linux-kernel - Re: [Sound-open-firmware] [PATCH v2 3/5] ASoC: SOF: Add DT DSP device support

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Date:   Wed, 7 Aug 2019 11:01:21 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Daniel Baluta <daniel.baluta@...il.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        Peng Fan <peng.fan@....com>,
        Fabio Estevam <festevam@...il.com>,
        Anson Huang <anson.huang@....com>,
        Devicetree List <devicetree@...r.kernel.org>,
        Daniel Baluta <daniel.baluta@....com>,
        "S.j. Wang" <shengjiu.wang@....com>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Paul Olaru <paul.olaru@....com>,
        Rob Herring <robh+dt@...nel.org>,
        dl-linux-imx <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Leonard Crestez <leonard.crestez@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        sound-open-firmware@...a-project.org
Subject: Re: [Sound-open-firmware] [PATCH v2 3/5] ASoC: SOF: Add DT DSP device
 support



On 8/7/19 10:29 AM, Daniel Baluta wrote:
> On Tue, Jul 23, 2019 at 6:19 PM Pierre-Louis Bossart
> <pierre-louis.bossart@...ux.intel.com> wrote:
>>
>>
>>> diff --git a/sound/soc/sof/Kconfig b/sound/soc/sof/Kconfig
>>> index 61b97fc55bb2..2aa3a1cdf60c 100644
>>> --- a/sound/soc/sof/Kconfig
>>> +++ b/sound/soc/sof/Kconfig
>>> @@ -36,6 +36,15 @@ config SND_SOC_SOF_ACPI
>>>          Say Y if you need this option
>>>          If unsure select "N".
>>>
>>> +config SND_SOC_SOF_DT
>>> +     tristate "SOF DT enumeration support"
>>> +     select SND_SOC_SOF
>>> +     select SND_SOC_SOF_OPTIONS
>>> +     help
>>> +       This adds support for Device Tree enumeration. This option is
>>> +       required to enable i.MX8 devices.
>>> +       Say Y if you need this option. If unsure select "N".
>>> +
>>
>> [snip]
>>
>>> diff --git a/sound/soc/sof/imx/Kconfig b/sound/soc/sof/imx/Kconfig
>>> index fff64a9970f0..fa35994a79c4 100644
>>> --- a/sound/soc/sof/imx/Kconfig
>>> +++ b/sound/soc/sof/imx/Kconfig
>>> @@ -12,6 +12,7 @@ if SND_SOC_SOF_IMX_TOPLEVEL
>>>
>>>    config SND_SOC_SOF_IMX8
>>>        tristate "SOF support for i.MX8"
>>> +     select SND_SOC_SOF_DT
>>
>> This looks upside down. You should select SOF_DT first then include the
>> NXP stuff.
> 
> One more thing: So this should be 'depends on SND_SOC_SOF_DT' right?

I would do this:

config SND_SOC_SOF_DT
      	tristate "SOF DT enumeration support"
      	depends on OF # or whatever the top-level DT dependency is
      	select SND_SOC_SOF
      	select SND_SOC_SOF_OPTIONS


config SND_SOC_SOF_IMX_TOPLEVEL
	bool "SOF support for NXP i.MX audio DSPs"
	depends on ARM64 && SND_SOC_SOF_DT || COMPILE_TEST
	
if SND_SOC_SOF_IMX_TOPLEVEL

config SND_SOC_SOF_IMX8
	tristate "SOF support for i.MX8"

In other words push the dependencies at a higher level.