linux-kernel - Re: [PATCH v5 6/6] arm64: dts: ti: k3-am62a7-sk: Enable audio on AM62A

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Message-ID: <20230315062908.gms3h3llook4z2tg@uda0497096>
Date:   Wed, 15 Mar 2023 11:59:08 +0530
From:   Jai Luthra <j-luthra@...com>
To:     Jayesh Choudhary <j-choudhary@...com>
CC:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Mark Brown <broonie@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 6/6] arm64: dts: ti: k3-am62a7-sk: Enable audio on
 AM62A

Hi Jayesh,

Thanks for the comments on the series.

On Mar 15, 2023 at 10:02:24 +0530, Jayesh Choudhary wrote:
> 
> 
> On 13/03/23 20:19, Jai Luthra wrote:
> > Add nodes for audio codec and sound card, enable the audio serializer
> > (McASP1) under use and update pinmux.
> > 
> > Signed-off-by: Jai Luthra <j-luthra@...com>
> > ---
> >   arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 77 +++++++++++++++++++++++++++++++++
> >   1 file changed, 77 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
> > index 063e69e45163..1775ed154aff 100644
> > --- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
> > +++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
> > @@ -122,6 +122,41 @@ led-0 {
> >   			default-state = "off";
> >   		};
> >   	};
> > +
> > +	tlv320_mclk: clk-0 {
> > +		#clock-cells = <0>;
> > +		compatible = "fixed-clock";
> > +		clock-frequency = <12288000>;
> > +	};
> > +
> > +	codec_audio: sound {
> > +		compatible = "simple-audio-card";
> > +		simple-audio-card,name = "AM62Ax-SKEVM";
> > +		simple-audio-card,widgets =
> > +			"Headphone",	"Headphone Jack",
> > +			"Line",	"Line In",
> > +			"Microphone",	"Microphone Jack";
> > +		simple-audio-card,routing =
> > +			"Headphone Jack",	"HPLOUT",
> > +			"Headphone Jack",	"HPROUT",
> > +			"LINE1L",		"Line In",
> > +			"LINE1R",		"Line In",
> > +			"MIC3R",		"Microphone Jack",
> > +			"Microphone Jack",	"Mic Bias";
> > +		simple-audio-card,format = "dsp_b";
> > +		simple-audio-card,bitclock-master = <&sound_master>;
> > +		simple-audio-card,frame-master = <&sound_master>;
> > +		simple-audio-card,bitclock-inversion;
> > +
> > +		simple-audio-card,cpu {
> > +			sound-dai = <&mcasp1>;
> > +		};
> > +
> > +		sound_master: simple-audio-card,codec {
> > +			sound-dai = <&tlv320aic3106>;
> > +			clocks = <&tlv320_mclk>;
> > +		};
> > +	};
> >   };
> >   &main_pmx0 {
> > @@ -200,6 +235,15 @@ AM62AX_IOPAD(0x130, PIN_INPUT, 0) /* (AB17) RGMII1_TXC */
> >   			AM62AX_IOPAD(0x12c, PIN_INPUT, 0) /* (W16) RGMII1_TX_CTL */
> >   		>;
> >   	};
> > +
> > +	main_mcasp1_pins_default: main-mcasp1-pins-default {
> > +		pinctrl-single,pins = <
> > +			AM62AX_IOPAD(0x090, PIN_INPUT, 2) /* (L19) GPMC0_BE0n_CLE.MCASP1_ACLKX */
> > +			AM62AX_IOPAD(0x098, PIN_INPUT, 2) /* (R18) GPMC0_WAIT0.MCASP1_AFSX */
> > +			AM62AX_IOPAD(0x08c, PIN_OUTPUT, 2) /* (K19) GPMC0_WEn.MCASP1_AXR0 */
> > +			AM62AX_IOPAD(0x084, PIN_INPUT, 2) /* (L18) GPMC0_ADVn_ALE.MCASP1_AXR2 */
> > +		>;
> > +	};
> >   };
> >   &main_i2c0 {
> > @@ -234,6 +278,19 @@ exp1: gpio@22 {
> >   				   "MCASP1_FET_SEL", "UART1_FET_SEL",
> >   				   "PD_I2C_IRQ", "IO_EXP_TEST_LED";
> >   	};
> > +
> > +	tlv320aic3106: audio-codec@1b {
> > +		#sound-dai-cells = <0>;
> > +		compatible = "ti,tlv320aic3106";
> > +		reg = <0x1b>;
> > +		ai3x-micbias-vg = <1>;		/* 2.0V */
> > +		status = "okay";
> 
> No need for status property here I guess????

Will fix.

> 
> > +
> > +		/* Regulators */
> > +		AVDD-supply = <&vcc_3v3_sys>;
> > +		IOVDD-supply = <&vcc_3v3_sys>;
> > +		DRVDD-supply = <&vcc_3v3_sys>;
> 
> DVDD 1.8V supply here looks missing???

Sorry I missed to add a note in the commit message, will add in v6.

DVDD 1.8V is supplied by the PMIC (TPS6593x-Q1) on the SK, the driver 
and dt-bindings for it are still being worked on:
https://lore.kernel.org/all/20230216114410.183489-1-jpanis@baylibre.com/

The codec can be enabled without it for now, as it only uses the 
regulators to calculate the OCMV, which I will supply manually to the 
codec through DT in v6.

> 
> Reviewed-by: Jayesh Choudhary <j-choudhary@...com>
> 
> > +	};
> >   };
> >   &sdhci1 {
> > @@ -302,3 +359,23 @@ cpsw3g_phy0: ethernet-phy@0 {
> >   		ti,min-output-impedance;
> >   	};
> >   };
> > +
> > +&mcasp1 {
> > +	status = "okay";
> > +	#sound-dai-cells = <0>;
> > +
> > +	pinctrl-names = "default";
> > +	pinctrl-0 = <&main_mcasp1_pins_default>;
> > +
> > +	op-mode = <0>;          /* MCASP_IIS_MODE */
> > +	tdm-slots = <2>;
> > +
> > +	serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
> > +	       1 0 2 0
> > +	       0 0 0 0
> > +	       0 0 0 0
> > +	       0 0 0 0
> > +	>;
> > +	tx-num-evt = <32>;
> > +	rx-num-evt = <32>;
> > +};
> > 

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