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Message-Id: <20250224155500.52462-4-francesco@dolcini.it>
Date: Mon, 24 Feb 2025 16:54:58 +0100
From: Francesco Dolcini <francesco@...cini.it>
To: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Saravana Kannan <saravanak@...gle.com>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>,
patches@...nsource.cirrus.com
Cc: Ernest Van Hoecke <ernest.vanhoecke@...adex.com>,
linux-sound@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Francesco Dolcini <francesco.dolcini@...adex.com>,
Charles Keepax <ckeepax@...nsource.cirrus.com>
Subject: [PATCH v2 3/5] ASoC: dt-bindings: wm8904: Add DMIC, GPIO, MIC and EQ support
From: Ernest Van Hoecke <ernest.vanhoecke@...adex.com>
Add two properties to select the IN1L/DMICDAT1 and IN2R/DMICDAT2
functionality:
- wlf,in1l-as-dmicdat1
- wlf,in1r-as-dmicdat2
Add a property to describe the GPIO configuration registers, that can be
used to set the four multifunction pins:
- wlf,gpio-cfg
Add a property to describe the mic bias control registers:
- wlf,mic-cfg
Add two properties to describe the Dynamic Range Controller (DRC),
allowing multiple named configurations where each config sets the 4 DRC
registers (R40-R43):
- wlf,drc-cfg-regs
- wlf,drc-cfg-names
Add three properties to describe the equalizer (ReTune Mobile), allowing
multiple named configurations (associated with a samplerate) that set
the 24 (R134-R157) EQ registers:
- wlf,retune-mobile-cfg-regs
- wlf,retune-mobile-cfg-names
- wlf,retune-mobile-cfg-rates
Datasheet: https://statics.cirrus.com/pubs/proDatasheet/WM8904_Rev4.1.pdf
Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@...adex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
Reviewed-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
v2: Added an example of how to use the ReTune Mobile config properties
v1: https://lore.kernel.org/lkml/20250206163152.423199-4-francesco@dolcini.it/
---
.../devicetree/bindings/sound/wlf,wm8904.yaml | 106 ++++++++++++++++++
1 file changed, 106 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/wlf,wm8904.yaml b/Documentation/devicetree/bindings/sound/wlf,wm8904.yaml
index 329260cf0fa0..f4338efaee18 100644
--- a/Documentation/devicetree/bindings/sound/wlf,wm8904.yaml
+++ b/Documentation/devicetree/bindings/sound/wlf,wm8904.yaml
@@ -38,6 +38,74 @@ properties:
DCVDD-supply: true
MICVDD-supply: true
+ wlf,in1l-as-dmicdat1:
+ type: boolean
+ description:
+ Use IN1L/DMICDAT1 as DMICDAT1, enabling the DMIC input path.
+
+ wlf,in1r-as-dmicdat2:
+ type: boolean
+ description:
+ Use IN1R/DMICDAT2 as DMICDAT2, enabling the DMIC input path.
+
+ wlf,gpio-cfg:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 4
+ maxItems: 4
+ description:
+ Default register values for R121/122/123/124 (GPIO Control).
+ If any entry has the value 0xFFFF, the related register won't be set.
+ default: [0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF]
+
+ wlf,mic-cfg:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 2
+ maxItems: 2
+ description:
+ Default register values for R6/R7 (Mic Bias Control).
+ default: [0, 0]
+
+ wlf,drc-cfg-names:
+ $ref: /schemas/types.yaml#/definitions/string-array
+ description:
+ List of strings for the available DRC modes.
+ If absent, DRC is disabled.
+
+ wlf,drc-cfg-regs:
+ $ref: /schemas/types.yaml#/definitions/uint16-array
+ description:
+ Default register values for R40/41/42/43 (DRC).
+ The list must be 4 times the length of wlf,drc-cfg-names.
+ If absent, DRC is disabled.
+
+ wlf,retune-mobile-cfg-names:
+ $ref: /schemas/types.yaml#/definitions/string-array
+ description:
+ List of strings for the available retune modes.
+ If absent, retune is disabled.
+
+ wlf,retune-mobile-cfg-rates:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description:
+ List of rates for the available retune modes.
+ The list must be the same length as wlf,retune-mobile-cfg-names.
+ If absent, retune is disabled.
+
+ wlf,retune-mobile-cfg-regs:
+ $ref: /schemas/types.yaml#/definitions/uint16-array
+ description:
+ Default register values for R134/.../157 (EQ).
+ The list must be 24 times the length of wlf,retune-mobile-cfg-names.
+ If absent, retune is disabled.
+
+dependencies:
+ wlf,drc-cfg-names: [ 'wlf,drc-cfg-regs' ]
+ wlf,drc-cfg-regs: [ 'wlf,drc-cfg-names' ]
+
+ wlf,retune-mobile-cfg-names: [ 'wlf,retune-mobile-cfg-rates', 'wlf,retune-mobile-cfg-regs' ]
+ wlf,retune-mobile-cfg-regs: [ 'wlf,retune-mobile-cfg-names', 'wlf,retune-mobile-cfg-rates' ]
+ wlf,retune-mobile-cfg-rates: [ 'wlf,retune-mobile-cfg-names', 'wlf,retune-mobile-cfg-regs' ]
+
required:
- compatible
- reg
@@ -70,5 +138,43 @@ examples:
DBVDD-supply = <®_1p8v>;
DCVDD-supply = <®_1p8v>;
MICVDD-supply = <®_1p8v>;
+
+ wlf,drc-cfg-names = "default", "peaklimiter", "tradition", "soft", "music";
+ wlf,drc-cfg-regs =
+ /* coded default: KNEE_IP = KNEE_OP = 0, HI_COMP = LO_COMP = 1 */
+ /bits/ 16 <0x01af 0x3248 0x0000 0x0000>,
+ /* coded default: KNEE_IP = -24, KNEE_OP = -6, HI_COMP = 1/4, LO_COMP = 1 */
+ /bits/ 16 <0x04af 0x324b 0x0010 0x0408>,
+ /* coded default: KNEE_IP = -42, KNEE_OP = -3, HI_COMP = 0, LO_COMP = 1 */
+ /bits/ 16 <0x04af 0x324b 0x0028 0x0704>,
+ /* coded default: KNEE_IP = -45, KNEE_OP = -9, HI_COMP = 1/8, LO_COMP = 1 */
+ /bits/ 16 <0x04af 0x324b 0x0018 0x078c>,
+ /* coded default: KNEE_IP = -30, KNEE_OP = -10.5, HI_COMP = 1/4, LO_COMP = 1 */
+ /bits/ 16 <0x04af 0x324b 0x0010 0x050e>;
+
+ wlf,gpio-cfg = <
+ 0x0018 /* GPIO1 => DMIC_CLK */
+ 0xffff /* GPIO2 => don't touch */
+ 0xffff /* GPIO3 => don't touch */
+ 0xffff /* GPIO4 => don't touch */
+
+ wlf,retune-mobile-cfg-names = "bassboost", "bassboost", "treble";
+ wlf,retune-mobile-cfg-rates = <48000 44100 48000>;
+ wlf,retune-mobile-cfg-regs =
+ /* bassboost: EQ_ENA = 1, +6 dB @ 100 Hz, +3 dB @ 300 Hz, 0 dB @ 875, 2400, 6900 Hz */
+ /bits/ 16 <0x1 0x12 0xf 0xc 0xc 0xc>,
+ /* default values for ReTune Mobile registers 140-157 */
+ /bits/ 16 <0x0fca 0x0400 0x00d8 0x1eb5 0xf145 0x0bd5 0x0075 0x1c58 0xf3d3 0x0a54 0x0568 0x168e 0xf829 0x07ad 0x1103 0x0564 0x0559 0x4000>,
+
+ /* bassboost: EQ_ENA = 1, +6 dB @ 100 Hz, +3 dB @ 300 Hz, 0 dB @ 875, 2400, 6900 Hz */
+ /bits/ 16 <0x1 0x12 0xf 0xc 0xc 0xc>,
+ /* default values for ReTune Mobile registers 140-157 */
+ /bits/ 16 <0x0fca 0x0400 0x00d8 0x1eb5 0xf145 0x0bd5 0x0075 0x1c58 0xf3d3 0x0a54 0x0568 0x168e 0xf829 0x07ad 0x1103 0x0564 0x0559 0x4000>,
+
+ /* treble: EQ_ENA = 1, -2 dB @ 100, 300 Hz, 0 dB @ 875, 2400 Hz, +3 dB @ 6900 Hz */
+ /bits/ 16 <0x1 0xa 0xa 0xc 0xc 0xf>,
+ /* default values for ReTune Mobile registers 140-157 */
+ /bits/ 16 <0x0fca 0x0400 0x00d8 0x1eb5 0xf145 0x0bd5 0x0075 0x1c58 0xf3d3 0x0a54 0x0568 0x168e 0xf829 0x07ad 0x1103 0x0564 0x0559 0x4000>;
+ >;
};
};
--
2.39.5
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