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From: Marco Felsch <m.felsch@pengutronix.de>
To: Mark Brown <broonie@kernel.org>
Cc: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>,
	Support Opensource <Support.Opensource@diasemi.com>,
	"lee.jones@linaro.org" <lee.jones@linaro.org>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"linus.walleij@linaro.org" <linus.walleij@linaro.org>,
	"bgolaszewski@baylibre.com" <bgolaszewski@baylibre.com>,
	"joel@jms.id.au" <joel@jms.id.au>,
	"andrew@aj.id.au" <andrew@aj.id.au>,
	"lgirdwood@gmail.com" <lgirdwood@gmail.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
	"linux-aspeed@lists.ozlabs.org" <linux-aspeed@lists.ozlabs.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"kernel@pengutronix.de" <kernel@pengutronix.de>
Subject: Re: [PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage selection documentation
Date: Thu, 12 Dec 2019 17:21:53 +0100
Message-ID: <20191212162152.5uu3feacduetysq7@pengutronix.de> (raw)
In-Reply-To: <20191212161019.GF4310@sirena.org.uk>

On 19-12-12 16:10, Mark Brown wrote:
> On Wed, Dec 11, 2019 at 06:09:18PM +0100, Marco Felsch wrote:
> 
> > so one argument more for my solution. Also we don't configure the "pad"
> > to be a vsel/ena-pin. The hw-pad can only be a gpio or has an alternate
> > function (WDKICK for GPIO0, Seq. SYS_EN for GPIO2, Seq. PWR_EN for GPIO4).
> > Instead we tell the regulator to use _this_ GPIO e.g. for voltage
> > selection so we go the other way around. My last argument why pinctrl
> > isn't the correct place is that the GPIO1 can be used for
> > regulator-0:vsel-in and for regulator-1:enable-in. So this pad would
> > have different states which is invalid IMHO.
> 
> Note that there's two bits to my concern - one is if we should be using
> gpiolib or pinctrl, the other is what's driving the input (whichever API
> it's configured through) which didn't seem to be mentioned.

gpiolib or pinctrl:
I pointed out all my arguments above so I think it is time for Linus.

"... what's driving the input ..":
Sorry I didn't get you here. What did you mean? The input is driven by
the host. This can be any gpio line and in my case it is a gpio line
driven by the soc-hw during a suspend operation.

Regards,
  Marco

  reply index

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-29 17:25 [PATCH v3 0/6] DA9062 PMIC features Marco Felsch
2019-11-29 17:25 ` [PATCH v3 1/6] gpio: treewide rename gpio_chip_hwgpio to gpiod_to_offset Marco Felsch
2019-12-02  2:59   ` Andrew Jeffery
2019-11-29 17:25 ` [PATCH v3 2/6] gpio: make gpiod_to_offset() available for other users Marco Felsch
2019-12-02  3:00   ` Andrew Jeffery
2019-11-29 17:25 ` [PATCH v3 3/6] dt-bindings: mfd: da9062: add regulator voltage selection documentation Marco Felsch
2019-12-04 13:46   ` Mark Brown
2019-12-10  9:41     ` Marco Felsch
2019-12-11 16:14       ` Adam Thomson
2019-12-11 17:09         ` Marco Felsch
2019-12-12 15:08           ` Linus Walleij
2019-12-12 15:55             ` Marco Felsch
2019-12-12 16:10           ` Mark Brown
2019-12-12 16:21             ` Marco Felsch [this message]
2019-12-12 16:51               ` Mark Brown
2019-12-16  8:55                 ` Marco Felsch
2019-12-16 11:44                   ` Mark Brown
2019-12-17  7:35                     ` Marco Felsch
2019-12-17 12:58                       ` Mark Brown
2020-01-07  8:36                         ` Marco Felsch
2020-01-07 13:09                           ` Mark Brown
2020-01-07 13:38                             ` Marco Felsch
2020-01-14 15:43                               ` Mark Brown
2019-12-16 16:32                   ` Adam Thomson
2019-12-17  9:00                     ` Marco Felsch
2019-12-17  9:12                       ` Marco Felsch
2019-12-17  9:53                       ` Adam Thomson
2019-12-17 12:31                         ` Marco Felsch
2019-12-17 13:13                           ` Adam Thomson
2019-12-16 16:32                   ` Adam Thomson
2019-12-16 12:28               ` Linus Walleij
2019-11-29 17:25 ` [PATCH v3 4/6] regulator: da9062: add voltage selection gpio support Marco Felsch
2019-11-29 17:25 ` [PATCH v3 5/6] dt-bindings: mfd: da9062: add regulator gpio enable/disable documentation Marco Felsch
2019-12-13 22:23   ` Rob Herring
2019-12-16 16:31   ` Lee Jones
2019-11-29 17:25 ` [PATCH v3 6/6] regulator: da9062: add gpio based regulator dis-/enable support Marco Felsch
2019-12-02 11:44 ` [PATCH v3 0/6] DA9062 PMIC features Linus Walleij
2019-12-02 12:04   ` Lee Jones

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