| Message ID | 20171209153305.11012-1-j.neuschaefer@gmx.net |
|---|---|
| State | Accepted, archived |
| Headers | show |
| Series | dt-bindings: chosen: Document linux,initrd-{start,end} | expand |
On Sat, Dec 09, 2017 at 04:33:02PM +0100, Jonathan Neuschäfer wrote: > These properties have been in use for a very long time (at least since > 2005), but were never documented in chosen.txt. > > Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> > --- > Documentation/devicetree/bindings/chosen.txt | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) Applied. I'm inclined to say to document these in the DT spec, but I'm assuming there was some reason why they weren't put into the spec (ePAPR at the time) originally. Rob -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Fri, Dec 15, 2017 at 03:01:47PM -0600, Rob Herring wrote: > On Sat, Dec 09, 2017 at 04:33:02PM +0100, Jonathan Neuschäfer wrote: > > These properties have been in use for a very long time (at least since > > 2005), but were never documented in chosen.txt. > > > > Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> > > --- > > Documentation/devicetree/bindings/chosen.txt | 15 +++++++++++++++ > > 1 file changed, 15 insertions(+) > > Applied. Thanks. > I'm inclined to say to document these in the DT spec, but I'm assuming > there was some reason why they weren't put into the spec (ePAPR at the > time) originally. I don't know about the history of this, but I think if and when these properties were specified in DTSpec, they should get a non-linux-specific name, such as initrd-start/initrd-end, and a compatibility fallback to linux,initrd-* (similar to stdout-path and phandle). Jonathan Neuschäfer
diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt index e3b13ea7d2ae..45e79172a646 100644 --- a/Documentation/devicetree/bindings/chosen.txt +++ b/Documentation/devicetree/bindings/chosen.txt @@ -120,3 +120,18 @@ e.g. While this property does not represent a real hardware, the address and the size are expressed in #address-cells and #size-cells, respectively, of the root node. + +linux,initrd-start and linux,initrd-end +--------------------------------------- + +These properties hold the physical start and end address of an initrd that's +loaded by the bootloader. Note that linux,initrd-start is inclusive, but +linux,initrd-end is exclusive. +e.g. + +/ { + chosen { + linux,initrd-start = <0x82000000>; + linux,initrd-end = <0x82800000>; + }; +};
These properties have been in use for a very long time (at least since 2005), but were never documented in chosen.txt. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> --- Documentation/devicetree/bindings/chosen.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+)