[PATCH v2 4/7] dt-bindings: mchp, i2s-mcc: Add property to specify pin pair for TDM
From: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Date: 2021-03-01 21:20:25
Also in:
alsa-devel, linux-devicetree, 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
SAMA7G5's I2S-MCC has 4 pairs of DIN/DOUT pins. Since TDM only uses a single pair of pins for synchronous capture and playback, the controller needs to be told which of the pair is connected. This can be mentioned using the new "microchip,tdm-data-pair" property. The property is optional, needed only if TDM is used, and if it's missing DIN/DOUT 0 pins will be used by default. Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com> --- Changes in v2: - changes are done to mchp-i2s-mcc.txt insted of mchp,i2s-mcc.yaml Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt b/Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt
index 2180dbd9ea81..af8fe3e657df 100644
--- a/Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt
+++ b/Documentation/devicetree/bindings/sound/mchp-i2s-mcc.txt@@ -19,7 +19,12 @@ Required properties: Optional properties: - pinctrl-0: Should specify pin control groups used for this controller. - princtrl-names: Should contain only one value - "default". - +- microchip,tdm-data-pair: 8 bit value that represents the DIN/DOUT pair pins + which are used to receive/send TDM data. It is optional + and it is only needed if the controller uses the TDM + mode. Not available for "microchip,sam9x60-i2smcc" + compatible. If it's not present, the default value is 0, + so the DIN/DOUT 0 pins are used. (1) : Only the peripheral clock is required. The generated clock is optional and should be set mostly when Master Mode is required.
--
2.27.0
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