linux-kernel - Re: [PATCH] ASoC: codecs: rtq9128: Add TDM data source selection

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Date:   Wed, 27 Sep 2023 11:13:22 +0200
From:   Mark Brown <broonie@...nel.org>
To:     cy_huang@...htek.com
Cc:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Allen Lin <allen_lin@...htek.com>, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: codecs: rtq9128: Add TDM data source selection

On Wed, Sep 27, 2023 at 10:06:16AM +0800, cy_huang@...htek.com wrote:

> Since rtq9128 can support 4 channel I2S mode audio data, there are two
> dedicated data input pins for CH12 and CH34.  But in TDM mode, input
> source was already drived on one data pin for multiple data slots. In
> this case, only one input source is needed for TDM mode.
> 
> This patch is to add the data source pin selection for CH12 and CH34.

> +	SOC_ENUM("CH12 TDM Data Select", rtq9128_ch12_tdm_data_select_enum),
> +	SOC_ENUM("CH34 TDM Data Select", rtq9128_ch34_tdm_data_select_enum),

Is this something that's going to be changing dynamically at runtime or
should this be a device property that's set either by firmware or when
we're doing the TDM setup?  This sounds like something I'd expect to be
fixed by the board design.

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