linux-kernel - Re: [PATCH v4 3/6] regulator: pf1550: add support for regulator

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Message-ID: <f2064326-e696-48cc-8f0e-5e51c95548b5@sirena.org.uk>
Date: Wed, 4 Jun 2025 15:25:29 +0100
From: Mark Brown <broonie@...nel.org>
To: Samuel Kayode <samuel.kayode@...oirfairelinux.com>
Cc: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Sebastian Reichel <sre@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
	linux-pm@...r.kernel.org, Abel Vesa <abelvesa@...nel.org>,
	Abel Vesa <abelvesa@...ux.com>, Robin Gong <b38343@...escale.com>,
	Enric Balletbo i Serra <eballetbo@...il.com>
Subject: Re: [PATCH v4 3/6] regulator: pf1550: add support for regulator

On Wed, Jun 04, 2025 at 10:03:52AM -0400, Samuel Kayode wrote:
> On Wed, Jun 04, 2025 at 12:35:21PM +0100, Mark Brown wrote:

> > > +	switch (irq_type) {
> > > +	case PF1550_PMIC_IRQ_SW1_LS:
> > > +		event = REGULATOR_EVENT_OVER_CURRENT;
> > > +	case PF1550_PMIC_IRQ_SW1_HS:
> > > +		event = REGULATOR_EVENT_OVER_CURRENT;
> > > +	case PF1550_PMIC_IRQ_LDO1_FAULT:
> > > +		event = REGULATOR_EVENT_OVER_CURRENT;

> > You appear to be flagging all these events as over current events which
> > doesn't seem entirely plausible.

> It does seem like it but the manual describes these interrupts as "current limit
> interrupt". The interrupts ending in _LS are "low-side current limit interrupt",
> _HS are "high-side current limit interrupt" and _FAULT are "current limit fault
> interrupt".

That at least needs some comments I think, and for the _LS while it's
hard to parse what "low side" means my guess would be that it's a
warning to match the other interrupt being the actual error.

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