From: Chancel Liu <chancel.liu@nxp.com>
To: lgirdwood@gmail.com, broonie@kernel.org, robh@kernel.org,
krzk+dt@kernel.org, conor+dt@kernel.org, Frank.Li@nxp.com,
shengjiu.wang@gmail.com, s.hauer@pengutronix.de,
kernel@pengutronix.de, festevam@gmail.com,
linux-sound@vger.kernel.org, devicetree@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v3] ASoC: dt-bindings: imx-card: Add dsp_a DAI format
Date: Fri, 27 Mar 2026 12:15:04 +0900 [thread overview]
Message-ID: <20260327031504.497650-1-chancel.liu@nxp.com> (raw)
Existing i.MX audio sound card described by this binding use codecs
that operate in i2s or dsp_b formats. The newly added CS42448 codec
requires dsp_a for its TDM interface. To properly describe such
hardware in DT, the binding needs to allow dsp_a DAI format.
Only i2s, dsp_b and dsp_a are included because these are the formats
actually used by the hardware supported by this binding. Other formats
such as left_j, right_j, ac97 are not used or required by the hardware
currently covered by this binding, so they are intentionally not added.
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
---
Changes in v3:
- Rewrote commit message completely to describe hardware requirements.
Explicitly documented why only dsp_a is added and why other formats
are not included.
- Rebased on latest code base. No functional changes.
Changes in v2:
- Updated commit message to explain current support for i2s and dsp_b
formats and new support for dsp_a. No code changes.
Documentation/devicetree/bindings/sound/imx-audio-card.yaml | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/sound/imx-audio-card.yaml b/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
index 5424d4f16f52..75757fbccd89 100644
--- a/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
+++ b/Documentation/devicetree/bindings/sound/imx-audio-card.yaml
@@ -37,6 +37,7 @@ patternProperties:
items:
enum:
- i2s
+ - dsp_a
- dsp_b
dai-tdm-slot-num: true
--
2.50.1
next reply other threads:[~2026-03-27 3:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-27 3:15 Chancel Liu [this message]
2026-03-27 6:06 ` [PATCH v3] ASoC: dt-bindings: imx-card: Add dsp_a DAI format Shengjiu Wang
2026-03-28 9:37 ` Chancel Liu
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