diff options
| author | Paul Kocialkowski | 2015-05-21 11:27:03 +0200 |
|---|---|---|
| committer | Simon Glass | 2015-06-05 08:32:07 -0600 |
| commit | 10be5b5d3a8d8dd1aa8be95d339c0fdf498c3687 (patch) | |
| tree | 39c7a6addc8e855cdd0da37561e1224c28e59997 /doc | |
| parent | d8abb46b37fadff0349adb376df6d3ecd09ee7d1 (diff) | |
fdt: Pass the device serial number through devicetree
Before device-tree, the device serial number used to be passed to the kernel
using ATAGs (on ARM). This is now deprecated and all the handover to the kernel
should now be done using device-tree. Thus, this passes the serial-number
property to the kernel using the serial-number property of the root node, as
expected by the kernel.
The serial number is a string that somewhat represents the device's serial
number. It might come from some form of storage (e.g. an eeprom) and be
programmed at factory-time by the manufacturer or come from identification
bits available in e.g. the SoC.
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Reviewed-by: Simon Glass <sgj@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/root.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/root.txt b/doc/device-tree-bindings/root.txt new file mode 100644 index 00000000000..001ccf36ccc --- /dev/null +++ b/doc/device-tree-bindings/root.txt @@ -0,0 +1,4 @@ +The root node + +Optional properties: + - serial-number : a string representing the device's serial number |