linux-kernel - Re: [PATCH] ARM: dts: keystone-k2g-evm: add HDMI and analog audio data

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Message-ID: <a089db87-ab19-052b-c8d6-77d652ad5581@ti.com>
Date:   Wed, 18 Nov 2020 09:39:30 +0200
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     <ssantosh@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <nsekhar@...com>, <tomi.valkeinen@...com>, <jsarha@...com>
Subject: Re: [PATCH] ARM: dts: keystone-k2g-evm: add HDMI and analog audio
 data

Hi,

On 17/11/2020 12.17, Peter Ujfalusi wrote:
> The board is using McASP2 for both analog (tlv320aic3106) and
> HDMI (SiI9022) audio.
> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> ---
>  arch/arm/boot/dts/keystone-k2g-evm.dts | 112 +++++++++++++++++++++++++
>  1 file changed, 112 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/keystone-k2g-evm.dts b/arch/arm/boot/dts/keystone-k2g-evm.dts
> index 8b3d64c913d8..4d7e3514a3a7 100644
> --- a/arch/arm/boot/dts/keystone-k2g-evm.dts
> +++ b/arch/arm/boot/dts/keystone-k2g-evm.dts
> @@ -46,6 +46,14 @@ vcc1v8_ldo1_reg: fixedregulator-vcc1v8-ldo1 {
>  		regulator-always-on;
>  	};
>  
> +	vcc1v8_ldo2_reg: fixedregulator-vcc1v8-ldo2 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "ldo2";
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +		regulator-always-on;
> +	};
> +
>  	hdmi: connector {
>  		compatible = "hdmi-connector";
>  		label = "hdmi";
> @@ -58,6 +66,57 @@ hdmi_connector_in: endpoint {
>  			};
>  		};
>  	};
> +
> +	sound0: sound@0 {
> +		compatible = "simple-audio-card";
> +		simple-audio-card,name = "K2G-EVM";
> +		simple-audio-card,widgets =
> +			"Headphone", "Headphone Jack",
> +			"Line", "Line In";
> +		simple-audio-card,routing =
> +			"Headphone Jack",	"HPLOUT",
> +			"Headphone Jack",	"HPROUT",
> +			"LINE1L",		"Line In",
> +			"LINE1R",		"Line In";
> +
> +		simple-audio-card,dai-link@0 {
> +			format = "i2s";
> +			bitclock-master = <&sound0_0_master>;
> +			frame-master = <&sound0_0_master>;
> +			sound0_0_master: cpu {
> +				sound-dai = <&mcasp2>;
> +				clocks = <&k2g_clks 0x6 1>;
> +				system-clock-direction-out;
> +			};
> +
> +			codec {
> +				sound-dai = <&tlv320aic3106>;
> +				system-clock-frequency = <12288000>;

I think it would be better to use:
				clocks = <&aud_mclk>;


> +			};
> +		};
> +
> +		simple-audio-card,dai-link@1 {
> +			format = "i2s";
> +			bitclock-master = <&sound0_1_master>;
> +			frame-master = <&sound0_1_master>;
> +			sound0_1_master: cpu {
> +				sound-dai = <&mcasp2>;
> +				clocks = <&k2g_clks 0x6 1>;
> +				system-clock-direction-out;
> +			};
> +
> +			codec {
> +				sound-dai = <&sii9022>;
> +				system-clock-frequency = <12288000>;

and here as well:
				clocks = <&aud_mclk>;


> +			};
> +		};
> +	};
> +
> +	sii9022_mclk: sii9022_mclk {

and rename the fixed clock to aud_mclk as the same clock is connected to
both aic3106 and SiI9022

> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <12288000>;
> +	};
>  };
>  
>  &k2g_pinctrl {
> @@ -214,6 +273,15 @@ K2G_CORE_IOPAD(0x10e4) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* dssde.dssd
>  			K2G_CORE_IOPAD(0x10e8) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0) /* dssfid.dssfid */
>  		>;
>  	};
> +
> +	mcasp2_pins: pinmux_mcasp2_pins {
> +		pinctrl-single,pins = <
> +			K2G_CORE_IOPAD(0x1234) (BUFFER_CLASS_B | PIN_PULLDOWN | MUX_MODE4) /* pr0_pru_gpo2.mcasp2_axr2 */
> +			K2G_CORE_IOPAD(0x1238) (BUFFER_CLASS_B | PIN_PULLDOWN | MUX_MODE4) /* pr0_pru_gpo3.mcasp2_axr3 */
> +			K2G_CORE_IOPAD(0x1254) (BUFFER_CLASS_B | PIN_PULLDOWN | MUX_MODE4) /* pr0_pru_gpo10.mcasp2_afsx */
> +			K2G_CORE_IOPAD(0x125c) (BUFFER_CLASS_B | PIN_PULLDOWN | MUX_MODE4) /* pr0_pru_gpo12.mcasp2_aclkx */
> +		>;
> +	};
>  };
>  
>  &uart0 {
> @@ -423,6 +491,10 @@ sii9022: sii9022@3b {
>  		compatible = "sil,sii9022";
>  		reg = <0x3b>;
>  
> +		sil,i2s-data-lanes = < 0 >;
> +		clocks = <&sii9022_mclk>;
> +		clock-names = "mclk";
> +
>  		ports {
>  			#address-cells = <1>;
>  			#size-cells = <0>;
> @@ -444,6 +516,19 @@ sii9022_out: endpoint {
>  			};
>  		};
>  	};
> +
> +	tlv320aic3106: tlv320aic3106@1b {
> +		#sound-dai-cells = <0>;
> +		compatible = "ti,tlv320aic3106";
> +		reg = <0x1b>;
> +		status = "okay";
> +
> +		/* Regulators */
> +		AVDD-supply = <&vcc3v3_dcin_reg>;
> +		IOVDD-supply = <&vcc3v3_dcin_reg>;
> +		DRVDD-supply = <&vcc3v3_dcin_reg>;
> +		DVDD-supply = <&vcc1v8_ldo2_reg>;
> +	};
>  };
>  
>  &dss {
> @@ -458,3 +543,30 @@ dpi_out: endpoint {
>  		};
>  	};
>  };
> +
> +&k2g_clks {
> +	/* on the board 22.5792MHz is connected to AUDOSC_IN */
> +	assigned-clocks = <&k2g_clks 0x4c 2>;
> +	assigned-clock-rates = <22579200>;
> +};
> +
> +&mcasp2 {
> +	#sound-dai-cells = <0>;
> +
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&mcasp2_pins>;
> +
> +	assigned-clocks = <&k2g_clks 0x6 1>;
> +	assigned-clock-parents = <&k2g_clks 0x6 2>;
> +
> +	status = "okay";
> +
> +	op-mode = <0>;		/* MCASP_IIS_MODE */
> +	tdm-slots = <2>;
> +	/* 6 serializer */
> +	serial-dir = <	/* 0: INACTIVE, 1: TX, 2: RX */
> +		0 0 1 2 0 0 // AXR2: TX, AXR3: rx
> +	>;
> +	tx-num-evt = <32>;
> +	rx-num-evt = <32>;
> +};
> 

- Péter

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