lkml.org 
[lkml]   [2018]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH V8 18/21] dt-bindings: csky CPU Bindings
On Fri, Oct 12, 2018 at 06:35:51AM -0500, Rob Herring wrote:
> On Fri, Oct 12, 2018 at 12:42:53PM +0800, Guo Ren wrote:
> > This patch adds the documentation to describe that how to add cpu nodes in
> > dts for SMP.
> >
> > Signed-off-by: Guo Ren <ren_guo@c-sky.com>
> > Cc: Rob Herring <robh@kernel.org>
> > ---
> > Documentation/devicetree/bindings/csky/cpus.txt | 70 +++++++++++++++++++++++++
> > 1 file changed, 70 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/csky/cpus.txt
> >
> > diff --git a/Documentation/devicetree/bindings/csky/cpus.txt b/Documentation/devicetree/bindings/csky/cpus.txt
> > new file mode 100644
> > index 0000000..ee3901d
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/csky/cpus.txt
> > @@ -0,0 +1,70 @@
> > +==================
> > +C-SKY CPU Bindings
> > +==================
> > +
> > +The device tree allows to describe the layout of CPUs in a system through
> > +the "cpus" node, which in turn contains a number of subnodes (ie "cpu")
> > +defining properties for every cpu.
> > +
> > +Only SMP system need to care about the cpus node and single processor
> > +needn't define cpus node at all.
> > +
> > +=====================================
> > +cpus and cpu node bindings definition
> > +=====================================
> > +
> > +- cpus node
> > +
> > + Description: Container of cpu nodes
> > +
> > + The node name must be "cpus".
> > +
> > + A cpus node must define the following properties:
> > +
> > + - #address-cells
> > + Usage: required
> > + Value type: <u32>
> > + Definition: must be set to 1
> > + - #size-cells
> > + Usage: required
> > + Value type: <u32>
> > + Definition: must be set to 0
> > +
> > +- cpu node
> > +
> > + Description: Describes one of SMP cores
> > +
> > + PROPERTIES
> > +
>
> What happened to compatible?
Opps ... I forgot it.

- compatible:
Usage: required
Value type: <string>
Definition: must contain "csky", eg:
"csky,610"
"csky,807"
"csky,810"
"csky,860"

>
> > + - device_type
> > + Usage: required
> > + Value type: <string>
> > + Definition: must be "cpu"
> > + - reg
> > + Usage: required
> > + Value type: <u32>
> > + Definition: CPU index
> > + - status:
>
> Drop this. It is implied.
Ok, remove status.

Best Regards
Guo Ren

\
 
 \ /
  Last update: 2018-10-12 14:18    [W:0.049 / U:1.312 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site