linux-kernel - Re: [PATCH] Revert "regulator: tps65219: Add TI TPS65214 Regulator Support"

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Message-ID: <CAOCHtYhjSnypDcd5iojg_0KM9aBX6QH+0hMfauGccL6MvyLXzg@mail.gmail.com>
Date: Thu, 19 Jun 2025 18:24:13 -0500
From: Robert Nelson <robertcnelson@...il.com>
To: Shree Ramamoorthy <s-ramamoorthy@...com>
Cc: Dhruva Gole <d-gole@...com>, lgirdwood@...il.com, broonie@...nel.org, 
	aaro.koskinen@....fi, andreas@...nade.info, khilman@...libre.com, 
	rogerq@...nel.org, tony@...mide.com, linux-omap@...r.kernel.org, 
	linux-kernel@...r.kernel.org, m-leonard@...com, praneeth@...com
Subject: Re: [PATCH] Revert "regulator: tps65219: Add TI TPS65214 Regulator Support"

On Thu, Jun 19, 2025 at 2:58 PM Shree Ramamoorthy <s-ramamoorthy@...com> wrote:
>
> Hi,
>
> On 6/19/25 10:35 AM, Dhruva Gole wrote:
> > This reverts commit f1471bc435afa31c8c0c58551922830dc8f4b06b.
>
> I will be sending a patch soon with a fix regarding the devm_kmalloc use in the probe() function.
> I'll keep looking into these bugs to see if there's anything else to fix.
>
> > This was causing boot regressions [1] on many BeagleBoard platforms
> > like the AM62x based BeaglePlay and PocketBeagle-2.
> >
> > [1] https://gist.github.com/DhruvaG2000/75b7d5ced6c09d508ee0ad5ab1f19707

This bug is nasty... ugh! My BeaglePlay (am62) just triggered the same
classic bug on startup.  Seems like it's related to the phase of the
moon/etc.. Something in the PMIC doesn't like what we are doing with
the new devices bolted on top..

Here is my boot log with only f1471bc435afa31c8c0c58551922830dc8f4b06b
reverted https://gist.github.com/RobertCNelson/745bc4f9e219be264722b2093ef03fa8

So there's been 4 patches on "tps65219-regulator.c" :
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/regulator/tps65219-regulator.c?h=v6.16-rc2

f1471bc435afa31c8c0c58551922830dc8f4b06b regulator: tps65219: Add TI
TPS65214 Regulator Support
38c9f98db20a649a1f8454f507608b6aef0c9297 regulator: tps65219: Add
support for TPS65215 Regulator IRQs
3f2e457efdad5af4164f155bd7ac902258a9b1ce regulator: tps65219: Add
support for TPS65215 regulator resources
8c04144e156b49980a786e80c855e41f6c71685c regulator: tps65219: Update
struct names

Back to retesting the 3 other commits tomorrow!

Fun note... I'm testing 4 PocketBeagle2 's and 2 BeaglePlays,
depending on the day one board will trigger this bug 80% of the time,
someday it takes hours to trigger.

Regards,

-- 
Robert Nelson
https://rcn-ee.com/