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Date: Sun, 20 Sep 2015 05:16:30 +0100
From: Lee Jones <lee.jones@...aro.org>
To: "Andrew F. Davis" <afd@...com>
Cc: Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Linus Walleij <linus.walleij@...aro.org>,
Alexandre Courbot <gnurou@...il.com>,
Samuel Ortiz <sameo@...ux.intel.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] Documentation: tps65912: Add DT bindings for the
TPS65912 PMIC
On Tue, 15 Sep 2015, Andrew F. Davis wrote:
> The TPS65912 PMIC contains several regulators and a GPIO controller.
> Add bindings for the TPS65912 PMIC.
>
> Signed-off-by: Andrew F. Davis <afd@...com>
> ---
> .../devicetree/bindings/gpio/gpio-tps65912.txt | 17 +++++++++
> Documentation/devicetree/bindings/mfd/tps65912.txt | 43 ++++++++++++++++++++++
> .../bindings/regulator/tps65912-regulator.txt | 32 ++++++++++++++++
> 3 files changed, 92 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/gpio-tps65912.txt
> create mode 100644 Documentation/devicetree/bindings/mfd/tps65912.txt
> create mode 100644 Documentation/devicetree/bindings/regulator/tps65912-regulator.txt
>
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-tps65912.txt b/Documentation/devicetree/bindings/gpio/gpio-tps65912.txt
> new file mode 100644
> index 0000000..f65370b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/gpio-tps65912.txt
> @@ -0,0 +1,17 @@
> +* TPS65912 GPIO controller bindings
Suggest s/controller/Controller/
> +Required properties:
> + - compatible : Should be "ti,tps65912-gpio".
> + - gpio-controller : Marks the device node as a gpio controller.
s/gpio/GPIO/
As above for controller.
> + - #gpio-cells : Should be two. The first cell is the pin number and
> + the second cell is used to specify the gpio polarity:
> + 0 = active high
> + 1 = active low
Best to use the #defines in include/dt-bindings/gpio.
> +Example:
> +
> + gpio4: tps65912_gpio {
> + compatible = "ti,tps65912-gpio";
> + gpio-controller;
> + #gpio-cells = <2>;
> + };
> diff --git a/Documentation/devicetree/bindings/mfd/tps65912.txt b/Documentation/devicetree/bindings/mfd/tps65912.txt
> new file mode 100644
> index 0000000..081af66
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/tps65912.txt
> @@ -0,0 +1,43 @@
> +* TPS65912 Power Management Integrated Circuit bindings
> +
> +Required properties:
> + - compatible : Should be "ti,tps65912".
> + - reg : Slave address or chip select number (I2C / SPI).
> + - interrupt-parent : The parent interrupt controller.
> + - interrupts : The interrupt line the device is connected to.
> + - interrupt-controller : Marks the device node as an interrupt controller.
> + - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
s/the/The/
> + The first cell is the IRQ number.
> + The second cell is the flags, encoded as the trigger masks from
> + Documentation/devicetree/bindings/interrupts.txt
No such file.
> +Optional nodes:
> + - Regulators: Documentation/devicetree/bindings/regulator/tps65912-regulator.txt
> + - GPIO: Documentation/devicetree/bindings/gpio/gpio-tps65912.txt.
Better to use ../gpio, ../regulator, etc.
"Regulators" and "GPIO" aren't valid node names.
Please be more specific.
> +Example:
> +
> + pmic: tps65912@2d {
> + compatible = "ti,tps65912";
> + reg = <0x2d>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> +
> + dcdc1: regulator-dcdc1 {
> + compatible = "ti,tps65912-dcdc1";
> + regulator-name = "vdd_core";
> + regulator-min-microvolt = <912000>;
> + regulator-max-microvolt = <1144000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> + ...
No need for this.
> + gpio4: tps65912_gpio {
> + compatible = "ti,tps65912-gpio";
> + gpio-controller;
> + #gpio-cells = <2>;
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/regulator/tps65912-regulator.txt b/Documentation/devicetree/bindings/regulator/tps65912-regulator.txt
> new file mode 100644
> index 0000000..a417ff7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/tps65912-regulator.txt
> @@ -0,0 +1,32 @@
> +* TPS65912 regulator bindings
> +
> +Required properties:
> + - compatible: Should be:
> + - "ti,tps65912-dcdc1" for DCDC1
> + - "ti,tps65912-dcdc2" for DCDC2
> + - "ti,tps65912-dcdc3" for DCDC3
> + - "ti,tps65912-dcdc4" for DCDC4
> + - "ti,tps65912-ldo1" for LDO1
> + - "ti,tps65912-ldo2" for LDO2
> + - "ti,tps65912-ldo3" for LDO3
> + - "ti,tps65912-ldo4" for LDO4
> + - "ti,tps65912-ldo5" for LDO5
> + - "ti,tps65912-ldo6" for LDO6
> + - "ti,tps65912-ldo7" for LDO7
> + - "ti,tps65912-ldo8" for LDO8
> + - "ti,tps65912-ldo9" for LDO9
> + - "ti,tps65912-ldo10" for LDO10
> +
> +Optional properties:
> + - Any optional property defined in bindings/regulator/regulator.txt
../regulator/...
> +Example:
> +
> + xyz: regulator@0 {
> + compatible = "ti,tps65912-dcdc1";
> + regulator-name = "vdd_core";
> + regulator-min-microvolt = <912000>;
> + regulator-max-microvolt = <1144000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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