linux-kernel - Re: [PATCH 4/4] ARM: dts: sun8i: V3: add I2S interface to V3 dts

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Date:   Thu, 13 May 2021 21:25:04 +0200
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Tobias Schramm <t.schramm@...jaro.org>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Tobias Schramm <t.schramm@...jaro.org>
Subject: Re: [PATCH 4/4] ARM: dts: sun8i: V3: add I2S interface to V3 dts

Dne četrtek, 13. maj 2021 ob 21:09:49 CEST je Tobias Schramm napisal(a):
> The Allwinner V3 SoC features an I2S interface. The I2C peripheral is

I2C -> I2S

> identical to that in the Allwinner H3 SoC.
> This commit adds it to the Allwinner V3 dts.
> 
> Signed-off-by: Tobias Schramm <t.schramm@...jaro.org>
> ---
>  arch/arm/boot/dts/sun8i-v3.dtsi | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-v3.dtsi b/arch/arm/boot/dts/sun8i-
v3.dtsi
> index c279e13583ba..0061c49523f2 100644
> --- a/arch/arm/boot/dts/sun8i-v3.dtsi
> +++ b/arch/arm/boot/dts/sun8i-v3.dtsi
> @@ -1,10 +1,30 @@
>  // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>  /*
>   * Copyright (C) 2019 Icenowy Zheng <icenowy@...c.io>
> + * Copyright (C) 2021 Tobias Schramm <t.schramm@...jaro.org>

It's uncommon to add additional copyrights just for one node, but ok.

>   */
>  
>  #include "sun8i-v3s.dtsi"
>  
> +/ {
> +	soc {
> +			i2s0: i2s@...2000 {
> +				#sound-dai-cells = <0>;
> +				compatible = "allwinner,sun8i-h3-
i2s";

You have to add v3s compatible as a fallback (and document it in devicetree 
documentation).

Best regards,
Jernej

> +				reg = <0x01c22000 0x400>;
> +				interrupts = <GIC_SPI 13 
IRQ_TYPE_LEVEL_HIGH>;
> +				clocks = <&ccu CLK_BUS_I2S0>, 
<&ccu CLK_I2S0>;
> +				clock-names = "apb", "mod";
> +				dmas = <&dma 3>, <&dma 3>;
> +				dma-names = "rx", "tx";
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&i2s0_pins>;
> +				resets = <&ccu RST_BUS_I2S0>;
> +				status = "disabled";
> +			};
> +	};
> +};
> +
>  &ccu {
>  	compatible = "allwinner,sun8i-v3-ccu";
>  };
> @@ -25,6 +45,11 @@ external_mdio: mdio@2 {
>  &pio {
>  	compatible = "allwinner,sun8i-v3-pinctrl";
>  
> +	i2s0_pins: i2s0-pins {
> +		pins = "PG10", "PG11", "PG12", "PG13";
> +		function = "i2s";
> +	};
> +
>  	uart1_pg_pins: uart1-pg-pins {
>  		pins = "PG6", "PG7";
>  		function = "uart1";
> -- 
> 2.30.1
> 
> 
>