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Date: Wed, 3 Apr 2019 08:34:26 +0100
From: Lee Jones <lee.jones@...aro.org>
To: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc: mazziesaccount@...il.com, Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <bgolaszewski@...libre.com>,
Sebastian Reichel <sre@...nel.org>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Alessandro Zummo <a.zummo@...ertech.it>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Wim Van Sebroeck <wim@...ux-watchdog.org>,
Guenter Roeck <linux@...ck-us.net>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-pm@...r.kernel.org,
linux-rtc@...r.kernel.org, linux-watchdog@...r.kernel.org,
heikki.haikola@...rohmeurope.com, mikko.mutanen@...rohmeurope.com
Subject: Re: [PATCH v11 4/8] dt-bindings: mfd: Document first ROHM BD70528
bindings
On Mon, 25 Mar 2019, Matti Vaittinen wrote:
> Document bindings for regulators (3 bucks, 3 LDOs and 2 LED
> drivers) and 4 GPIO pins which can be configured for I/O or
> as interrupt sources withe configurable trigger levels.
>
> Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> Acked-by: Linus Walleij <linus.walleij@...aro.org>
> ---
> .../bindings/mfd/rohm,bd70528-pmic.txt | 102 ++++++++++++++++++
> 1 file changed, 102 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt
>
> diff --git a/Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt b/Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt
> new file mode 100644
> index 000000000000..120462c17904
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt
> @@ -0,0 +1,102 @@
> +* ROHM BD70528 Power Management Integrated Circuit bindings
> +
> +BD70528MWV is an ultra-low quiescet current general purpose single-chip
What does 'quiescet' mean?
"general purpose, single-chip,"
> +power management IC for battery-powered portable devices. The IC
> +integrates 3 ultra-low current consumption buck converters, 3 LDOs and 2
> +LED Drivers. Also included are 4 GPIOs, a real-time clock (RTC), a 32kHz
> +clock gate, high-accuracy VREF for use with an external ADC, flexible
> +dual-input power path, 10 bit SAR ADC for battery temperature monitor and
> +1S battery charger with scalable charge currents.
> +
> +Required properties:
> + - compatible : Should be "rohm,bd70528"
> + - reg : I2C slave address.
> + - interrupts : The interrupt line the device is connected to.
> + - interrupt-controller : To indicate BD70528 acts as an interrupt controller.
> + - #interrupt-cells : Should be 2. Usage is compliant to the 2 cells
> + variant of ../interrupt-controller/interrupts.txt
> + - gpio-controller : To indicate BD70528 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.
> + - #clock-cells : Should be 0.
> + - regulators: : List of child nodes that specify the regulators.
> + Please see ../regulator/rohm,bd70528-regulator.txt
> +
> +Optional properties:
> + - clock-output-names : Should contain name for output clock.
> +
> +Example:
> +/* external oscillator */
"External"
> +osc: oscillator {
> + compatible = "fixed-clock";
> + #clock-cells = <1>;
> + clock-frequency = <32768>;
> + clock-output-names = "osc";
> +};
> +
> +pmic: pmic@4b {
> + compatible = "rohm,bd70528";
> + reg = <0x4b>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <29 GPIO_ACTIVE_LOW>;
> + clocks = <&osc 0>;
> + #clock-cells = <0>;
> + clock-output-names = "bd70528-32k-out";
> + #gpio-cells = <2>;
> + gpio-controller;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> +
> + regulators {
> + buck1: BUCK1 {
> + regulator-name = "buck1";
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <3400000>;
> + regulator-boot-on;
> + regulator-ramp-delay = <125>;
> + };
> + buck2: BUCK2 {
> + regulator-name = "buck2";
> + regulator-min-microvolt = <1200000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + regulator-ramp-delay = <125>;
> + };
> + buck3: BUCK3 {
> + regulator-name = "buck3";
> + regulator-min-microvolt = <800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-boot-on;
> + regulator-ramp-delay = <250>;
> + };
> + ldo1: LDO1 {
> + regulator-name = "ldo1";
> + regulator-min-microvolt = <1650000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + };
> + ldo2: LDO2 {
> + regulator-name = "ldo2";
> + regulator-min-microvolt = <1650000>;
> + regulator-max-microvolt = <3300000>;
> + regulator-boot-on;
> + };
> +
> + ldo3: LDO3 {
> + regulator-name = "ldo3";
> + regulator-min-microvolt = <1650000>;
> + regulator-max-microvolt = <3300000>;
> + };
> + led_ldo1: LED_LDO1 {
> + regulator-name = "led_ldo1";
> + regulator-min-microvolt = <200000>;
> + regulator-max-microvolt = <300000>;
> + };
> + led_ldo2: LED_LDO2 {
> + regulator-name = "led_ldo2";
> + regulator-min-microvolt = <200000>;
> + regulator-max-microvolt = <300000>;
> + };
> + };
> +};
--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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