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Date: Mon, 13 Jan 2020 11:32:48 -0600
From: Rob Herring <robh+dt@...nel.org>
To: Beniamin Bia <beniamin.bia@...log.com>
Cc: Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Michael Hennerich <Michael.Hennerich@...log.com>,
Hartmut Knaack <knaack.h@....de>,
Peter Meerwald <pmeerw@...erw.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"open list:IIO SUBSYSTEM AND DRIVERS" <linux-iio@...r.kernel.org>,
"open list:STAGING SUBSYSTEM" <devel@...verdev.osuosl.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Mark Rutland <mark.rutland@....com>,
devicetree@...r.kernel.org,
"Paul E. McKenney" <paulmck@...ux.ibm.com>,
Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
biabeniamin@...look.com
Subject: Re: [PATCH v2 3/4] dt-bindings: iio: adc: Migrate AD7606
documentation to yaml
On Wed, Aug 7, 2019 at 8:32 AM Beniamin Bia <beniamin.bia@...log.com> wrote:
>
> The documentation for ad7606 was migrated to yaml.
>
> Signed-off-by: Beniamin Bia <beniamin.bia@...log.com>
> ---
> Changes in v2:
> -old txt file was deleted
>
> .../bindings/iio/adc/adi,ad7606.txt | 66 ---------
> .../bindings/iio/adc/adi,ad7606.yaml | 134 ++++++++++++++++++
> MAINTAINERS | 2 +-
> 3 files changed, 135 insertions(+), 67 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
> create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
> deleted file mode 100644
> index d8652460198e..000000000000
> --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.txt
> +++ /dev/null
> @@ -1,66 +0,0 @@
> -Analog Devices AD7606 Simultaneous Sampling ADC
> -
> -Required properties for the AD7606:
> -
> -- compatible: Must be one of
> - * "adi,ad7605-4"
> - * "adi,ad7606-8"
> - * "adi,ad7606-6"
> - * "adi,ad7606-4"
> - * "adi,ad7616"
> -- reg: SPI chip select number for the device
> -- spi-max-frequency: Max SPI frequency to use
> - see: Documentation/devicetree/bindings/spi/spi-bus.txt
> -- spi-cpha: See Documentation/devicetree/bindings/spi/spi-bus.txt
> -- avcc-supply: phandle to the Avcc power supply
> -- interrupts: IRQ line for the ADC
> - see: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
> -- adi,conversion-start-gpios: must be the device tree identifier of the CONVST pin.
> - This logic input is used to initiate conversions on the analog
> - input channels. As the line is active high, it should be marked
> - GPIO_ACTIVE_HIGH.
> -
> -Optional properties:
> -
> -- reset-gpios: must be the device tree identifier of the RESET pin. If specified,
> - it will be asserted during driver probe. As the line is active high,
> - it should be marked GPIO_ACTIVE_HIGH.
> -- standby-gpios: must be the device tree identifier of the STBY pin. This pin is used
> - to place the AD7606 into one of two power-down modes, Standby mode or
> - Shutdown mode. As the line is active low, it should be marked
> - GPIO_ACTIVE_LOW.
> -- adi,first-data-gpios: must be the device tree identifier of the FRSTDATA pin.
> - The FRSTDATA output indicates when the first channel, V1, is
> - being read back on either the parallel, byte or serial interface.
> - As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
> -- adi,range-gpios: must be the device tree identifier of the RANGE pin. The polarity on
> - this pin determines the input range of the analog input channels. If
> - this pin is tied to a logic high, the analog input range is ±10V for
> - all channels. If this pin is tied to a logic low, the analog input range
> - is ±5V for all channels. As the line is active high, it should be marked
> - GPIO_ACTIVE_HIGH.
> -- adi,oversampling-ratio-gpios: must be the device tree identifier of the over-sampling
> - mode pins. As the line is active high, it should be marked
> - GPIO_ACTIVE_HIGH.
> -
> -Example:
> -
> - adc@0 {
> - compatible = "adi,ad7606-8";
> - reg = <0>;
> - spi-max-frequency = <1000000>;
> - spi-cpol;
> -
> - avcc-supply = <&adc_vref>;
> -
> - interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
> - interrupt-parent = <&gpio>;
> -
> - adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
> - reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
> - adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
> - adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH
> - &gpio 23 GPIO_ACTIVE_HIGH
> - &gpio 26 GPIO_ACTIVE_HIGH>;
> - standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
> - };
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> new file mode 100644
> index 000000000000..509dbe9c84d2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
> @@ -0,0 +1,134 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD7606 Simultaneous Sampling ADC
> +
> +maintainers:
> + - Beniamin Bia <beniamin.bia@...log.com>
> + - Stefan Popa <stefan.popa@...log.com>
> +
> +description: |
> + Analog Devices AD7606 Simultaneous Sampling ADC
> + https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
> + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
> +
> +properties:
> + compatible:
> + enum:
> + - adi,ad7605-4
> + - adi,ad7606-8
> + - adi,ad7606-6
> + - adi,ad7606-4
> + - adi,ad7616
> +
> + reg:
> + maxItems: 1
> +
> + spi-cpha: true
> +
> + avcc-supply:
> + description:
> + Phandle to the Avcc power supply
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + adi,conversion-start-gpios:
> + description:
> + Must be the device tree identifier of the CONVST pin.
> + This logic input is used to initiate conversions on the analog
> + input channels. As the line is active high, it should be marked
> + GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + reset-gpios:
> + description:
> + Must be the device tree identifier of the RESET pin. If specified,
> + it will be asserted during driver probe. As the line is active high,
> + it should be marked GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + standby-gpios:
> + description:
> + Must be the device tree identifier of the STBY pin. This pin is used
> + to place the AD7606 into one of two power-down modes, Standby mode or
> + Shutdown mode. As the line is active low, it should be marked
> + GPIO_ACTIVE_LOW.
> + maxItems: 1
> +
> + adi,first-data-gpios:
> + description:
> + Must be the device tree identifier of the FRSTDATA pin.
> + The FRSTDATA output indicates when the first channel, V1, is
> + being read back on either the parallel, byte or serial interface.
> + As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + adi,range-gpios:
> + description:
> + Must be the device tree identifier of the RANGE pin. The polarity on
> + this pin determines the input range of the analog input channels. If
> + this pin is tied to a logic high, the analog input range is ±10V for
> + all channels. If this pin is tied to a logic low, the analog input range
> + is ±5V for all channels. As the line is active high, it should be marked
> + GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + adi,oversampling-ratio-gpios:
> + description:
> + Must be the device tree identifier of the over-sampling
> + mode pins. As the line is active high, it should be marked
> + GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + adi,sw-mode:
> + description:
> + Software mode of operation, so far available only for ad7616.
> + It is enabled when all three oversampling mode pins are connected to
> + high level. The device is configured by the corresponding registers. If the
> + adi,oversampling-ratio-gpios property is defined, then the driver will set the
> + oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired
> + to VDD.
> + maxItems: 1
> + type: boolean
> +
> +required:
> + - compatible
> + - reg
> + - spi-cpha
> + - avcc-supply
> + - interrupts
> + - adi,conversion-start-gpios
> +
> +examples:
> + - |
> + spi0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + adc@0 {
> + compatible = "adi,ad7606-8";
> + reg = <0>;
> + spi-max-frequency = <1000000>;
> + spi-cpol;
> +
> + avcc-supply = <&adc_vref>;
> +
> + interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
> + interrupt-parent = <&gpio>;
> +
> + adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
> + reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
> + adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
> + adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH
> + &gpio 23 GPIO_ACTIVE_HIGH
> + &gpio 26 GPIO_ACTIVE_HIGH>;
The schema defines there is only 1 GPIO, but there are 3 here. Please
fix (note this shows up in -next due to dtc update).
Rob
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