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SubjectRe: [PATCH v1 1/3] dt-bindings: iio: adc: convert rockchip saradc bindings to yaml
On Fri, 13 Mar 2020 14:29:24 +0100
Johan Jonker <jbx6244@gmail.com> wrote:

> Current dts files with 'saradc' nodes are manually verified.
> In order to automate this process rockchip-saradc.txt
> has to be converted to yaml.
>
> Signed-off-by: Johan Jonker <jbx6244@gmail.com>

Hi Johan,

A question inline which may just be my lack of yaml knowledge
showing itself!

Jonathan

> ---
> .../bindings/iio/adc/rockchip-saradc.txt | 37 ----------
> .../bindings/iio/adc/rockchip-saradc.yaml | 79 ++++++++++++++++++++++
> 2 files changed, 79 insertions(+), 37 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
> create mode 100644 Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
> deleted file mode 100644
> index c2c50b598..000000000
> --- a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt
> +++ /dev/null
> @@ -1,37 +0,0 @@
> -Rockchip Successive Approximation Register (SAR) A/D Converter bindings
> -
> -Required properties:
> -- compatible: should be "rockchip,<name>-saradc" or "rockchip,rk3066-tsadc"
> - - "rockchip,saradc": for rk3188, rk3288
> - - "rockchip,rk3066-tsadc": for rk3036
> - - "rockchip,rk3328-saradc", "rockchip,rk3399-saradc": for rk3328
> - - "rockchip,rk3399-saradc": for rk3399
> - - "rockchip,rv1108-saradc", "rockchip,rk3399-saradc": for rv1108
> -
> -- reg: physical base address of the controller and length of memory mapped
> - region.
> -- interrupts: The interrupt number to the cpu. The interrupt specifier format
> - depends on the interrupt controller.
> -- clocks: Must contain an entry for each entry in clock-names.
> -- clock-names: Shall be "saradc" for the converter-clock, and "apb_pclk" for
> - the peripheral clock.
> -- vref-supply: The regulator supply ADC reference voltage.
> -- #io-channel-cells: Should be 1, see ../iio-bindings.txt
> -
> -Optional properties:
> -- resets: Must contain an entry for each entry in reset-names if need support
> - this option. See ../reset/reset.txt for details.
> -- reset-names: Must include the name "saradc-apb".
> -
> -Example:
> - saradc: saradc@2006c000 {
> - compatible = "rockchip,saradc";
> - reg = <0x2006c000 0x100>;
> - interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
> - clock-names = "saradc", "apb_pclk";
> - resets = <&cru SRST_SARADC>;
> - reset-names = "saradc-apb";
> - #io-channel-cells = <1>;
> - vref-supply = <&vcc18>;
> - };
> diff --git a/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
> new file mode 100644
> index 000000000..2908788b3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/rockchip-saradc.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/rockchip-saradc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Rockchip Successive Approximation Register (SAR) A/D Converter
> +
> +maintainers:
> + - Heiko Stuebner <heiko@sntech.de>
> +
> +properties:
> + compatible:
> + oneOf:
> + - const: rockchip,saradc
> + - const: rockchip,rk3066-tsadc
> + - const: rockchip,rk3399-saradc
> + - items:
> + - enum:
> + - rockchip,rk3328-saradc
> + - rockchip,rv1108-saradc
> + - const: rockchip,rk3399-saradc

My yaml knowledge isn't great. Why do we have this nested
structure rather than a straight forward list?

> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: converter clock
> + - description: peripheral clock
> +
> + clock-names:
> + items:
> + - const: saradc
> + - const: apb_pclk
> +
> + resets:
> + maxItems: 1
> +
> + reset-names:
> + const: saradc-apb
> +
> + vref-supply:
> + description:
> + The regulator supply for the ADC reference voltage.
> +
> + "#io-channel-cells":
> + const: 1
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - vref-supply
> + - "#io-channel-cells"
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/rk3288-cru.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + saradc: saradc@2006c000 {
> + compatible = "rockchip,saradc";
> + reg = <0x2006c000 0x100>;
> + interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
> + clock-names = "saradc", "apb_pclk";
> + resets = <&cru SRST_SARADC>;
> + reset-names = "saradc-apb";
> + vref-supply = <&vcc18>;
> + #io-channel-cells = <1>;
> + };

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