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[RFC,1/2] Documentation: devicetree: root node board-revision property documentation

Message ID 1500235256-48937-2-git-send-email-vesa.jaaskelainen@vaisala.com
State New
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Commit Message

Vesa Jääskeläinen July 16, 2017, 8 p.m. UTC 
Board revision is hardware revision for board. Meaning of hardware
revision is defined by device/SoM manufacturer and because of that it is
defined as a string.

Board revision information can be stored in hardware identifier resistors,
eFuses, EEPROM or some other device specific non-volatile storage. It is
expected that bootloader will analyse board revision information and pass
it in device tree to kernel.

Signed-off-by: Vesa Jääskeläinen <vesa.jaaskelainen@vaisala.com>
---
 Documentation/devicetree/booting-without-of.txt | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt
index fb74044..ae8f5ec 100644
--- a/Documentation/devicetree/booting-without-of.txt
+++ b/Documentation/devicetree/booting-without-of.txt
@@ -872,6 +872,7 @@  address which can extend beyond that limit.
   Additional properties for the root node:
 
     - serial-number : a string representing the device's serial number
+    - board-revision : a string representing the board's revision
 
   b) The /cpus node