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Applying StaticRocket's helpful grammar fixups and suggestions Co-authored-by: Randolph Sapp <res.sapp@gmail.com> Signed-off-by: Sen Wang <senwang125@gmail.com>
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  • source/linux/Foundational_Components/Kernel/Kernel_Drivers

source/linux/Foundational_Components/Kernel/Kernel_Drivers/Audio.rst

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@@ -90,7 +90,7 @@ in board-level device trees:
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- uint32
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- No :sup:`1`
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- | A fixed multiplier to sampling rate (𝑓\ :sub:`s`) for a given AUXCLK frequency for TX (and RX if ``auxclk-fs-ratio-rx`` not specified).
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| :sup:`1` If not specified, dividers are calculated from ``.set_sysclk`` via the ASoC machine driver. (For common machine driver such as simple-audio-card, audio-graph-card, or audio-graph-card2, this is set via the ``system-clock-frequency = <>`` property in the DAI link or endpoint).
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| :sup:`1` If not specified, dividers are calculated from ``.set_sysclk`` via the ASoC machine driver. The ``system-clock-frequency`` property in the DAI link or endpoint sets this value for common machine drivers such as simple-audio-card, audio-graph-card, or audio-graph-card2).
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| Only applicable when McASP is the master which produces the bit clock.
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| See :ref:`Configuration Guidelines <mcasp-configuration-guidelines>` for details on usage and calculation.
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* - **serial-dir**
@@ -348,8 +348,8 @@ The **simple-audio-card** is a generic machine driver and establishes Digital Au
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links that connect the McASP (CPU-side) to codec(s). These DAI links operate within the ASoC framework, which constitutes part of the ALSA stack.
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Most TI EVMs use simple-audio-card for its simplicity, though audio-graph-card2 or custom machine drivers are also supported.
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audio-graph-card2 describes DAI links through the generic OF-graph ``ports``/``port``/``endpoint`` bindings
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on the McASP node instead of ``simple-audio-card``'s ``cpu``/``codec`` phandle pairs (see the example
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below). It also handles a DPCM (Dynamic PCM) topology, where one front-end stream fans out to, or fans in from, more
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on the McASP node instead of ``simple-audio-card``'s ``cpu``/``codec`` phandle pairs (see the following
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example). It also handles a DPCM (Dynamic PCM) topology, where one front-end stream fans out to, or fans in from, more
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than one backend codec DAI. ``simple-audio-card`` has no mechanism for that: it only ever builds fixed
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one-to-one DAI links. See :ref:`DPCM Topology <mcasp-dpcm-topology>` below.
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All DAI link properties McASP relies on are part of the generic ASoC framework, not specific to any particular machine driver.

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