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Message-ID: <20191122230514.GB15812@bogus>
Date: Fri, 22 Nov 2019 17:05:14 -0600
From: Rob Herring <robh@...nel.org>
To: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc: mazziesaccount@...il.com, Lee Jones <lee.jones@...aro.org>,
Jacek Anaszewski <jacek.anaszewski@...il.com>,
Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
Mark Rutland <mark.rutland@....com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Jonathan Corbet <corbet@....net>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <bgolaszewski@...libre.com>,
Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
Wolfram Sang <wsa+renesas@...g-engineering.com>,
Marek Szyprowski <m.szyprowski@...sung.com>,
Heiner Kallweit <hkallweit1@...il.com>,
Nicholas Mc Guire <hofrat@...dl.org>,
Phil Edworthy <phil.edworthy@...esas.com>,
linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
linux-rtc@...r.kernel.org
Subject: Re: [PATCH v5 03/16] dt-bindings: mfd: Document ROHM BD71828 bindings
On Mon, Nov 18, 2019 at 08:54:56AM +0200, 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@...rohmeurope.com>
> ---
>
> No changes from v4
>
> .../bindings/mfd/rohm,bd71828-pmic.yaml | 249 ++++++++++++++++++
> 1 file changed, 249 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
>
> diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
> new file mode 100644
> index 000000000000..17ea9fa463e8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml
> @@ -0,0 +1,249 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ROHM BD71828 Power Management Integrated Circuit bindings
> +
> +maintainers:
> + - Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> +
> +description: |
> + 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.
> +
> + 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.yaml for how to define regulator voltages
> + for run-levels. Run-levels can be changed by I2C or GPIO depending on PMIC's
> + OTP configuration.
> +
> +properties:
> + compatible:
> + const: rohm,bd71828
> +
> + reg:
> + description:
> + I2C slave address.
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> + description:
> + The interrupt line the device is connected to.
The description here is not too useful, I'd drop it.
> +
> + gpio-controller: true
> + # Indicate BD71828 acts as a GPIO controller.
> +
> + "#gpio-cells":
> + const: 2
> + description: |
> + The first cell is the pin number and the second cell is used to specify
> + flags. See ../gpio/gpio.txt for more information.
> +
> + clocks:
> + maxItems: 1
> + description:
> + The parent clock connected to PMIC.
The description here is not too useful, I'd drop it.
> +
> + "#clock-cells":
> + const: 0
> +
> + rohm,charger-sense-resistor-ohms:
> + minimum: 10000000
> + maximum: 50000000
> + description: |
> + BD71827 and BD71828 have SAR ADC for measuring charging currents.
> + External sense resistor (RSENSE in data sheet) should be used. If some
> + other but 30MOhm resistor is used the resistance value should be given
> + here in Ohms.
> +
> + regulators:
> + $ref: ../regulator/rohm,bd71828-regulator.yaml
> + description:
> + List of child nodes that specify the regulators.
> +
> + leds:
> + $ref: ../leds/rohm,bd71828-leds.yaml
> +
> + rohm,dvs-vsel-gpios:
> + maxItems: 2
> + description: |
> + 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:
> + description: |
> + Usage of BD71828 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.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - "#clock-cells"
> + - regulators
> + - gpio-controller
> + - "#gpio-cells"
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