linux-kernel - Re: [PATCH 2/6] ASoC: tegra: Add Tegra186 based ASRC driver

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Date:   Tue, 29 Mar 2022 12:30:57 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Sameer Pujar <spujar@...dia.com>
Cc:     robh+dt@...nel.org, krzk+dt@...nel.org, thierry.reding@...il.com,
        lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.com,
        jonathanh@...dia.com, catalin.marinas@....com, will@...nel.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/6] ASoC: tegra: Add Tegra186 based ASRC driver

On Tue, Mar 29, 2022 at 02:02:34PM +0530, Sameer Pujar wrote:
> On 28-03-2022 21:14, Mark Brown wrote:
> > On Mon, Mar 28, 2022 at 11:35:22AM +0530, Sameer Pujar wrote:

> > > +	/* Source of ratio provider */
> > > +	SOC_ENUM_EXT("Ratio1 Source", src_select1,
> > > +		     tegra186_asrc_get_ratio_source,
> > > +		     tegra186_asrc_put_ratio_source),

> > ...the sources?  Or does it need to be configured before either side is
> > ready in which case this might be the best we can do for now.

> The ratio needs to be updated before start of the stream and this
> programming via controls is required only when the ratio source is SW.
> When ratio detector module is used (support is not yet added), the
> ratio is automatically updated by HW.

OK, that's not ideal but should be fine for now.  Ideally we'd have the
rate detector support introduced in the same release.

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