A data structure for describing hardware. passed in boot time to kernel
Questions tagged [device-tree]
136 questions
2
votes
0 answers
Device tree and passing parameter to serial driver from specyfic device overlay
I would like to pass linux,rs485-enabled-at-boot-time; flag/parameter to serial port driver configuration for sc16is752 device defined by this device tree overlay (unmodified file from Raspbian):
/dts-v1/;
/plugin/;
/ {
compatible =…
Kamil
- 749
- 1
- 8
- 26
1
vote
0 answers
Devicetree parallel CSI OV7670
I'm currently trying to get an image with fswebcam out of my OV7670 camera, but I only get a completly green image.
Could you look over my devicetree if I made some obvious mistakes?
board-file.dts:
&csi1 {
status = "okay";
pinctrl-names =…
Marcel T
- 11
1
vote
1 answer
In Linux device tree syntax, what happens when duplicate labels appear?
I wonder if it is allowed and by this possible that duplicate labels within a *.dts device tree file appear and if so what happens then?
Does a new label allow to overwrite/redefine the old label, for instance?
To make the question more transparent…
humanityANDpeace
- 14,392
0
votes
0 answers
What are pinctrl states and handles in relation to the device tree?
I have a node with the following
mmc0: mmc@11230000 {
compatible = "mediatek,mt8186-mmc", "mediatek,mt8183-mmc";
pinctrl-names = "default", "state_uhs", "state_eint";
pinctrl-0 = <&mmc0_default>;
…
Bret Joseph
- 409
0
votes
0 answers
Can we automatically label device tree with symbols?
Is it possible to use device tree compiler to automatically label nodes when generating device tree source from device tree binary/source?
I can assign the labels from the symbols to their respectful node paths using dtc -A for example. I would like…
Bret Joseph
- 409
0
votes
1 answer
Where is the device tree on the Linux machine, for e.g., Debian or Ubuntu?
These days we have device tree. I am wondering where can I see the device tree in my PC - i.e.
Debian - Release: 9.11.
When I look at the kernel config, I don't see the device tree. How come device tree isn't there in my PC.
vi …
tannoy connect
- 289
0
votes
1 answer
DeviceTree Overlay fails
Following setup here:
TinkerBoard-S with rk3288 Chip running armbian with legacy Kernel 4.4.199
Now I would like to add an overlay to the existing one. Here is how the existing one looks like:
dsi@ff960000 {
reg = <0x0 0xff960000…
C. Hediger
- 113