linux-kernel - Re: [PATCH v4 02/22] ASoC: dt-bindings: tegra20-i2s: Convert to schema

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Date:   Thu, 16 Dec 2021 14:59:48 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Jonathan Hunter <jonathanh@...dia.com>,
        Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Agneli <poczt@...tonmail.ch>, linux-tegra@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v4 02/22] ASoC: dt-bindings: tegra20-i2s: Convert to
 schema

On Sat, Dec 04, 2021 at 05:37:05PM +0300, Dmitry Osipenko wrote:
> Convert NVIDIA Tegra20 I2S binding to schema.
> 
> Reviewed-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  .../bindings/sound/nvidia,tegra20-i2s.txt     | 30 --------
>  .../bindings/sound/nvidia,tegra20-i2s.yaml    | 70 +++++++++++++++++++
>  2 files changed, 70 insertions(+), 30 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
>  create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
> deleted file mode 100644
> index dc30c6bfbe95..000000000000
> --- a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.txt
> +++ /dev/null
> @@ -1,30 +0,0 @@
> -NVIDIA Tegra 20 I2S controller
> -
> -Required properties:
> -- compatible : "nvidia,tegra20-i2s"
> -- reg : Should contain I2S registers location and length
> -- interrupts : Should contain I2S interrupt
> -- resets : Must contain an entry for each entry in reset-names.
> -  See ../reset/reset.txt for details.
> -- reset-names : Must include the following entries:
> -  - i2s
> -- dmas : Must contain an entry for each entry in clock-names.
> -  See ../dma/dma.txt for details.
> -- dma-names : Must include the following entries:
> -  - rx
> -  - tx
> -- clocks : Must contain one entry, for the module clock.
> -  See ../clocks/clock-bindings.txt for details.
> -
> -Example:
> -
> -i2s@...02800 {
> -	compatible = "nvidia,tegra20-i2s";
> -	reg = <0x70002800 0x200>;
> -	interrupts = < 45 >;
> -	clocks = <&tegra_car 11>;
> -	resets = <&tegra_car 11>;
> -	reset-names = "i2s";
> -	dmas = <&apbdma 21>, <&apbdma 21>;
> -	dma-names = "rx", "tx";
> -};
> diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
> new file mode 100644
> index 000000000000..ad43b237d9af
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/nvidia,tegra20-i2s.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVIDIA Tegra20 I2S Controller
> +
> +description: |
> +  The I2S Controller streams synchronous serial audio data between system
> +  memory and an external audio device. The controller supports the I2S Left
> +  Justified Mode, Right Justified Mode, and DSP mode formats.
> +
> +maintainers:
> +  - Thierry Reding <treding@...dia.com>
> +  - Jon Hunter <jonathanh@...dia.com>
> +
> +properties:
> +  compatible:
> +    const: nvidia,tegra20-i2s
> +
> +  reg:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  reset-names:
> +    const: i2s
> +
> +  interrupts:
> +    maxItems: 1

I prefer ordering these by the same order that we typically have in
device tree, so "compatible", "reg", "interrupts", "clocks",
"clock-names", "resets", "reset-names", "dmas", "dma-names". I find
that clearer because it lists the common properties at the top and
the less common ones (such as "dmas") at the bottom.

Anyway, it doesn't really matter, so:

Acked-by: Thierry Reding <treding@...dia.com>

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