Re: [PATCH v1 5/9] phy: qcom-qmp: Get dp_com I/O resource by index

From: Stephen Boyd
Date: Wed Aug 26 2020 - 17:32:43 EST


Quoting Bjorn Andersson (2020-08-25 21:36:16)
> On Tue 25 Aug 21:47 CDT 2020, Stephen Boyd wrote:
>
> > The dp_com resource is always at index 1 according to the dts files in
> > the kernel. Get this resource by index so that we don't need to make
> > future additions to the DT binding use 'reg-names'.
> >
>
> Afaict the DT binding for the USB/DP phy defines that there should be a
> reg name of "dp_com" and the current dts files all specifies this. Am I
> missing something?

Yes the binding enforces this but this patch is removing that
enforcement and instead mandating that dp_com is always at index 1 (i.e.
the second one) so that we can add the DP serdes region directly after
and avoid adding yet another reg-names property. I changed the binding
for this usb3-dp phy compatible to make reg-names optional as well. I
don't see any gain from using reg-names.

>
> PS. Why isn't this a devm_platform_ioremap_resource{,_byname}()?

Sure. I'll roll that into this patch.