linux-kernel - Re: [PATCH v3 1/2] arm64: dts: ti: k3-am62-main: Add McASP nodes

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Date:   Fri, 17 Jun 2022 20:16:02 -0500
From:   Nishanth Menon <nm@...com>
To:     Jai Luthra <j-luthra@...com>
CC:     Vignesh Raghavendra <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, Jayesh Choudhary <j-choudhary@...com>
Subject: Re: [PATCH v3 1/2] arm64: dts: ti: k3-am62-main: Add McASP nodes

On 14:20-20220427, Jai Luthra wrote:
> From: Jayesh Choudhary <j-choudhary@...com>
> 
> Add the nodes for McASP 0-2.
> 
> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
> Signed-off-by: Jai Luthra <j-luthra@...com>
> ---
>  arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 51 ++++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> index eec8dae65e7c..942e00f34bfa 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62-main.dtsi
> @@ -530,4 +530,55 @@
>  		ti,mbox-num-users = <4>;
>  		ti,mbox-num-fifos = <16>;
>  	};
> +
> +	mcasp0: mcasp@...0000 {
> +		compatible = "ti,am33xx-mcasp-audio";
> +		reg = <0x00 0x02b00000 0x00 0x2000>,
> +		      <0x00 0x02b08000 0x00 0x400>;
> +		reg-names = "mpu","dat";
> +		interrupts = <GIC_SPI 236 IRQ_TYPE_LEVEL_HIGH>,
> +				<GIC_SPI 235 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "tx", "rx";
> +
> +		dmas = <&main_bcdma 0 0xc500 0>, <&main_bcdma 0 0x4500 0>;
> +		dma-names = "tx", "rx";
> +
> +		clocks = <&k3_clks 190 0>;
> +		clock-names = "fck";


McASP functional clock defaults to a non-audio friendly 100MHz
main_2_hsdivout8_clk clock source. Instead, switch to using a 96MHz
main_1_hsdivout6_clk.

Please add:
assigned-clocks = <&k3_clks 190 0>;
assigned-clock-parents = <&k3_clks 190 2>;


> +		power-domains = <&k3_pds 190 TI_SCI_PD_EXCLUSIVE>;
> +	};
> +
> +	mcasp1: mcasp@...0000 {
> +		compatible = "ti,am33xx-mcasp-audio";
> +		reg = <0x00 0x02b10000 0x00 0x2000>,
> +		      <0x00 0x02b18000 0x00 0x400>;
> +		reg-names = "mpu","dat";
> +		interrupts = <GIC_SPI 238 IRQ_TYPE_LEVEL_HIGH>,
> +				<GIC_SPI 237 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "tx", "rx";
> +
> +		dmas = <&main_bcdma 0 0xc501 0>, <&main_bcdma 0 0x4501 0>;
> +		dma-names = "tx", "rx";
> +
> +		clocks = <&k3_clks 191 0>;
> +		clock-names = "fck";

assigned-clocks = <&k3_clks 191 0>;
assigned-clock-parents = <&k3_clks 191 2>;

> +		power-domains = <&k3_pds 191 TI_SCI_PD_EXCLUSIVE>;
> +	};
> +
> +	mcasp2: mcasp@...0000 {
> +		compatible = "ti,am33xx-mcasp-audio";
> +		reg = <0x00 0x02b20000 0x00 0x2000>,
> +		      <0x00 0x02b28000 0x00 0x400>;
> +		reg-names = "mpu","dat";
> +		interrupts = <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>,
> +				<GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-names = "tx", "rx";
> +
> +		dmas = <&main_bcdma 0 0xc502 0>, <&main_bcdma 0 0x4502 0>;
> +		dma-names = "tx", "rx";
> +
> +		clocks = <&k3_clks 192 0>;
> +		clock-names = "fck";
assigned-clocks = <&k3_clks 192 0>;
assigned-clock-parents = <&k3_clks 192 2>;

> +		power-domains = <&k3_pds 192 TI_SCI_PD_EXCLUSIVE>;
> +	};
>  };
> -- 
> 2.17.1
> 

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D