Re: [PATCH v5 4/4] net: stmmac: Update the name of property 'clk_csr'

[Jianguo Zhang]

Dear Krzysztof,
	Thanks for your comment.

On Fri, 2022-09-23 at 20:15 +0200, Krzysztof Kozlowski wrote:
> On 23/09/2022 20:14, Krzysztof Kozlowski wrote:
> > > This is going to break MT2712e on old devicetrees.
> > > 
> > > The right way of doing that is to check the return value of
> > > of_property_read_u32()
> > > for "snps,clk-csr": if the property is not found, fall back to
> > > the old "clk_csr".
> > 
> > I must admit - I don't care. That's the effect when submitter
> > bypasses
> > DT bindings review (81311c03ab4d ("net: ethernet: stmmac: add
> > management
> > of clk_csr property")).
> > 
> > If anyone wants ABI, please document the properties.
> > 
> > If out-of-tree users complain, please upstream your DTS or do not
> > use
> > undocumented features...
> > 
> 
> OTOH, as Angelo pointed out, handling old and new properties is quite
> easy to achieve, so... :)
> 
So, the conclusion is as following:

1. add new property 'snps,clk-csr' and document it in binding file.
2. parse new property 'snps,clk-csr' firstly, if failed, fall back to
old property 'clk_csr' in driver.

Is my understanding correct?

> Best regards,
> Krzysztof
> 
BRS
Jianguo