From: Dan Murphy <dmurphy@ti.com>
To: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>,
<mazziesaccount@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Jacek Anaszewski <jacek.anaszewski@gmail.com>,
Pavel Machek <pavel@ucw.cz>,
Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-clk@vger.kernel.org>, <linux-gpio@vger.kernel.org>,
<linux-leds@vger.kernel.org>, <linux-rtc@vger.kernel.org>
Subject: Re: [RFC PATCH v2 02/13] dt-bindings: mfd: Document ROHM BD71828 bindings
Date: Thu, 24 Oct 2019 14:35:45 -0500 [thread overview]
Message-ID: <ed0b2aa8-8a70-0341-4ecf-8959f37c53bd@ti.com> (raw)
In-Reply-To: <0182df3c49c6c804ee20ef32fc4b85b50ff45fca.1571915550.git.matti.vaittinen@fi.rohmeurope.com>
Matti
On 10/24/19 6:41 AM, Matti Vaittinen wrote:
> ROHM BD71828 Power management IC integrates 7 buck converters, 7 LDOs,
> a real-time clock (RTC), 3 GPO/regulator control pins, HALL input
> and a 32.768 kHz clock gate.
>
> Document the dt bindings drivers are using.
>
> Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
> ---
>
> No changes since v1
>
> .../bindings/mfd/rohm,bd71828-pmic.txt | 180 ++++++++++++++++++
> 1 file changed, 180 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.txt
I will let maintainers weigh in here but if this is new this should
probably be in the yaml format to avoid conversion in the future
> diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.txt b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.txt
> new file mode 100644
> index 000000000000..125efa9f3de0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.txt
> @@ -0,0 +1,180 @@
> +* ROHM BD71828 Power Management Integrated Circuit bindings
> +
> +BD71828GW is a single-chip power management IC for battery-powered portable
> +devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA single-cell
> +linear charger. Also included is a Coulomb counter, a real-time clock (RTC),
> +and a 32.768 kHz clock gate.
> +
> +Required properties:
> + - compatible : Should be "rohm,bd71828".
> + - reg : I2C slave address.
> + - interrupt-parent : Phandle to the parent interrupt controller.
> + - interrupts : The interrupt line the device is connected to.
> + - clocks : The parent clock connected to PMIC.
> + - #clock-cells : Should be 0.
> + - regulators : List of child nodes that specify the
> + regulators. Please see
> + ../regulator/rohm,bd71828-regulator.txt
> + - gpio-controller : To indicate BD71828 acts as a GPIO controller.
> + - #gpio-cells : Should be 2. The first cell is the pin number
> + and the second cell is used to specify flags.
> + See ../gpio/gpio.txt for more information.
> +
> +The BD71828 RUN state is divided into 4 configurable run-levels named RUN0,
> +RUN1, RUN2 and RUN3. Bucks 1, 2, 6 and 7 can be either controlled individually
> +via I2C, or some/all of them can be bound to run-levels and controlled as a
> +group. If bucks are controlled individually these run-levels are ignored. See
> +../regulator/rohm,bd71828-regulator.txt for how to define regulator voltages
The rohm,bd71828-regulator.txt should be yaml if the maintainers want it
that way.
> +for run-levels. Run-levels can be changed by I2C or GPIO depending on PMIC's OTP
> +configuration.
> +
> +Optional properties:
> +- clock-output-names : Should contain name for output clock.
> +- rohm,dvs-vsel-gpios : GPIOs used to control PMIC run-levels. Should
> + describe two GPIOs. (See run-level control in
> + data-sheet). If this property is omitted but
> + some bucks are marked to be controlled by
> + run-levels - then OTP option allowing
> + run-level control via I2C is assumed.
> +- gpio-reserved-ranges : Usage of GPIO pins can be changed via OTP.
> + This property can be used to mark the pins
> + which should not be configured for GPIO.
> + Please see the ../gpio/gpio.txt for more
> + information.
> +
> +Example:
> +
This example does not look right.
I see that I2C is referenced above so the example could look like this
osc: oscillator {
compatible = "fixed-clock";
#clock-cells = <1>;
clock-frequency = <32768>;
clock-output-names = "osc";
};
This is an external oscillator and is not really part of the pmic
itself. I am not sure you even need to define that since it is not part
of the pmic.
i2c {
pmic@4b {
[...]
};
};
Dan
next prev parent reply other threads:[~2019-10-24 19:37 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 11:40 [RFC PATCH v2 00/13] Support ROHM BD71828 PMIC Matti Vaittinen
2019-10-24 11:41 ` [RFC PATCH v2 01/13] mfd: bd71828: Support ROHM BD71828 PMIC - core Matti Vaittinen
2019-10-24 11:41 ` [RFC PATCH v2 02/13] dt-bindings: mfd: Document ROHM BD71828 bindings Matti Vaittinen
2019-10-24 19:35 ` Dan Murphy [this message]
2019-10-25 5:49 ` Vaittinen, Matti
2019-10-29 12:08 ` Lee Jones
2019-10-29 19:34 ` Rob Herring
2019-10-30 8:26 ` Vaittinen, Matti
2019-10-30 19:22 ` Rob Herring
2019-10-31 12:54 ` Vaittinen, Matti
2019-10-31 17:50 ` Rob Herring
2019-11-01 12:52 ` Vaittinen, Matti
2019-11-04 19:28 ` Rob Herring
2019-10-24 11:42 ` [RFC PATCH v2 03/13] dt-bindings: regulator: Document ROHM BD71282 regulator bindings Matti Vaittinen
2019-10-24 11:44 ` [RFC PATCH v2 04/13] mfd: input: bd71828: Add power-key support Matti Vaittinen
2019-10-24 11:44 ` [RFC PATCH v2 05/13] clk: bd718x7: Support ROHM BD71828 clk block Matti Vaittinen
2019-10-28 23:32 ` Stephen Boyd
2019-10-29 6:28 ` Vaittinen, Matti
[not found] ` <20191105005541.7913220717@mail.kernel.org>
2019-11-05 8:11 ` Vaittinen, Matti
2019-10-24 11:45 ` [RFC PATCH v2 06/13] regulator: bd718x7: Split driver to common and bd718x7 specific parts Matti Vaittinen
2019-10-24 11:46 ` [RFC PATCH v2 07/13] regulator: bd71828: Basic support for ROHM bd71828 PMIC regulators Matti Vaittinen
2019-10-24 11:46 ` [RFC PATCH v2 08/13] regulator: bd71828: Add GPIO based run-level control for regulators Matti Vaittinen
2019-10-24 11:47 ` [RFC PATCH v2 09/13] regulator: bd71828: enhanced run-level support Matti Vaittinen
2019-10-24 11:47 ` [RFC PATCH v2 10/13] regulator: bd71828: Support in-kernel APIs to change run-level Matti Vaittinen
2019-10-24 11:50 ` [RFC PATCH v2 11/13] rtc: bd70528 add BD71828 support Matti Vaittinen
2019-10-24 11:50 ` [RFC PATCH v2 12/13] gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs Matti Vaittinen
2019-10-24 11:59 ` Linus Walleij
2019-10-24 13:34 ` Vaittinen, Matti
2019-10-24 11:52 ` [RFC PATCH v2 13/13] led: bd71828: Support LED outputs on ROHM BD71828 PMIC Matti Vaittinen
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