linux-kernel - Re: [PATCH] ASoC: rt5682: Add fmw property to get name of mclk

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Date:   Mon, 13 Jul 2020 06:46:29 +0530
From:   "Agrawal, Akshu" <aagrawal2@....com>
To:     Mark Brown <broonie@...nel.org>,
        Akshu Agrawal <akshu.agrawal@....com>
Cc:     Oder Chiou <oder_chiou@...ltek.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        "moderated list:SOUND" <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: rt5682: Add fmw property to get name of mclk


On 7/7/2020 4:00 PM, Mark Brown wrote:
> On Tue, Jul 07, 2020 at 03:38:25PM +0530, Akshu Agrawal wrote:
>> Non-dts based systems can use ACPI DSDT to pass on the mclk.
>> Thus add fmw property mclk-name to get the name of the system clk
>> and link it to rt5682 mclk.
> ACPI doesn't support clocks at all, you need to add a clock binding to
> ACPI first.  The idiomatic way to do this would be to have board
> specific quirks.

clk binding is present for AMD ST platform and using the same.

With recent submitted patches I am making them generic for all AMD 
platforms.

Please refer patches:

https://patchwork.kernel.org/patch/11658505/

https://patchwork.kernel.org/patch/11658507/

Thanks,

Akshu

>
>> +	device_property_read_string(dev, "realtek,mclk-name", &rt5682->pdata.mclk_name);
>> +
> No, this is not at all OK - you're adding this via a device property
> which means that this will show up in the DT bindings too.