linux-kernel - Re: [PATCH v1 17/20] ARM: tegra: Add S/PDIF node to Tegra20 device-tree

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Date:   Thu, 25 Nov 2021 14:43:28 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        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>, Rob Herring <robh+dt@...nel.org>
Cc:     linux-tegra@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v1 17/20] ARM: tegra: Add S/PDIF node to Tegra20
 device-tree

25.11.2021 01:00, Dmitry Osipenko пишет:
> Add S/PDIF node to Tegra20 device-tree. It's needed for enabling HDMI
> audio support.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  arch/arm/boot/dts/tegra20.dtsi | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
> index 63c2c2f8c0ce..799da7dc929b 100644
> --- a/arch/arm/boot/dts/tegra20.dtsi
> +++ b/arch/arm/boot/dts/tegra20.dtsi
> @@ -197,6 +197,7 @@ hdmi@...80000 {
>  			reset-names = "hdmi";
>  			power-domains = <&pd_core>;
>  			operating-points-v2 = <&hdmi_dvfs_opp_table>;
> +			#sound-dai-cells = <0>;
>  			status = "disabled";
>  		};
>  
> @@ -396,6 +397,23 @@ tegra_ac97: ac97@...02000 {
>  		status = "disabled";
>  	};
>  
> +	tegra_spdif: spdif@...02400 {
> +		compatible = "nvidia,tegra20-spdif";
> +		reg = <0x70002400 0x200>;
> +		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&tegra_car TEGRA20_CLK_SPDIF_OUT>,
> +			 <&tegra_car TEGRA20_CLK_SPDIF_IN>;
> +		clock-names = "spdif_out", "spdif_in";
> +		resets = <&tegra_car 10>;
> +		dmas = <&apbdma 3>, <&apbdma 3>;
> +		dma-names = "rx", "tx";
> +		#sound-dai-cells = <0>;
> +		status = "disabled";
> +
> +		assigned-clocks = <&tegra_car TEGRA20_CLK_SPDIF_OUT>;
> +		assigned-clock-parents = <&tegra_car TEGRA20_CLK_PLL_A_OUT0>;
> +	};
> +
>  	tegra_i2s1: i2s@...02800 {
>  		compatible = "nvidia,tegra20-i2s";
>  		reg = <0x70002800 0x200>;
> 

@Thierry, this patch is made on top of [1].

[1] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=271954