On 4/17/25 12:51 PM, Adam Ford wrote:
On Thu, Apr 17, 2025 at 2:24 AM Marek Vasut <ma...@denx.de> wrote:

On 4/17/25 1:58 AM, Fabio Estevam wrote:
On Wed, Apr 16, 2025 at 8:47 PM Marek Vasut <ma...@denx.de> wrote:

You are not supposed to use "clock-output-names" for clock look up.
You are supposed to use "clocks"/"clock-names" DT properties and then
resolve the remote clock from information in those.

What do you think about registering the osc clocks like this?

https://paste.debian.net/1369857/

It would be good to include the patch inline in this email, not in a
link to some paste site which will go away.

This also does not work in case 24 MHz or 32 kHz clock are provided by
something else than an xtal , and it will also lead to instantiation of
the same clock twice. The clock are already described in DT as
fixed-clock , there is fixed clock driver which binds to those clock
based on their DT description , the problem here seems to be related to
the look up of those 24 MHz or 32 kHz clock, not their (re)registration.


Since that patch changed the lookup of the clock name broke USB on
multiple boards, I would like to recommend we revert it until a proper
solution is found.
This would also re-introduce the bogus clock-osc-24m look up, which requires workarounds in DT, so no. Let's actually fix this instead of reinstating broken workarounds.

Does clk_resolve_parent_clk() in clk_mux_fetch_parent_index() not resolve the mux index correctly or something ? Do you by any chance have some -u-boot.dtsi modification to the clock-controller@30380000 node which changes clocks/clock-names somehow ? Which mux does not get correctly resolved here ? Is there a simple reproducer ?

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