoboticsCape";
/opt/source/dtb-4.19-ti/src/arm/am335x-boneblack-wl1835mod.dts: model = "TI
AM335x BeagleBone Black";
debian@beaglebone:~$
--
Dennis L Bieber
--
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