On Tue, Apr 28, 2015 at 2:29 AM, Paul Kocialkowski <contact@xxxxxxxx> wrote: > Open firmware is already using the serial-number property for passing the > device's serial number from the bootloader to the kernel. In addition, lshw > already has support for scanning this property. > > 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 (note that the soc_id property in the SoC bus > should hold a full account of those bits). > > The serial number is taken as-is from the bootloader, so it is up to the > bootloader to define where the serial number comes from and what length it > should be. Some use cases for the serial number require it to have a maximum > length (e.g. for USB serial number) and some other cases imply more restrictions > on what the serial number should look like (e.g. in Android, the ro.serialno > property is usually a 16-bytes (plus one null byte) representation of a 64 bit > number). > > Signed-off-by: Paul Kocialkowski <contact@xxxxxxxx> Acked-by: Rob Herring <robh@xxxxxxxxxx> What Russell was referring to for submitting is his patch tracker: http://www.arm.linux.org.uk/developer/patches/ Rob > --- > Documentation/devicetree/booting-without-of.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt > index 7768518..95fc385 100644 > --- a/Documentation/devicetree/booting-without-of.txt > +++ b/Documentation/devicetree/booting-without-of.txt > @@ -828,6 +828,10 @@ address which can extend beyond that limit. > name may clash with standard defined ones, you prefix them with your > vendor name and a comma. > > + Additional properties for the root node: > + > + - serial-number : a string representing the device's serial number > + > b) The /cpus node > > This node is the parent of all individual CPU nodes. It doesn't > -- > 1.9.1 > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
