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Message-ID: <20210111190653.GA2890911@robh.at.kernel.org>
Date: Mon, 11 Jan 2021 13:06:53 -0600
From: Rob Herring <robh@...nel.org>
To: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc: mazziesaccount@...il.com, Lee Jones <lee.jones@...aro.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
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>,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-power@...rohmeurope.com, linux-clk@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-rtc@...r.kernel.org
Subject: Re: [PATCH 05/15] dt_bindings: mfd: Add ROHM BD71815 PMIC
On Fri, Jan 08, 2021 at 03:34:52PM +0200, Matti Vaittinen wrote:
> Document DT bindings for ROHM BD71815.
>
> BD71815 is a single-chip power management IC mainly for battery-powered
> portable devices. The IC integrates 5 bucks, 7 LDOs, a boost driver for
> LED, a battery charger with a Coulomb counter, a real-time clock, a 32kHz
> clock and two general-purpose outputs although only one is documented by
> the data-sheet.
>
> Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> ---
> .../bindings/mfd/rohm,bd71815-pmic.yaml | 198 ++++++++++++++++++
> 1 file changed, 198 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml
>
> diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml b/Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml
> new file mode 100644
> index 000000000000..2206b2008acd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/rohm,bd71815-pmic.yaml
> @@ -0,0 +1,198 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/rohm,bd71815-pmic.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ROHM BD71815 Power Management Integrated Circuit bindings
> +
> +maintainers:
> + - Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> +
> +description: |
> + BD71815AGW is a single-chip power management ICs for battery-powered
> + portable devices. It integrates 5 buck converters, 8 LDOs, a boost driver
> + for LED and a 500 mA single-cell linear charger. Also included is a Coulomb
> + counter, a real-time clock (RTC), and a 32.768 kHz clock gate and two GPOs.
> +
> +properties:
> + compatible:
> + const: rohm,bd71815
> +
> + reg:
> + description:
> + I2C slave address.
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + gpio-controller: true
Add a blank line here.
> + "#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
And here.
> + "#clock-cells":
> + const: 0
And here.
> + clock-output-names:
> + const: bd71815-32k-out
> +
> + rohm,clkout-mode:
> + description: clk32kout mode. Can be set to "open-drain" or "cmos".
> + $ref: "/schemas/types.yaml#/definitions/string"
> + enum:
> + - open-drain
> + - cmos
> +
> + 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
'something other'
Though this can be expressed as 'default: 30000000'
> + here in Ohms.
> +
> + regulators:
> + $ref: ../regulator/rohm,bd71815-regulator.yaml
This file needs to come first.
> + description:
> + List of child nodes that specify the regulators.
> +
> + 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.
> +
> + rohm,enable-hidden-gpo:
> + description: |
> + The BD71815 has undocumented GPO at pin E5. Pin is marked as GND at the
> + data-sheet as it's location in the middle of GND pins makes it hard to
> + use on PCB. If your board has managed to use this pin you can enable the
> + second GPO by defining this property. Dont enable this if you are unsure
> + about how the E5 pin is connected on your board.
> + type: boolean
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - "#clock-cells"
> + - regulators
> + - gpio-controller
> + - "#gpio-cells"
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/irq.h>
> + #include <dt-bindings/leds/common.h>
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + pmic: pmic@4b {
> + compatible = "rohm,bd71815";
> + reg = <0x4b>;
> +
> + interrupt-parent = <&gpio1>;
> + interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
> +
> + clocks = <&osc 0>;
> + #clock-cells = <0>;
> + clock-output-names = "bd71815-32k-out";
> +
> + gpio-controller;
> + #gpio-cells = <2>;
> +
> + rohm,charger-sense-resistor-ohms = <10000000>;
> +
> + regulators {
> + buck1: buck1 {
> + regulator-name = "buck1";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <2000000>;
> + regulator-always-on;
> + regulator-ramp-delay = <1250>;
> + rohm,dvs-run-voltage = <1150000>;
> + rohm,dvs-suspend-voltage = <950000>;
> + };
> + buck2: buck2 {
> + regulator-name = "buck2";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <2000000>;
> + regulator-always-on;
> + regulator-ramp-delay = <1250>;
> + rohm,dvs-run-voltage = <1150000>;
> + rohm,dvs-suspend-voltage = <950000>;
> + };
> + buck3: buck3 {
> + regulator-name = "buck3";
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <2700000>;
> + regulator-always-on;
> + };
> + buck4: buck4 {
> + regulator-name = "buck4";
> + regulator-min-microvolt = <1100000>;
> + regulator-max-microvolt = <1850000>;
> + regulator-always-on;
> + };
> + buck5: buck5 {
> + regulator-name = "buck5";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> + ldo1: ldo1 {
> + regulator-name = "ldo1";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> + ldo2: ldo2 {
> + regulator-name = "ldo2";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> + ldo3: ldo3 {
> + regulator-name = "ldo3";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> + ldo4: ldo4 {
> + regulator-name = "ldo4";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> + ldo5: ldo5 {
> + regulator-name = "ldo5";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-always-on;
> + };
> + ldo6: ldodvref {
> + regulator-name = "ldodvref";
> + regulator-always-on;
> + };
> + ldo7: ldolpsr {
> + regulator-name = "ldolpsr";
> + regulator-always-on;
> + };
> +
> + boost: wled {
> + regulator-name = "wled";
> + regulator-min-microamp = <10>;
> + regulator-max-microamp = <25000>;
> + };
> + };
> + };
> + };
> --
> 2.25.4
>
>
> --
> Matti Vaittinen, Linux device drivers
> ROHM Semiconductors, Finland SWDC
> Kiviharjunlenkki 1E
> 90220 OULU
> FINLAND
>
> ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
> Simon says - in Latin please.
> ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
> Thanks to Simon Glass for the translation =]
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