linux-kernel - Re: [PATCH v2 1/2] mfd: bd96801: Add ERRB IRQ

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Message-ID: <20241009161113.GA661995@google.com>
Date: Wed, 9 Oct 2024 17:11:13 +0100
From: Lee Jones <lee@...nel.org>
To: Matti Vaittinen <mazziesaccount@...il.com>
Cc: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] mfd: bd96801: Add ERRB IRQ

On Thu, 03 Oct 2024, Matti Vaittinen wrote:

> The ROHM BD96801 "scalable PMIC" provides two physical IRQs. The ERRB
> handling can in many cases be omitted because it is used to inform fatal
> IRQs, which usually kill the power from the SOC.
> 
> There may however be use-cases where the SOC has a 'back-up' emergency
> power source which allows some very short time of operation to try to
> gracefully shut down sensitive hardware. Furthermore, it is possible the
> processor controlling the PMIC is not powered by the PMIC. In such cases
> handling the ERRB IRQs may be beneficial.
> 
> Add support for ERRB IRQs.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
> ---
> Revision history:
> New series (only ERRB addition)
> v2:
> 	- Suffle local variables in probe()
> 	- Unify and improve the error prints when adding regmap IRQ chip for
> 	  INTB or ERRB fails.
> v1:
> 	- use devm allocation for regulator_res
> 	- use goto skip_errb instead of an if (errb)
> 	- constify immutable structs
> 
> Old series (All BD96801 functionality + irqdomain and regmap changes)
> v2 => v3:
> 	- No changes
> v1 => v2:
> 	- New patch
> ---
>  drivers/mfd/rohm-bd96801.c | 275 ++++++++++++++++++++++++++++++++-----
>  1 file changed, 241 insertions(+), 34 deletions(-)

Are the 2 patches tied together or can they be taken separately?

-- 
Lee Jones [李琼斯]