[PATCH v4 13/22] ASoC: tegra20: i2s: Filter out unsupported rates

[Thierry Reding]

On Sat, Dec 04, 2021 at 05:37:16PM +0300, Dmitry Osipenko wrote:
> Support new nvidia,fixed-parent-rate device-tree property which instructs
> I2S that board wants parent clock rate to stay at a fixed rate. This allows
> to play audio over S/PDIF and I2S simultaneously. The root of the problem
> is that audio components on Tegra share the same audio PLL, and thus, only
> a subset of rates can be supported if we want to play audio simultaneously.
> Filter out audio rates that don't match parent clock rate if device-tree
> has the nvidia,fixed-parent-rate property.
> 
> Signed-off-by: Dmitry Osipenko <digetx at gmail.com>
> ---
>  sound/soc/tegra/tegra20_i2s.c | 49 +++++++++++++++++++++++++++++++++++
>  1 file changed, 49 insertions(+)

Acked-by: Thierry Reding <treding at nvidia.com>
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