linux-kernel - Re: [PATCH v3 1/2] dt-bindings: iio: adc: ep93xx: Add cirrus,ep9301-adc description

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Message-ID: <20221230180809.051fc6bd@jic23-huawei>
Date:   Fri, 30 Dec 2022 18:08:09 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Alexander Sverdlin <alexander.sverdlin@...il.com>
Cc:     linux-iio@...r.kernel.org,
        Hartley Sweeten <hsweeten@...ionengravers.com>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v3 1/2] dt-bindings: iio: adc: ep93xx: Add
 cirrus,ep9301-adc description

On Fri, 23 Dec 2022 17:26:35 +0100
Alexander Sverdlin <alexander.sverdlin@...il.com> wrote:

> Add device tree bindings for Cirrus Logic EP9301/EP9302 internal SoCs' ADC
> block.
> 
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@...il.com>

Applied to the togreg branch of iio.git and pushed out as testing.

Whilst we are looking at this driver, Alexander, would you mind if we relaxed
the Kconfig dependencies to:

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 46c4fc2fc534..fd1d68dce507 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -441,7 +441,7 @@ config ENVELOPE_DETECTOR
 
 config EP93XX_ADC
        tristate "Cirrus Logic EP93XX ADC driver"
-       depends on ARCH_EP93XX
+       depends on ARCH_EP93XX || COMPILE_TEST
        help
          Driver for the ADC module on the EP93XX series of SoC from Cirrus Logic.
          It's recommended to switch on CONFIG_HIGH_RES_TIMERS option, in this

I end up doing that locally to build test patches like this one and it doesn't
seem to cause any problems.

Jonathan

> ---
> Changelog:
> v2: removed clock-names property, soc node and include as Krzysztof suggested
> 
>  .../bindings/iio/adc/cirrus,ep9301-adc.yaml   | 47 +++++++++++++++++++
>  MAINTAINERS                                   |  2 +
>  2 files changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/cirrus,ep9301-adc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/cirrus,ep9301-adc.yaml b/Documentation/devicetree/bindings/iio/adc/cirrus,ep9301-adc.yaml
> new file mode 100644
> index 000000000000..6d4fb3e1d2a2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/cirrus,ep9301-adc.yaml
> @@ -0,0 +1,47 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/cirrus,ep9301-adc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cirrus Logic EP930x internal ADC
> +
> +description: |
> +  Cirrus Logic EP9301/EP9302 SoCs' internal ADC block.
> +
> +  User's manual:
> +  https://cdn.embeddedts.com/resource-attachments/ts-7000_ep9301-ug.pdf
> +
> +maintainers:
> +  - Alexander Sverdlin <alexander.sverdlin@...il.com>
> +
> +properties:
> +  compatible:
> +    const: cirrus,ep9301-adc
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    adc: adc@...00000 {
> +        compatible = "cirrus,ep9301-adc";
> +        reg = <0x80900000 0x28>;
> +        clocks = <&syscon 24>;
> +        interrupt-parent = <&vic1>;
> +        interrupts = <30>;
> +    };
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 69565ac0c224..4a914d5bc2e6 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2027,8 +2027,10 @@ M:	Hartley Sweeten <hsweeten@...ionengravers.com>
>  M:	Alexander Sverdlin <alexander.sverdlin@...il.com>
>  L:	linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
>  S:	Maintained
> +F:	Documentation/devicetree/bindings/iio/adc/cirrus,ep9301-adc.yaml
>  F:	arch/arm/mach-ep93xx/
>  F:	arch/arm/mach-ep93xx/include/mach/
> +F:	drivers/iio/adc/ep93xx_adc.c
>  
>  ARM/CLKDEV SUPPORT
>  M:	Russell King <linux@...linux.org.uk>