linux-kernel - Re: [PATCH] arm64: dts: imx8mp-msc-sm2s: Add sound card

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Message-ID: <10394cf6-70f0-638a-15d3-5a14615dad44@denx.de>
Date:   Wed, 22 Feb 2023 19:39:31 +0100
From:   Marek Vasut <marex@...x.de>
To:     Marco Felsch <m.felsch@...gutronix.de>,
        Luca Ceresoli <luca.ceresoli@...tlin.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Martyn Welch <martyn.welch@...labora.com>,
        devicetree@...r.kernel.org, Abel Vesa <abel.vesa@....com>,
        Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-kernel@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        linux-arm-kernel@...ts.infradead.org, Jacky Bai <ping.bai@....com>
Subject: Re: [PATCH] arm64: dts: imx8mp-msc-sm2s: Add sound card

On 2/22/23 18:59, Marco Felsch wrote:
> Hi Luca,
> 
> On 23-02-22, Luca Ceresoli wrote:
>> The MSC SM2-MB-EP1 carrier board for the SM2S-IMX8PLUS SMARC module has an
>> NXPP SGTL5000 audio codec connected to I2S-0 (sai2).
>>
>> This requires to:
>>
>>   * add the power supplies (always on)
>>   * enable sai2 with pinmuxes
>>   * reparent the CLKOUT1 clock that feeds the codec SYS_MCLK to
>>     IMX8MP_CLK_24M in order it to generate an accurate 24 MHz rate
>>
>> Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.com>
>> ---
>>   .../dts/freescale/imx8mp-msc-sm2s-ep1.dts     | 60 +++++++++++++++++++
>>   1 file changed, 60 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-msc-sm2s-ep1.dts b/arch/arm64/boot/dts/freescale/imx8mp-msc-sm2s-ep1.dts
>> index 470ff8e31e32..894d9809f76d 100644
>> --- a/arch/arm64/boot/dts/freescale/imx8mp-msc-sm2s-ep1.dts
>> +++ b/arch/arm64/boot/dts/freescale/imx8mp-msc-sm2s-ep1.dts
>> @@ -14,6 +14,57 @@ / {
>>   	compatible = "avnet,sm2s-imx8mp-14N0600E-ep1",
>>   		     "avnet,sm2s-imx8mp-14N0600E", "avnet,sm2s-imx8mp",
>>   		     "fsl,imx8mp";
> 
> ...
> 
>> +/* I2S-0 = sai2 */
>> +&sai2 {
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&pinctrl_sai2>;
>> +
>> +	assigned-clocks = <&clk IMX8MP_CLK_SAI2>;
>> +	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
>> +	assigned-clock-rates = <12288000>;
>> +
>> +	fsl,sai-mclk-direction-output;
>> +	status = "okay";
>>   };
> 
> Do you have some downstream patches for the sai interfaces? AFAIR Marek
> worked on this but the patches are not mainlien yet.

I guess it is time to resubmit these.