Re: [PATCH 1/2] libfdt: overlay: Allow resolving phandle symbols

[Ayush Singh <ayush@beagleboard.org>]

On 9/23/24 14:42, Geert Uytterhoeven wrote:

> Hi David,
>
> On Mon, Sep 23, 2024 at 10:41 AM David Gibson
> <david@gibson.dropbear.id.au> wrote:
>> On Mon, Sep 23, 2024 at 10:22:03AM +0200, Geert Uytterhoeven wrote:
>>> On Mon, Sep 23, 2024 at 5:41 AM David Gibson
>>> <david@gibson.dropbear.id.au> wrote:
>>>> So, essentially you're just adding new labels as aliases to existing
>>>> labels?
>>>>
>>>> Ok, I can see at least two ways of doing that which I think are a more
>>>> natural fit than allowing symbols to be phandles.
>>> [...]
>>>
>>>> # Method 2: /aliases
>>> Does the (Linux) DT overlay code support updating aliases?
>>> Last time I needed that (almost a decade ago), it did not.
>> Huh.  I hadn't realised the kernel kept a separate cache of aliases
>> that wasn't updated.  Assuming that's still the case, that would
>> complicate matters a bit.
> Indeed.
>
>>> "[PATCH/RFC 0/3] of/overlay: Update aliases when added or removed"[1]
>>> was never applied, due to me never getting to all of the requested changes.
>>>
>>> [1] https://lore.kernel.org/all/1435675876-2159-1-git-send-email-geert+renesas@glider.be/
> FTR, if anyone is interested in this, IIRC I have an updated version
> somewhere that did implement some of the requested changes. Just ask.
>
> Thanks!
>
>
> Gr{oetje,eeting}s,
>
>                          Geert
>
Hi, I would be interested in picking up that patch series and getting it 
merged. Regardless of whether we use alias for mikroBUS, I think it is 
high time the devicetree support is improved in Linux kernel.


Ayush Singh