linux-kernel - Re: [PATCH v2] ASoC: dt-bindings: tegra20-ac97: convert to dt schema

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Message-ID: <9936177c-1800-4425-be36-bc9f06fcf5ba@kernel.org>
Date: Tue, 23 Apr 2024 08:49:07 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Mohammad Shehar Yaar Tausif <sheharyaar48@...il.com>,
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>, Thierry Reding
 <thierry.reding@...il.com>, Jonathan Hunter <jonathanh@...dia.com>
Cc: Thierry Reding <treding@...dia.com>, linux-sound@...r.kernel.org,
 devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ASoC: dt-bindings: tegra20-ac97: convert to dt schema

On 22/04/2024 14:38, Mohammad Shehar Yaar Tausif wrote:
> Convert NVIDIA Tegra20 AC97 binding to DT schema.
> Change -gpio to -gpios in both schema and nvidia/tegra20-colibri.dtsi

Why? Please always explain why you are doing things. "gpio" suffix is
deprecated.

> 
> Signed-off-by: Mohammad Shehar Yaar Tausif <sheharyaar48@...il.com>
> ---
> Changes v1->v2:
> - change -gpio to -gpios in both schema and dtsi
> - tested against dts
> - add header files and defines
> ---
>  .../bindings/sound/nvidia,tegra20-ac97.txt    | 36 --------
>  .../bindings/sound/nvidia,tegra20-ac97.yaml   | 86 +++++++++++++++++++
>  arch/arm/boot/dts/nvidia/tegra20-colibri.dtsi |  4 +-

Bindings are separate patches.

>  3 files changed, 88 insertions(+), 38 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
>  create mode 100644 Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
> deleted file mode 100644
> index eaf00102d92c..000000000000
> --- a/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.txt
> +++ /dev/null
> @@ -1,36 +0,0 @@
> -NVIDIA Tegra 20 AC97 controller
> -
> -Required properties:
> -- compatible : "nvidia,tegra20-ac97"
> -- reg : Should contain AC97 controller registers location and length
> -- interrupts : Should contain AC97 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:
> -  - ac97
> -- 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.
> -- nvidia,codec-reset-gpio : The Tegra GPIO controller's phandle and the number
> -  of the GPIO used to reset the external AC97 codec
> -- nvidia,codec-sync-gpio : The Tegra GPIO controller's phandle and the number
> -  of the GPIO corresponding with the AC97 DAP _FS line
> -
> -Example:
> -
> -ac97@...02000 {
> -	compatible = "nvidia,tegra20-ac97";
> -	reg = <0x70002000 0x200>;
> -	interrupts = <0 81 0x04>;
> -	nvidia,codec-reset-gpio = <&gpio 170 0>;
> -	nvidia,codec-sync-gpio = <&gpio 120 0>;
> -	clocks = <&tegra_car 3>;
> -	resets = <&tegra_car 3>;
> -	reset-names = "ac97";
> -	dmas = <&apbdma 12>, <&apbdma 12>;
> -	dma-names = "rx", "tx";
> -};
> diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.yaml
> new file mode 100644
> index 000000000000..9a68578f6fc3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-ac97.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/nvidia,tegra20-ac97.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVIDIA Tegra20 AC97 controller
> +
> +maintainers:
> +  - Thierry Reding <treding@...dia.com>
> +  - Jon Hunter <jonathanh@...dia.com>
> +
> +properties:
> +  compatible:
> +    const: nvidia,tegra20-ac97
> +
> +  reg:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  reset-names:
> +    const: ac97
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  dmas:
> +    maxItems: 2
> +
> +  dma-names:
> +    items:
> +      - const: rx
> +      - const: tx
> +
> +  nvidia,codec-reset-gpios:
> +    description:
> +      The Tegra GPIO controller's phandle and the number
> +      of the GPIO used to reset the external AC97 codec

Drop redundant parts and just "Reset pin of external AC97 codec"

> +    maxItems: 1
> +
> +  nvidia,codec-sync-gpios:
> +    description:
> +      The Tegra GPIO controller's phandle and the number
> +      of the GPIO corresponding with the AC97 DAP _FS line

"AC97 DAP _FS line"



Best regards,
Krzysztof