Re: [PATCH v10 07/20] dt-bindings: mtd: Document boolean NAND ECC properties

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Hi Rob,

Rob Herring <robh@xxxxxxxxxx> wrote on Thu, 4 Jun 2020 17:08:04 -0600:

> On Wed, Jun 03, 2020 at 07:57:46PM +0200, Miquel Raynal wrote:
> > Document nand-use-soft-ecc-engine and nand-no-ecc-engine properties.
> > The former is here to force software correction, the latter prevents
> > any correction to happen.
> > 
> > These properties (along with nand-ecc-engine) are supposed to be more
> > accurate than the current nand-ecc-modes wich is very misleading and
> > very often people think it is mandatory while the core should be
> > relied upon to decide which correction to handle.
> > 
> > nand-ecc-mode was already inacurate, but it becomes totally
> > problematic with setups where there are several hardware engines.
> > 
> > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/mtd/nand-controller.yaml | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
> > index 0969d2e6720b..a3750978ebb8 100644
> > --- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml
> > +++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
> > @@ -68,6 +68,12 @@ patternProperties:
> >            3/ The ECC engine is external, in this case the phandle should
> >            reference the specific ECC engine node.
> >  
> > +      nand-use-soft-ecc-engine: true
> > +        description: Use a software ECC engine.  
> 
> Humm, I'm surprised this is valid YAML. nand-use-soft-ecc-engine can't 
> be both a boolean and a map (aka schema, aka dict).
> 
> nand-use-soft-ecc-engine:
>   type: boolean
>   description: ...
> 

Ok, I might have been inspired from this line in example-schema.yaml:

  interrupt-controller: true                                                                                                   
    # The core checks this is a boolean, so just have to list it here to be                                                    
    # valid for this binding.


Thanks for the review, I'll correct it.

Cheers,
Miquèl



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