linux-kernel - Re: [PATCH v1 5/5] riscv: dts: starfive: Add JH7110 PWM-DAC support

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Date:   Mon, 26 Jun 2023 20:11:34 +0800
From:   Walker Chen <walker.chen@...rfivetech.com>
To:     Hal Feng <hal.feng@...rfivetech.com>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Rob Herring <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor@...nel.org>,
        Xingyu Wu <xingyu.wu@...rfivetech.com>,
        "Emil Renner Berthing" <emil.renner.berthing@...onical.com>,
        Claudiu Beznea <Claudiu.Beznea@...rochip.com>
CC:     <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 5/5] riscv: dts: starfive: Add JH7110 PWM-DAC support


On 2023/6/26 19:09, Hal Feng wrote:
> Add PWM-DAC support for StarFive JH7110 SoC.
> 
> Signed-off-by: Hal Feng <hal.feng@...rfivetech.com>

Reviewed-by: Walker Chen <walker.chen@...rfivetech.com>

> ---
>  .../jh7110-starfive-visionfive-2.dtsi         | 50 +++++++++++++++++++
>  arch/riscv/boot/dts/starfive/jh7110.dtsi      | 13 +++++
>  2 files changed, 63 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> index 19b5954ee72d..5ca66a65e722 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> @@ -36,6 +36,34 @@ gpio-restart {
>  		gpios = <&sysgpio 35 GPIO_ACTIVE_HIGH>;
>  		priority = <224>;
>  	};
> +
> +	pwmdac_dit: pwmdac-dit {
> +		compatible = "starfive,jh7110-pwmdac-dit";
> +		#sound-dai-cells = <0>;
> +	};
> +
> +	sound {
> +		compatible = "simple-audio-card";
> +		simple-audio-card,name = "StarFive-PWMDAC-Sound-Card";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		simple-audio-card,dai-link@0 {
> +			reg = <0>;
> +			format = "left_j";
> +			bitclock-master = <&sndcpu0>;
> +			frame-master = <&sndcpu0>;
> +			status = "okay";
> +
> +			sndcpu0: cpu {
> +				sound-dai = <&pwmdac>;
> +			};
> +
> +			codec {
> +				sound-dai = <&pwmdac_dit>;
> +			};
> +		};
> +	};
>  };
>  
>  &dvp_clk {
> @@ -191,6 +219,22 @@ GPOEN_SYS_I2C6_DATA,
>  		};
>  	};
>  
> +	pwmdac_pins: pwmdac-0 {
> +		pwmdac-pins {
> +			pinmux = <GPIOMUX(33, GPOUT_SYS_PWMDAC_LEFT,
> +					      GPOEN_ENABLE,
> +					      GPI_NONE)>,
> +				 <GPIOMUX(34, GPOUT_SYS_PWMDAC_RIGHT,
> +					      GPOEN_ENABLE,
> +					      GPI_NONE)>;
> +			bias-disable;
> +			drive-strength = <2>;
> +			input-disable;
> +			input-schmitt-disable;
> +			slew-rate = <0>;
> +		};
> +	};
> +
>  	uart0_pins: uart0-0 {
>  		tx-pins {
>  			pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX,
> @@ -250,6 +294,12 @@ GPOEN_DISABLE,
>  	};
>  };
>  
> +&pwmdac {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pwmdac_pins>;
> +	status = "okay";
> +};
> +
>  &uart0 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&uart0_pins>;
> diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> index cfda6fb0d91b..bbb3f65e6f80 100644
> --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
> +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
> @@ -387,6 +387,19 @@ tdm: tdm@...90000 {
>  			status = "disabled";
>  		};
>  
> +		pwmdac: pwmdac@...b0000 {
> +			compatible = "starfive,jh7110-pwmdac";
> +			reg = <0x0 0x100b0000 0x0 0x1000>;
> +			clocks = <&syscrg JH7110_SYSCLK_PWMDAC_APB>,
> +				 <&syscrg JH7110_SYSCLK_PWMDAC_CORE>;
> +			clock-names = "apb", "core";
> +			resets = <&syscrg JH7110_SYSRST_PWMDAC_APB>;
> +			dmas = <&dma 22>;
> +			dma-names = "tx";
> +			#sound-dai-cells = <0>;
> +			status = "disabled";
> +		};
> +
>  		stgcrg: clock-controller@...30000 {
>  			compatible = "starfive,jh7110-stgcrg";
>  			reg = <0x0 0x10230000 0x0 0x10000>;