[PATCH v3 03/20] ASoC: dt-bindings: tegra20-i2s: Document new nvidia,fixed-parent-rate property
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2021-12-02 16:25:43
Also in:
alsa-devel, dri-devel, linux-tegra, lkml
Subsystem:
open firmware and flattened device tree bindings, sound - soc layer / dynamic audio power management (asoc), the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Liam Girdwood, Mark Brown, Linus Torvalds
Document new nvidia,fixed-parent-rate property which instructs that this board wants parent clock to stay at a fixed rate. It allows to prevent conflicts between audio components that share same parent PLL. For instance, this property allows to have HDMI audio, speaker and headphones in the system playing audio simultaneously, which is a common pattern for consumer devices. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- .../devicetree/bindings/sound/nvidia,tegra20-i2s.yaml | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
index ad43b237d9af..68ae124eaf80 100644
--- a/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra20-i2s.yaml@@ -42,6 +42,13 @@ properties: - const: rx - const: tx + nvidia,fixed-parent-rate: + description: | + Specifies whether board prefers parent clock to stay at a fixed rate. + This allows multiple Tegra20 audio components work simultaneously by + limiting number of supportable audio rates. + type: boolean + required: - compatible - reg
--
2.33.1