[PATCH v4 1/2] Documentation: devicetree: root node serial-number property documentation
contact at paulk.fr
Wed May 6 07:26:13 PDT 2015
Le mercredi 06 mai 2015 à 08:26 -0500, Rob Herring a écrit :
> On Tue, Apr 28, 2015 at 2:29 AM, Paul Kocialkowski <contact at paulk.fr> 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 at paulk.fr>
> Acked-by: Rob Herring <robh at kernel.org>
> What Russell was referring to for submitting is his patch tracker:
Thanks for the hint, that's done now.
> > ---
> > 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
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