[PATCH 2/4] ASoC: dt-bindings: add ESS Technology ES9039Q2M
flat view
COLD48d
From: Karl Asseily <hidden>
Date: 2026-08-20 06:26:43
Also in:
linux-sound, 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
Revision v1 of 4 in this series.
Revisions (4)
- v1 current
- v2 [diff vs current]
- v3 [diff vs current]
- v4 [diff vs current]
Add a binding for the ES9039Q2M, a 32-bit two-channel audio DAC with an asynchronous sample rate converter. The part selects between two control personalities with its MODE pin: hardware mode, strapped by HW0/HW1/HW2 with no control bus at all, and software mode over I2C or SPI. This binding describes software mode over I2C, which MODE = GND selects. Signed-off-by: Karl Asseily <redacted> --- .../bindings/sound/ess,es9039q2m.yaml | 61 +++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/ess,es9039q2m.yaml
diff --git a/Documentation/devicetree/bindings/sound/ess,es9039q2m.yaml b/Documentation/devicetree/bindings/sound/ess,es9039q2m.yaml
new file mode 100644
index 00000000000..b52c4cc5304
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ess,es9039q2m.yaml@@ -0,0 +1,61 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/ess,es9039q2m.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ESS Technology ES9039Q2M audio DAC + +maintainers: + - Karl Asseily <karl@asseily.com> + +description: + The ES9039Q2M is a 32-bit two-channel audio DAC supporting PCM to 768 kHz, + DSD64 to DSD1024, DoP and S/PDIF. It is controlled over I2C or SPI when the + MODE pin selects software mode; this binding covers the I2C interface. The + part contains an asynchronous sample rate converter, so the system clock need + not be synchronous with the audio bit or frame clocks. + +allOf: + - $ref: dai-common.yaml# + +properties: + compatible: + const: ess,es9039q2m + + reg: + description: + I2C address, selected by the ADDR0 and ADDR1 pins - 0x48, 0x49, 0x4a or + 0x4b for GND/GND, GND/AVDD, AVDD/GND and AVDD/AVDD respectively. + enum: [ 0x48, 0x49, 0x4a, 0x4b ] + + clocks: + maxItems: 1 + + clock-names: + const: mclk + + "#sound-dai-cells": + const: 0 + +required: + - compatible + - reg + - "#sound-dai-cells" + +unevaluatedProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + audio-codec@48 { + compatible = "ess,es9039q2m"; + reg = <0x48>; + #sound-dai-cells = <0>; + clocks = <&dac_mclk>; + clock-names = "mclk"; + }; + };
--
2.34.1