Merge tag 'sound-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "As the diffstat shows, we've had lots of developments in a wide range
  at this time; the majority of changes are about ASoC, including
  subsystem-wide cleanups, continued SOF / Intel updates and a bunch of
  new drivers (as usual), while there have been some significant (but
  almost invisible) improvements in ALSA core side, too.

  Below are some highlights:

  Core:

   - Faster lookups of control elements with Xarray; normal user won't
     notice, but on the devices with tons of control elements, it can be
     visibly faster

   - Support for input validation for controls; this will harden for
     badly written drivers in general with a slight overhead

   - Deferred async signal handling for working around the potential
     deadlocks

   - Cleanup / refactoring raw MIDI locking code

  ASoC:

   - Restructing of the set_fmt() callbacks for making things clearer in
     situations like CODEC to CODEC links

   - Clean up and modernizing the DAI naming scheme setups

   - Merge of more of the Intel AVS driver stack, including some board
     integrations

   - New version 4 mechanism for communication with SOF DSPs

   - Suppoort for dynamically selecting the PLL to use at runtime on
     i.MX platforms

   - Improvements for CODEC to CODEC support in the generic cards

   - Support for AMD Jadeite and various machines, AMD RPL, Intel
     MetorLake DSPs, Mediatek MT8186 DSPs and MT6366, nVidia Tegra
     MDDRC, OPE and PEQ, NXP TFA9890, Qualcomm SDM845, WCD9335 and
     WAS883x, and Texas Instruments TAS2780

  HD- and USB-audio:

   - Continued improvement for CS35L41 (sub)codec support

   - More quirks for various devices (HP, Lenovo, Dell, Clevo)"

* tag 'sound-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (778 commits)
  ALSA: hda/realtek: Add quirk for HP Spectre x360 15-eb0xxx
  ALSA: line6: Replace sprintf() with sysfs_emit()
  ALSA: hda: Replace sprintf() with sysfs_emit()
  ALSA: pcm: Replace sprintf() with sysfs_emit()
  ALSA: core: Replace scnprintf() with sysfs_emit()
  ALSA: control-led: Replace sprintf() with sysfs_emit()
  ALSA: aoa: Replace sprintf() with sysfs_emit()
  ALSA: ac97: Replace sprintf() with sysfs_emit()
  ALSA: hda/realtek: Add quirk for Clevo NV45PZ
  ALSA: hda/realtek: Add quirk for Lenovo Yoga9 14IAP7
  ALSA: control: Use deferred fasync helper
  ALSA: pcm: Use deferred fasync helper
  ALSA: timer: Use deferred fasync helper
  ALSA: core: Add async signal helpers
  ASoC: q6asm: use kcalloc() instead of kzalloc()
  ACPI: scan: Add CLSA0101 Laptop Support
  ALSA: hda: cs35l41: Support CLSA0101
  ALSA: hda: cs35l41: Use the CS35L41 HDA internal define
  ASoC: dt-bindings: use spi-peripheral-props.yaml
  ASoC: codecs: va-macro: use fsgen as clock
  ...

39 files changed, 1223 insertions, 336 deletions

diff --git a/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml b/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
new file mode 100644
index 000000000000..3e63f79890b4
--- /dev/null
+++ b/Documentation/devicetree/bindings/dsp/mediatek,mt8186-dsp.yaml
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dsp/mediatek,mt8186-dsp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek mt8186 DSP core
+
+maintainers:
+  - Tinghan Shen <tinghan.shen@mediatek.com>
+
+description: |
+  MediaTek mt8186 SoC contains a DSP core used for
+  advanced pre- and post- audio processing.
+
+properties:
+  compatible:
+    const: mediatek,mt8186-dsp
+
+  reg:
+    items:
+      - description: Address and size of the DSP config registers
+      - description: Address and size of the DSP SRAM
+      - description: Address and size of the DSP secure registers
+      - description: Address and size of the DSP bus registers
+
+  reg-names:
+    items:
+      - const: cfg
+      - const: sram
+      - const: sec
+      - const: bus
+
+  clocks:
+    items:
+      - description: mux for audio dsp clock
+      - description: mux for audio dsp local bus
+
+  clock-names:
+    items:
+      - const: audiodsp
+      - const: adsp_bus
+
+  power-domains:
+    maxItems: 1
+
+  mboxes:
+    items:
+      - description: mailbox for receiving audio DSP requests.
+      - description: mailbox for transmitting requests to audio DSP.
+
+  mbox-names:
+    items:
+      - const: rx
+      - const: tx
+
+  memory-region:
+    items:
+      - description: dma buffer between host and DSP.
+      - description: DSP system memory.
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+  - power-domains
+  - mbox-names
+  - mboxes
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8186-clk.h>
+    dsp@10680000 {
+        compatible = "mediatek,mt8186-dsp";
+        reg = <0x10680000 0x2000>,
+              <0x10800000 0x100000>,
+              <0x1068b000 0x100>,
+              <0x1068f000 0x1000>;
+        reg-names = "cfg", "sram", "sec", "bus";
+        clocks = <&topckgen CLK_TOP_AUDIODSP>,
+                 <&topckgen CLK_TOP_ADSP_BUS>;
+        clock-names = "audiodsp",
+                      "adsp_bus";
+        power-domains = <&spm 6>;
+        mbox-names = "rx", "tx";
+        mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;
+    };
diff --git a/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml b/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml
index b7e68b0dfa13..ca8d8661f872 100644
--- a/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml
+++ b/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.yaml
@@ -50,13 +50,13 @@ properties:
 
   mboxes:
     items:
-      - description: ipc reply between host and audio DSP.
-      - description: ipc request between host and audio DSP.
+      - description: mailbox for receiving audio DSP requests.
+      - description: mailbox for transmitting requests to audio DSP.
 
   mbox-names:
     items:
-      - const: mbox0
-      - const: mbox1
+      - const: rx
+      - const: tx
 
   memory-region:
     items:
@@ -100,6 +100,6 @@ examples:
        memory-region = <&adsp_dma_mem_reserved>,
                        <&adsp_mem_reserved>;
        power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP
-       mbox-names = "mbox0", "mbox1";
+       mbox-names = "rx", "tx";
        mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;
     };
diff --git a/Documentation/devicetree/bindings/sound/adi,adau1977.yaml b/Documentation/devicetree/bindings/sound/adi,adau1977.yaml
index b80454ad97da..847b83398d3d 100644
--- a/Documentation/devicetree/bindings/sound/adi,adau1977.yaml
+++ b/Documentation/devicetree/bindings/sound/adi,adau1977.yaml
@@ -32,8 +32,6 @@ properties:
   reset-gpios:
     maxItems: 1
 
-  spi-max-frequency: true
-
   AVDD-supply:
     description: Analog power support for the device.
 
@@ -52,7 +50,10 @@ required:
   - compatible
   - AVDD-supply
 
-additionalProperties: false
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
 
 examples:
   - |
diff --git a/Documentation/devicetree/bindings/sound/adi,max98396.yaml b/Documentation/devicetree/bindings/sound/adi,max98396.yaml
index ec4c10c2598a..8d2ef991db40 100644
--- a/Documentation/devicetree/bindings/sound/adi,max98396.yaml
+++ b/Documentation/devicetree/bindings/sound/adi,max98396.yaml
@@ -24,6 +24,21 @@ properties:
     maxItems: 1
     description: I2C address of the device.
 
+  avdd-supply:
+    description: A 1.8V supply that powers up the AVDD pin.
+
+  dvdd-supply:
+    description: A 1.2V supply that powers up the DVDD pin.
+
+  dvddio-supply:
+    description: A 1.2V or 1.8V supply that powers up the VDDIO pin.
+
+  pvdd-supply:
+    description: A 3.0V to 20V supply that powers up the PVDD pin.
+
+  vbat-supply:
+    description: A 3.3V to 5.5V supply that powers up the VBAT pin.
+
   adi,vmon-slot-no:
     description: slot number of the voltage sense monitor
     $ref: "/schemas/types.yaml#/definitions/uint32"
@@ -36,13 +51,22 @@ properties:
     $ref: "/schemas/types.yaml#/definitions/uint32"
     minimum: 0
     maximum: 15
-    default: 0
+    default: 1
 
   adi,spkfb-slot-no:
     description: slot number of speaker DSP monitor
     $ref: "/schemas/types.yaml#/definitions/uint32"
     minimum: 0
     maximum: 15
+    default: 2
+
+  adi,bypass-slot-no:
+    description:
+      Selects the PCM data input channel that is routed to the speaker
+      audio processing bypass path.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    minimum: 0
+    maximum: 15
     default: 0
 
   adi,interleave-mode:
@@ -72,6 +96,10 @@ examples:
         max98396: amplifier@39 {
             compatible = "adi,max98396";
             reg = <0x39>;
+            dvdd-supply = <&regulator_1v2>;
+            dvddio-supply = <&regulator_1v8>;
+            avdd-supply = <&regulator_1v8>;
+            pvdd-supply = <&regulator_pvdd>;
             adi,vmon-slot-no = <0>;
             adi,imon-slot-no = <1>;
             reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun50i-a64-codec-analog.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun50i-a64-codec-analog.yaml
index 3b764415c9ab..66859eb8f79a 100644
--- a/Documentation/devicetree/bindings/sound/allwinner,sun50i-a64-codec-analog.yaml
+++ b/Documentation/devicetree/bindings/sound/allwinner,sun50i-a64-codec-analog.yaml
@@ -21,6 +21,11 @@ properties:
     description:
       Regulator for the headphone amplifier
 
+  allwinner,internal-bias-resistor:
+    description:
+      Enable the internal 2.2K bias resistor between HBIAS and MICDET pins
+    type: boolean
+
 required:
   - compatible
   - reg
diff --git a/Documentation/devicetree/bindings/sound/atmel,sama5d2-classd.yaml b/Documentation/devicetree/bindings/sound/atmel,sama5d2-classd.yaml
new file mode 100644
index 000000000000..43d04702ac2d
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/atmel,sama5d2-classd.yaml
@@ -0,0 +1,100 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/atmel,sama5d2-classd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel ClassD Amplifier
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+  - Alexandre Belloni <alexandre.belloni@bootlin.com>
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+  The Audio Class D Amplifier (CLASSD) is a digital input, Pulse Width
+  Modulated (PWM) output stereo Class D amplifier.
+
+properties:
+  compatible:
+    const: atmel,sama5d2-classd
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  dmas:
+    maxItems: 1
+
+  dma-names:
+    const: tx
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: gclk
+
+  atmel,model:
+    $ref: /schemas/types.yaml#/definitions/string
+    default: CLASSD
+    description: The user-visible name of this sound complex.
+
+  atmel,pwm-type:
+    $ref: /schemas/types.yaml#/definitions/string
+    enum:
+      - single
+      - diff
+    default: single
+    description: PWM modulation type.
+
+  atmel,non-overlap-time:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum:
+      - 5
+      - 10
+      - 15
+      - 20
+    default: 10
+    description:
+      Set non-overlapping time, the unit is nanosecond(ns).
+      Non-overlapping will be disabled if not specified.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - dmas
+  - dma-names
+  - clock-names
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/dma/at91.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    classd: sound@fc048000 {
+        compatible = "atmel,sama5d2-classd";
+        reg = <0xfc048000 0x100>;
+        interrupts = <59 IRQ_TYPE_LEVEL_HIGH 7>;
+        dmas = <&dma0
+            (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
+            | AT91_XDMAC_DT_PERID(47))>;
+        dma-names = "tx";
+        clocks = <&classd_clk>, <&classd_gclk>;
+        clock-names = "pclk", "gclk";
+        assigned-clocks = <&classd_gclk>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_classd_default>;
+        atmel,model = "classd @ SAMA5D2-Xplained";
+        atmel,pwm-type = "diff";
+        atmel,non-overlap-time = <10>;
+    };
diff --git a/Documentation/devicetree/bindings/sound/atmel,sama5d2-i2s.yaml b/Documentation/devicetree/bindings/sound/atmel,sama5d2-i2s.yaml
new file mode 100644
index 000000000000..0cd1ff89baed
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/atmel,sama5d2-i2s.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/atmel,sama5d2-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel I2S controller
+
+maintainers:
+  - Nicolas Ferre <nicolas.ferre@microchip.com>
+  - Alexandre Belloni <alexandre.belloni@bootlin.com>
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+  Atmel I2S (Inter-IC Sound Controller) bus is the standard
+  interface for connecting audio devices, such as audio codecs.
+
+properties:
+  compatible:
+    const: atmel,sama5d2-i2s
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Peripheral clock
+      - description: Generated clock (Optional)
+      - description: I2S mux clock (Optional). Set
+          with gclk when Master Mode is required.
+    minItems: 1
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: gclk
+      - const: muxclk
+    minItems: 1
+
+  dmas:
+    items:
+      - description: TX DMA Channel
+      - description: RX DMA Channel
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - dmas
+  - dma-names
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/dma/at91.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    i2s@f8050000 {
+        compatible = "atmel,sama5d2-i2s";
+        reg = <0xf8050000 0x300>;
+        interrupts = <54 IRQ_TYPE_LEVEL_HIGH 7>;
+        dmas = <&dma0
+                (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
+                AT91_XDMAC_DT_PERID(31))>,
+               <&dma0
+                (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
+                AT91_XDMAC_DT_PERID(32))>;
+        dma-names = "tx", "rx";
+        clocks = <&i2s0_clk>, <&i2s0_gclk>, <&i2s0muxck>;
+        clock-names = "pclk", "gclk", "muxclk";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_i2s0_default>;
+    };
diff --git a/Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml b/Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml
new file mode 100644
index 000000000000..f320b561f24c
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/atmel,sama5d2-pdmic.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/atmel,sama5d2-pdmic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel PDMIC decoder
+
+maintainers:
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description:
+  Atmel Pulse Density Modulation Interface Controller
+  (PDMIC) peripheral is a mono PDM decoder module
+  that decodes an incoming PDM sample stream.
+
+properties:
+  compatible:
+    const: atmel,sama5d2-pdmic
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: peripheral clock
+      - description: generated clock
+
+  clock-names:
+    items:
+      - const: pclk
+      - const: gclk
+
+  dmas:
+    maxItems: 1
+
+  dma-names:
+    const: rx
+
+  atmel,mic-min-freq:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The minimal frequency that the microphone supports.
+
+  atmel,mic-max-freq:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The maximal frequency that the microphone supports.
+
+  atmel,model:
+    $ref: /schemas/types.yaml#/definitions/string
+    default: PDMIC
+    description: The user-visible name of this sound card.
+
+  atmel,mic-offset:
+    $ref: /schemas/types.yaml#/definitions/int32
+    default: 0
+    description: The offset that should be added.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - dmas
+  - dma-names
+  - clock-names
+  - clocks
+  - atmel,mic-min-freq
+  - atmel,mic-max-freq
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/dma/at91.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    pdmic: sound@f8018000 {
+        compatible = "atmel,sama5d2-pdmic";
+        reg = <0xf8018000 0x124>;
+        interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
+        dmas = <&dma0
+                (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
+                | AT91_XDMAC_DT_PERID(50))>;
+        dma-names = "rx";
+        clocks = <&pdmic_clk>, <&pdmic_gclk>;
+        clock-names = "pclk", "gclk";
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_pdmic_default>;
+        atmel,model = "PDMIC@sama5d2_xplained";
+        atmel,mic-min-freq = <1000000>;
+        atmel,mic-max-freq = <3246000>;
+        atmel,mic-offset = <0x0>;
+    };
diff --git a/Documentation/devicetree/bindings/sound/atmel-classd.txt b/Documentation/devicetree/bindings/sound/atmel-classd.txt
deleted file mode 100644
index 898551076382..000000000000
--- a/Documentation/devicetree/bindings/sound/atmel-classd.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-* Atmel ClassD driver under ALSA SoC architecture
-
-Required properties:
-- compatible
-	Should be "atmel,sama5d2-classd".
-- reg
-	Should contain ClassD registers location and length.
-- interrupts
-	Should contain the IRQ line for the ClassD.
-- dmas
-	One DMA specifiers as described in atmel-dma.txt and dma.txt files.
-- dma-names
-	Must be "tx".
-- clock-names
-	Tuple listing input clock names.
-	Required elements: "pclk" and "gclk".
-- clocks
-	Please refer to clock-bindings.txt.
-- assigned-clocks
-	Should be <&classd_gclk>.
-
-Optional properties:
-- pinctrl-names, pinctrl-0
-	Please refer to pinctrl-bindings.txt.
-- atmel,model
-	The user-visible name of this sound complex.
-	The default value is "CLASSD".
-- atmel,pwm-type
-	PWM modulation type, "single" or "diff".
-	The default value is "single".
-- atmel,non-overlap-time
-	Set non-overlapping time, the unit is nanosecond(ns).
-	There are four values,
-	<5>, <10>, <15>, <20>, the default value is <10>.
-	Non-overlapping will be disabled if not specified.
-
-Example:
-classd: classd@fc048000 {
-		compatible = "atmel,sama5d2-classd";
-		reg = <0xfc048000 0x100>;
-		interrupts = <59 IRQ_TYPE_LEVEL_HIGH 7>;
-		dmas = <&dma0
-			(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
-			| AT91_XDMAC_DT_PERID(47))>;
-		dma-names = "tx";
-		clocks = <&classd_clk>, <&classd_gclk>;
-		clock-names = "pclk", "gclk";
-		assigned-clocks = <&classd_gclk>;
-
-		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_classd_default>;
-		atmel,model = "classd @ SAMA5D2-Xplained";
-		atmel,pwm-type = "diff";
-		atmel,non-overlap-time = <10>;
-};
diff --git a/Documentation/devicetree/bindings/sound/atmel-i2s.txt b/Documentation/devicetree/bindings/sound/atmel-i2s.txt
deleted file mode 100644
index 40549f496a81..000000000000
--- a/Documentation/devicetree/bindings/sound/atmel-i2s.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-* Atmel I2S controller
-
-Required properties:
-- compatible:     Should be "atmel,sama5d2-i2s".
-- reg:            Should be the physical base address of the controller and the
-                  length of memory mapped region.
-- interrupts:     Should contain the interrupt for the controller.
-- dmas:           Should be one per channel name listed in the dma-names property,
-                  as described in atmel-dma.txt and dma.txt files.
-- dma-names:      Two dmas have to be defined, "tx" and "rx".
-                  This IP also supports one shared channel for both rx and tx;
-                  if this mode is used, one "rx-tx" name must be used.
-- clocks:         Must contain an entry for each entry in clock-names.
-                  Please refer to clock-bindings.txt.
-- clock-names:    Should be one of each entry matching the clocks phandles list:
-                  - "pclk" (peripheral clock) Required.
-                  - "gclk" (generated clock) Optional (1).
-                  - "muxclk" (I2S mux clock) Optional (1).
-
-Optional properties:
-- pinctrl-0:      Should specify pin control groups used for this controller.
-- princtrl-names: Should contain only one value - "default".
-
-
-(1) : Only the peripheral clock is required. The generated clock and the I2S
-      mux clock are optional and should only be set together, when Master Mode
-      is required.
-
-Example:
-
-	i2s@f8050000 {
-		compatible = "atmel,sama5d2-i2s";
-		reg = <0xf8050000 0x300>;
-		interrupts = <54 IRQ_TYPE_LEVEL_HIGH 7>;
-		dmas = <&dma0
-			(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
-			 AT91_XDMAC_DT_PERID(31))>,
-		       <&dma0
-			(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
-			 AT91_XDMAC_DT_PERID(32))>;
-		dma-names = "tx", "rx";
-		clocks = <&i2s0_clk>, <&i2s0_gclk>, <&i2s0muxck>;
-		clock-names = "pclk", "gclk", "muxclk";
-		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_i2s0_default>;
-	};
diff --git a/Documentation/devicetree/bindings/sound/atmel-pdmic.txt b/Documentation/devicetree/bindings/sound/atmel-pdmic.txt
deleted file mode 100644
index e0875f17c229..000000000000
--- a/Documentation/devicetree/bindings/sound/atmel-pdmic.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-* Atmel PDMIC driver under ALSA SoC architecture
-
-Required properties:
-- compatible
-	Should be "atmel,sama5d2-pdmic".
-- reg
-	Should contain PDMIC registers location and length.
-- interrupts
-	Should contain the IRQ line for the PDMIC.
-- dmas
-	One DMA specifiers as described in atmel-dma.txt and dma.txt files.
-- dma-names
-	Must be "rx".
-- clock-names
-	Required elements:
-	- "pclk"	peripheral clock
-	- "gclk"	generated clock
-- clocks
-	Must contain an entry for each required entry in clock-names.
-	Please refer to clock-bindings.txt.
-- atmel,mic-min-freq
-	The minimal frequency that the micphone supports.
-- atmel,mic-max-freq
-	The maximal frequency that the micphone supports.
-
-Optional properties:
-- pinctrl-names, pinctrl-0
-	Please refer to pinctrl-bindings.txt.
-- atmel,model
-	The user-visible name of this sound card.
-	The default value is "PDMIC".
-- atmel,mic-offset
-	The offset that should be added.
-	The range is from -32768 to 32767.
-	The default value is 0.
-
-Example:
-	pdmic@f8018000 {
-				compatible = "atmel,sama5d2-pdmic";
-				reg = <0xf8018000 0x124>;
-				interrupts = <48 IRQ_TYPE_LEVEL_HIGH 7>;
-				dmas = <&dma0
-					(AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1)
-					| AT91_XDMAC_DT_PERID(50))>;
-				dma-names = "rx";
-				clocks = <&pdmic_clk>, <&pdmic_gclk>;
-				clock-names = "pclk", "gclk";
-
-				pinctrl-names = "default";
-				pinctrl-0 = <&pinctrl_pdmic_default>;
-				atmel,model = "PDMIC @ sama5d2_xplained";
-				atmel,mic-min-freq = <1000000>;
-				atmel,mic-max-freq = <3246000>;
-				atmel,mic-offset = <0x0>;
-	};
diff --git a/Documentation/devicetree/bindings/sound/atmel-sam9x5-wm8731-audio.txt b/Documentation/devicetree/bindings/sound/atmel-sam9x5-wm8731-audio.txt
index 0720857089a7..8facbce53db8 100644
--- a/Documentation/devicetree/bindings/sound/atmel-sam9x5-wm8731-audio.txt
+++ b/Documentation/devicetree/bindings/sound/atmel-sam9x5-wm8731-audio.txt
@@ -16,7 +16,7 @@ Board connectors:
  * Line In Jack
 
 wm8731 pins:
-cf Documentation/devicetree/bindings/sound/wm8731.txt
+cf Documentation/devicetree/bindings/sound/wlf,wm8731.yaml
 
 Example:
 sound {
diff --git a/Documentation/devicetree/bindings/sound/designware-i2s.txt b/Documentation/devicetree/bindings/sound/designware-i2s.txt
deleted file mode 100644
index 6a536d570e29..000000000000
--- a/Documentation/devicetree/bindings/sound/designware-i2s.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-DesignWare I2S controller
-
-Required properties:
- - compatible : Must be "snps,designware-i2s"
- - reg : Must contain the I2S core's registers location and length
- - clocks : Pairs of phandle and specifier referencing the controller's
-   clocks. The controller expects one clock: the clock used as the sampling
-   rate reference clock sample.
- - clock-names : "i2sclk" for the sample rate reference clock.
- - dmas: Pairs of phandle and specifier for the DMA channels that are used by
-   the core. The core expects one or two dma channels: one for transmit and
-   one for receive.
- - dma-names : "tx" for the transmit channel, "rx" for the receive channel.
-
-Optional properties:
- - interrupts: The interrupt line number for the I2S controller. Add this
-   parameter if the I2S controller that you are using does not support DMA.
-
-For more details on the 'dma', 'dma-names', 'clock' and 'clock-names'
-properties please check:
-	* resource-names.txt
-	* clock/clock-bindings.txt
-	* dma/dma.txt
-
-Example:
-
-	soc_i2s: i2s@7ff90000 {
-		compatible = "snps,designware-i2s";
-		reg = <0x0 0x7ff90000 0x0 0x1000>;
-		clocks = <&scpi_i2sclk 0>;
-		clock-names = "i2sclk";
-		#sound-dai-cells = <0>;
-		dmas = <&dma0 5>;
-		dma-names = "tx";
-	};
diff --git a/Documentation/devicetree/bindings/sound/fsl,micfil.txt b/Documentation/devicetree/bindings/sound/fsl,micfil.txt
deleted file mode 100644
index 1ea05d4996c7..000000000000
--- a/Documentation/devicetree/bindings/sound/fsl,micfil.txt
+++ /dev/null
@@ -1,33 +0,0 @@
-NXP MICFIL Digital Audio Interface (MICFIL).
-
-The MICFIL digital interface provides a 16-bit audio signal from a PDM
-microphone bitstream in a configurable output sampling rate.
-
-Required properties:
-
-  - compatible		: Compatible list, contains "fsl,imx8mm-micfil"
-			  or "fsl,imx8mp-micfil"
-
-  - reg			: Offset and length of the register set for the device.
-
-  - interrupts		: Contains the micfil interrupts.
-
-  - clocks		: Must contain an entry for each entry in clock-names.
-
-  - clock-names		: Must include the "ipg_clk" for register access and
-			  "ipg_clk_app" for internal micfil clock.
-
-  - dmas		: Generic dma devicetree binding as described in
-			  Documentation/devicetree/bindings/dma/dma.txt.
-
-Example:
-micfil: micfil@30080000 {
-	compatible = "fsl,imx8mm-micfil";
-	reg = <0x0 0x30080000 0x0 0x10000>;
-	interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
-		     <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
-	clocks = <&clk IMX8MM_CLK_PDM_IPG>,
-		 <&clk IMX8MM_CLK_PDM_ROOT>;
-	clock-names = "ipg_clk", "ipg_clk_app";
-	dmas = <&sdma2 24 26 0x80000000>;
-};
diff --git a/Documentation/devicetree/bindings/sound/fsl,micfil.yaml b/Documentation/devicetree/bindings/sound/fsl,micfil.yaml
new file mode 100644
index 000000000000..64d57758ee67
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/fsl,micfil.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/fsl,micfil.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP MICFIL Digital Audio Interface (MICFIL)
+
+maintainers:
+  - Shengjiu Wang <shengjiu.wang@nxp.com>
+
+description: |
+  The MICFIL digital interface provides a 16-bit or 24-bit audio signal
+  from a PDM microphone bitstream in a configurable output sampling rate.
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx8mm-micfil
+      - fsl,imx8mp-micfil
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: Digital Microphone interface interrupt
+      - description: Digital Microphone interface error interrupt
+      - description: voice activity detector event interrupt
+      - description: voice activity detector error interrupt
+
+  dmas:
+    items:
+      - description: DMA controller phandle and request line for RX
+
+  dma-names:
+    items:
+      - const: rx
+
+  clocks:
+    items:
+      - description: The ipg clock for register access
+      - description: internal micfil clock
+      - description: PLL clock source for 8kHz series
+      - description: PLL clock source for 11kHz series
+      - description: External clock 3
+    minItems: 2
+
+  clock-names:
+    items:
+      - const: ipg_clk
+      - const: ipg_clk_app
+      - const: pll8k
+      - const: pll11k
+      - const: clkext3
+    minItems: 2
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - dmas
+  - dma-names
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/imx8mm-clock.h>
+    micfil: audio-controller@30080000 {
+        compatible = "fsl,imx8mm-micfil";
+        reg = <0x30080000 0x10000>;
+        interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
+                     <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk IMX8MM_CLK_PDM_IPG>,
+                 <&clk IMX8MM_CLK_PDM_ROOT>;
+        clock-names = "ipg_clk", "ipg_clk_app";
+        dmas = <&sdma2 24 25 0>;
+        dma-names = "rx";
+    };
diff --git a/Documentation/devicetree/bindings/sound/fsl,mqs.txt b/Documentation/devicetree/bindings/sound/fsl,mqs.txt
index 40353fc30255..d66284b8bef2 100644
--- a/Documentation/devicetree/bindings/sound/fsl,mqs.txt
+++ b/Documentation/devicetree/bindings/sound/fsl,mqs.txt
@@ -2,7 +2,7 @@ fsl,mqs audio CODEC
 
 Required properties:
   - compatible : Must contain one of "fsl,imx6sx-mqs", "fsl,codec-mqs"
-		"fsl,imx8qm-mqs", "fsl,imx8qxp-mqs".
+		"fsl,imx8qm-mqs", "fsl,imx8qxp-mqs", "fsl,imx93-mqs".
   - clocks : A list of phandles + clock-specifiers, one for each entry in
 	     clock-names
   - clock-names : "mclk" - must required.
diff --git a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
index f226ec13167a..1d64e8337aa4 100644
--- a/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,spdif.yaml
@@ -58,6 +58,8 @@ properties:
           slave of the Shared Peripheral Bus and when two or more bus masters
           (CPU, DMA or DSP) try to access it. This property is optional depending
           on the SoC design.
+      - description: PLL clock source for 8kHz series rate, optional.
+      - description: PLL clock source for 11khz series rate, optional.
     minItems: 9
 
   clock-names:
@@ -72,6 +74,8 @@ properties:
       - const: rxtx6
       - const: rxtx7
       - const: spba
+      - const: pll8k
+      - const: pll11k
     minItems: 9
 
   big-endian:
diff --git a/Documentation/devicetree/bindings/sound/fsl-sai.txt b/Documentation/devicetree/bindings/sound/fsl-sai.txt
index c71c5861d787..fbdefc3fade7 100644
--- a/Documentation/devicetree/bindings/sound/fsl-sai.txt
+++ b/Documentation/devicetree/bindings/sound/fsl-sai.txt
@@ -21,6 +21,9 @@ Required properties:
   - clock-names		: Must include the "bus" for register access and
 			  "mclk1", "mclk2", "mclk3" for bit clock and frame
 			  clock providing.
+                          "pll8k", "pll11k" are optional, they are the clock
+                          source for root clock, one is for 8kHz series rates
+                          another one is for 11kHz series rates.
   - dmas		: Generic dma devicetree binding as described in
 			  Documentation/devicetree/bindings/dma/dma.txt.
 
@@ -49,6 +52,14 @@ Required properties:
 			  receive data by following their own bit clocks and
 			  frame sync clocks separately.
 
+  - fsl,dataline        : configure the dataline. it has 3 value for each configuration
+                          first one means the type: I2S(1) or PDM(2)
+                          second one is dataline mask for 'rx'
+                          third one is dataline mask for 'tx'.
+                          for example: fsl,dataline = <1 0xff 0xff 2 0xff 0x11>;
+                          it means I2S type rx mask is 0xff, tx mask is 0xff, PDM type
+                          rx mask is 0xff, tx mask is 0x11 (dataline 1 and 4 enabled).
+
 Optional properties:
 
   - big-endian		: Boolean property, required if all the SAI
diff --git a/Documentation/devicetree/bindings/sound/mt6358.txt b/Documentation/devicetree/bindings/sound/mt6358.txt
index 59a73ffdf1d3..fbe9e55c68f5 100644
--- a/Documentation/devicetree/bindings/sound/mt6358.txt
+++ b/Documentation/devicetree/bindings/sound/mt6358.txt
@@ -7,7 +7,9 @@ Must be a child node of PMIC wrapper.
 
 Required properties:
 
-- compatible : "mediatek,mt6358-sound".
+- compatible - "string" - One of:
+    "mediatek,mt6358-sound"
+    "mediatek,mt6366-sound"
 - Avdd-supply : power source of AVDD
 
 Optional properties:
diff --git a/Documentation/devicetree/bindings/sound/mt8186-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mt8186-afe-pcm.yaml
new file mode 100644
index 000000000000..88f82d096443
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mt8186-afe-pcm.yaml
@@ -0,0 +1,175 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/mt8186-afe-pcm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek AFE PCM controller for mt8186
+
+maintainers:
+  - Jiaxin Yu <jiaxin.yu@mediatek.com>
+
+properties:
+  compatible:
+    const: mediatek,mt8186-sound
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    const: audiosys
+
+  mediatek,apmixedsys:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of the mediatek apmixedsys controller
+
+  mediatek,infracfg:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of the mediatek infracfg controller
+
+  mediatek,topckgen:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of the mediatek topckgen controller
+
+  clocks:
+    items:
+      - description: audio infra sys clock
+      - description: audio infra 26M clock
+      - description: audio top mux
+      - description: audio intbus mux
+      - description: mainpll 136.5M clock
+      - description: faud1 mux
+      - description: apll1 clock
+      - description: faud2 mux
+      - description: apll2 clock
+      - description: audio engen1 mux
+      - description: apll1_d8 22.5792M clock
+      - description: audio engen2 mux
+      - description: apll2_d8 24.576M clock
+      - description: i2s0 mclk mux
+      - description: i2s1 mclk mux
+      - description: i2s2 mclk mux
+      - description: i2s4 mclk mux
+      - description: tdm mclk mux
+      - description: i2s0_mck divider
+      - description: i2s1_mck divider
+      - description: i2s2_mck divider
+      - description: i2s4_mck divider
+      - description: tdm_mck divider
+      - description: audio hires mux
+      - description: 26M clock
+
+  clock-names:
+    items:
+      - const: aud_infra_clk
+      - const: mtkaif_26m_clk
+      - const: top_mux_audio
+      - const: top_mux_audio_int
+      - const: top_mainpll_d2_d4
+      - const: top_mux_aud_1
+      - const: top_apll1_ck
+      - const: top_mux_aud_2
+      - const: top_apll2_ck
+      - const: top_mux_aud_eng1
+      - const: top_apll1_d8
+      - const: top_mux_aud_eng2
+      - const: top_apll2_d8
+      - const: top_i2s0_m_sel
+      - const: top_i2s1_m_sel
+      - const: top_i2s2_m_sel
+      - const: top_i2s4_m_sel
+      - const: top_tdm_m_sel
+      - const: top_apll12_div0
+      - const: top_apll12_div1
+      - const: top_apll12_div2
+      - const: top_apll12_div4
+      - const: top_apll12_div_tdm
+      - const: top_mux_audio_h
+      - const: top_clk26m_clk
+
+required:
+  - compatible
+  - interrupts
+  - resets
+  - reset-names
+  - mediatek,apmixedsys
+  - mediatek,infracfg
+  - mediatek,topckgen
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    afe: mt8186-afe-pcm@11210000 {
+        compatible = "mediatek,mt8186-sound";
+        reg = <0x11210000 0x2000>;
+        interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
+        resets = <&watchdog 17>; //MT8186_TOPRGU_AUDIO_SW_RST
+        reset-names = "audiosys";
+        mediatek,apmixedsys = <&apmixedsys>;
+        mediatek,infracfg = <&infracfg>;
+        mediatek,topckgen = <&topckgen>;
+        clocks = <&infracfg_ao 44>, //CLK_INFRA_AO_AUDIO
+                 <&infracfg_ao 54>, //CLK_INFRA_AO_AUDIO_26M_BCLK
+                 <&topckgen 15>, //CLK_TOP_AUDIO
+                 <&topckgen 16>, //CLK_TOP_AUD_INTBUS
+                 <&topckgen 70>, //CLK_TOP_MAINPLL_D2_D4
+                 <&topckgen 17>, //CLK_TOP_AUD_1
+                 <&apmixedsys 12>, //CLK_APMIXED_APLL1
+                 <&topckgen 18>, //CLK_TOP_AUD_2
+                 <&apmixedsys 13>, //CLK_APMIXED_APLL2
+                 <&topckgen 19>, //CLK_TOP_AUD_ENGEN1
+                 <&topckgen 101>, //CLK_TOP_APLL1_D8
+                 <&topckgen 20>, //CLK_TOP_AUD_ENGEN2
+                 <&topckgen 104>, //CLK_TOP_APLL2_D8
+                 <&topckgen 63>, //CLK_TOP_APLL_I2S0_MCK_SEL
+                 <&topckgen 64>, //CLK_TOP_APLL_I2S1_MCK_SEL
+                 <&topckgen 65>, //CLK_TOP_APLL_I2S2_MCK_SEL
+                 <&topckgen 66>, //CLK_TOP_APLL_I2S4_MCK_SEL
+                 <&topckgen 67>, //CLK_TOP_APLL_TDMOUT_MCK_SEL
+                 <&topckgen 131>, //CLK_TOP_APLL12_CK_DIV0
+                 <&topckgen 132>, //CLK_TOP_APLL12_CK_DIV1
+                 <&topckgen 133>, //CLK_TOP_APLL12_CK_DIV2
+                 <&topckgen 134>, //CLK_TOP_APLL12_CK_DIV4
+                 <&topckgen 135>, //CLK_TOP_APLL12_CK_DIV_TDMOUT_M
+                 <&topckgen 44>, //CLK_TOP_AUDIO_H
+                 <&clk26m>;
+        clock-names = "aud_infra_clk",
+                      "mtkaif_26m_clk",
+                      "top_mux_audio",
+                      "top_mux_audio_int",
+                      "top_mainpll_d2_d4",
+                      "top_mux_aud_1",
+                      "top_apll1_ck",
+                      "top_mux_aud_2",
+                      "top_apll2_ck",
+                      "top_mux_aud_eng1",
+                      "top_apll1_d8",
+                      "top_mux_aud_eng2",
+                      "top_apll2_d8",
+                      "top_i2s0_m_sel",
+                      "top_i2s1_m_sel",
+                      "top_i2s2_m_sel",
+                      "top_i2s4_m_sel",
+                      "top_tdm_m_sel",
+                      "top_apll12_div0",
+                      "top_apll12_div1",
+                      "top_apll12_div2",
+                      "top_apll12_div4",
+                      "top_apll12_div_tdm",
+                      "top_mux_audio_h",
+                      "top_clk26m_clk";
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/mt8186-mt6366-da7219-max98357.yaml b/Documentation/devicetree/bindings/sound/mt8186-mt6366-da7219-max98357.yaml
new file mode 100644
index 000000000000..513cd28b2027
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mt8186-mt6366-da7219-max98357.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/mt8186-mt6366-da7219-max98357.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT8186 with MT6366, DA7219 and MAX98357 ASoC sound card driver
+
+maintainers:
+  - Jiaxin Yu <jiaxin.yu@mediatek.com>
+
+description:
+  This binding describes the MT8186 sound card.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt8186-mt6366-da7219-max98357-sound
+
+  mediatek,platform:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of MT8186 ASoC platform.
+
+  headset-codec:
+    type: object
+    additionalProperties: false
+    properties:
+      sound-dai:
+        maxItems: 1
+    required:
+      - sound-dai
+
+  playback-codecs:
+    type: object
+    additionalProperties: false
+    properties:
+      sound-dai:
+        items:
+          - description: phandle of dp codec
+          - description: phandle of l channel speaker codec
+          - description: phandle of r channel speaker codec
+        minItems: 2
+    required:
+      - sound-dai
+
+additionalProperties: false
+
+required:
+  - compatible
+  - mediatek,platform
+  - headset-codec
+  - playback-codecs
+
+examples:
+  - |
+
+    sound: mt8186-sound {
+        compatible = "mediatek,mt8186-mt6366-da7219-max98357-sound";
+        mediatek,platform = <&afe>;
+        pinctrl-names = "aud_clk_mosi_off",
+                        "aud_clk_mosi_on";
+        pinctrl-0 = <&aud_clk_mosi_off>;
+        pinctrl-1 = <&aud_clk_mosi_on>;
+
+        headset-codec {
+            sound-dai = <&da7219>;
+        };
+
+        playback-codecs {
+            sound-dai = <&anx_bridge_dp>,
+                        <&max98357a>;
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml b/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
new file mode 100644
index 000000000000..059a7629b2d3
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/mt8186-mt6366-rt1019-rt5682s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek MT8186 with MT6366, RT1019 and RT5682S ASoC sound card driver
+
+maintainers:
+  - Jiaxin Yu <jiaxin.yu@mediatek.com>
+
+description:
+  This binding describes the MT8186 sound card.
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt8186-mt6366-rt1019-rt5682s-sound
+
+  mediatek,platform:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+    description: The phandle of MT8186 ASoC platform.
+
+  headset-codec:
+    type: object
+    additionalProperties: false
+    properties:
+      sound-dai:
+        maxItems: 1
+    required:
+      - sound-dai
+
+  playback-codecs:
+    type: object
+    additionalProperties: false
+    properties:
+      sound-dai:
+        items:
+          - description: phandle of dp codec
+          - description: phandle of l channel speaker codec
+          - description: phandle of r channel speaker codec
+        minItems: 2
+    required:
+      - sound-dai
+
+additionalProperties: false
+
+required:
+  - compatible
+  - mediatek,platform
+  - headset-codec
+  - playback-codecs
+
+examples:
+  - |
+
+    sound: mt8186-sound {
+        compatible = "mediatek,mt8186-mt6366-rt1019-rt5682s-sound";
+        mediatek,platform = <&afe>;
+        pinctrl-names = "aud_clk_mosi_off",
+                        "aud_clk_mosi_on";
+        pinctrl-0 = <&aud_clk_mosi_off>;
+        pinctrl-1 = <&aud_clk_mosi_on>;
+
+        headset-codec {
+            sound-dai = <&rt5682s>;
+        };
+
+        playback-codecs {
+             sound-dai = <&it6505dptx>,
+                         <&rt1019p>;
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/nau8821.txt b/Documentation/devicetree/bindings/sound/nau8821.txt
index 6c3baf7a5f21..7c84e7c7327a 100644
--- a/Documentation/devicetree/bindings/sound/nau8821.txt
+++ b/Documentation/devicetree/bindings/sound/nau8821.txt
@@ -34,7 +34,7 @@ Optional properties:
   - nuvoton,jack-eject-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
 
   - nuvoton,dmic-clk-threshold: the ADC threshold of DMIC clock.
-
+  - nuvoton,key_enable: Headset button detection switch.
 
 Example:
 
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra210-ahub.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra210-ahub.yaml
index 6df6f858038c..47b6e712e4fb 100644
--- a/Documentation/devicetree/bindings/sound/nvidia,tegra210-ahub.yaml
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra210-ahub.yaml
@@ -110,6 +110,10 @@ patternProperties:
     type: object
     $ref: nvidia,tegra186-asrc.yaml#
 
+  '^processing-engine@[0-9a-f]+$':
+    type: object
+    $ref: nvidia,tegra210-ope.yaml#
+
 required:
   - compatible
   - reg
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra210-mbdrc.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra210-mbdrc.yaml
new file mode 100644
index 000000000000..5b9198602fc6
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra210-mbdrc.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra210-mbdrc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra210 MBDRC
+
+description:
+  The Multi Band Dynamic Range Compressor (MBDRC) is part of Output
+  Processing Engine (OPE) which interfaces with Audio Hub (AHUB) via
+  Audio Client Interface (ACIF). MBDRC can be used as a traditional
+  single full band or a dual band or a multi band dynamic processor.
+
+maintainers:
+  - Jon Hunter <jonathanh@nvidia.com>
+  - Mohan Kumar <mkumard@nvidia.com>
+  - Sameer Pujar <spujar@nvidia.com>
+
+properties:
+  compatible:
+    oneOf:
+      - const: nvidia,tegra210-mbdrc
+      - items:
+          - enum:
+              - nvidia,tegra234-mbdrc
+              - nvidia,tegra194-mbdrc
+              - nvidia,tegra186-mbdrc
+          - const: nvidia,tegra210-mbdrc
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    dynamic-range-compressor@702d8200 {
+        compatible = "nvidia,tegra210-mbdrc";
+        reg = <0x702d8200 0x200>;
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra210-ope.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra210-ope.yaml
new file mode 100644
index 000000000000..9dc9ba590fa3
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra210-ope.yaml
@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra210-ope.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra210 OPE
+
+description:
+  The Output Processing Engine (OPE) is one of the AHUB client. It has
+  PEQ (Parametric Equalizer) and MBDRC (Multi Band Dynamic Range Compressor)
+  sub blocks for data processing.
+
+maintainers:
+  - Jon Hunter <jonathanh@nvidia.com>
+  - Mohan Kumar <mkumard@nvidia.com>
+  - Sameer Pujar <spujar@nvidia.com>
+
+allOf:
+  - $ref: name-prefix.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - const: nvidia,tegra210-ope
+      - items:
+          - enum:
+              - nvidia,tegra234-ope
+              - nvidia,tegra194-ope
+              - nvidia,tegra186-ope
+          - const: nvidia,tegra210-ope
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+  sound-name-prefix:
+    pattern: "^OPE[1-9]$"
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    properties:
+      port@0:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+        description:
+          OPE ACIF (Audio Client Interface) input port. This is connected
+          to corresponding ACIF output port on AHUB (Audio Hub).
+
+      port@1:
+        $ref: audio-graph-port.yaml#
+        unevaluatedProperties: false
+        description:
+          OPE ACIF output port. This is connected to corresponding ACIF
+          input port on AHUB.
+
+patternProperties:
+  '^equalizer@[0-9a-f]+$':
+    type: object
+    $ref: nvidia,tegra210-peq.yaml#
+
+  '^dynamic-range-compressor@[0-9a-f]+$':
+    type: object
+    $ref: nvidia,tegra210-mbdrc.yaml#
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    processing-engine@702d8000 {
+        compatible = "nvidia,tegra210-ope";
+        reg = <0x702d8000 0x100>;
+        sound-name-prefix = "OPE1";
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra210-peq.yaml b/Documentation/devicetree/bindings/sound/nvidia,tegra210-peq.yaml
new file mode 100644
index 000000000000..1e373c49d639
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra210-peq.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra210-peq.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra210 PEQ
+
+description:
+  The Parametric Equalizer (PEQ) is a cascade of biquad filters with
+  each filter tuned based on certain parameters. It can be used to
+  equalize the irregularities in the speaker frequency response.
+  PEQ sits inside Output Processing Engine (OPE) which interfaces
+  with Audio Hub (AHUB) via Audio Client Interface (ACIF).
+
+maintainers:
+  - Jon Hunter <jonathanh@nvidia.com>
+  - Mohan Kumar <mkumard@nvidia.com>
+  - Sameer Pujar <spujar@nvidia.com>
+
+properties:
+  compatible:
+    oneOf:
+      - const: nvidia,tegra210-peq
+      - items:
+          - enum:
+              - nvidia,tegra234-peq
+              - nvidia,tegra194-peq
+              - nvidia,tegra186-peq
+          - const: nvidia,tegra210-peq
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    equalizer@702d8100 {
+        compatible = "nvidia,tegra210-peq";
+        reg = <0x702d8100 0x100>;
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/nxp,tfa989x.yaml b/Documentation/devicetree/bindings/sound/nxp,tfa989x.yaml
index b9b1dba40856..7f2e68ff6d34 100644
--- a/Documentation/devicetree/bindings/sound/nxp,tfa989x.yaml
+++ b/Documentation/devicetree/bindings/sound/nxp,tfa989x.yaml
@@ -15,6 +15,7 @@ allOf:
 properties:
   compatible:
     enum:
+      - nxp,tfa9890
       - nxp,tfa9895
       - nxp,tfa9897
 
diff --git a/Documentation/devicetree/bindings/sound/qcom,sdm845.txt b/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
deleted file mode 100644
index de4c604641da..000000000000
--- a/Documentation/devicetree/bindings/sound/qcom,sdm845.txt
+++ /dev/null
@@ -1,91 +0,0 @@
-* Qualcomm Technologies Inc. SDM845 ASoC sound card driver
-
-This binding describes the SDM845 sound card, which uses qdsp for audio.
-
-- compatible:
-	Usage: required
-	Value type: <stringlist>
-	Definition: must be one of this
-			"qcom,sdm845-sndcard"
-			"qcom,db845c-sndcard"
-			"lenovo,yoga-c630-sndcard"
-
-- audio-routing:
-	Usage: Optional
-	Value type: <stringlist>
-	Definition:  A list of the connections between audio components.
-		  Each entry is a pair of strings, the first being the
-		  connection's sink, the second being the connection's
-		  source. Valid names could be power supplies, MicBias
-		  of codec and the jacks on the board.
-
-- model:
-	Usage: required
-	Value type: <stringlist>
-	Definition: The user-visible name of this sound card.
-
-- aux-devs
-	Usage: optional
-	Value type: <array of phandles>
-	Definition: A list of phandles for auxiliary devices (e.g. analog
-		    amplifiers) that do not appear directly within the DAI
-		    links. Should be connected to another audio component
-		    using "audio-routing".
-
-= dailinks
-Each subnode of sndcard represents either a dailink, and subnodes of each
-dailinks would be cpu/codec/platform dais.
-
-- link-name:
-	Usage: required
-	Value type: <string>
-	Definition: User friendly name for dai link
-
-= CPU, PLATFORM, CODEC dais subnodes
-- cpu:
-	Usage: required
-	Value type: <subnode>
-	Definition: cpu dai sub-node
-
-- codec:
-	Usage: required
-	Value type: <subnode>
-	Definition: codec dai sub-node
-
-- platform:
-	Usage: Optional
-	Value type: <subnode>
-	Definition: platform dai sub-node
-
-- sound-dai:
-	Usage: required
-	Value type: <phandle>
-	Definition: dai phandle/s and port of CPU/CODEC/PLATFORM node.
-
-Example:
-
-audio {
-	compatible = "qcom,sdm845-sndcard";
-	model = "sdm845-snd-card";
-	pinctrl-names = "default", "sleep";
-	pinctrl-0 = <&pri_mi2s_active &pri_mi2s_ws_active>;
-	pinctrl-1 = <&pri_mi2s_sleep &pri_mi2s_ws_sleep>;
-
-	mm1-dai-link {
-		link-name = "MultiMedia1";
-		cpu {
-			sound-dai = <&q6asmdai MSM_FRONTEND_DAI_MULTIMEDIA1>;
-		};
-	};
-
-	pri-mi2s-dai-link {
-		link-name = "PRI MI2S Playback";
-		cpu {
-			sound-dai = <&q6afedai PRIMARY_MI2S_RX>;
-		};
-
-		platform {
-			sound-dai = <&q6routing>;
-		};
-	};
-};
diff --git a/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml b/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml
index 4ecd4080bb96..e6e27d09783e 100644
--- a/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,sm8250.yaml
@@ -16,8 +16,11 @@ description:
 properties:
   compatible:
     enum:
+      - lenovo,yoga-c630-sndcard
       - qcom,apq8016-sbc-sndcard
+      - qcom,db845c-sndcard
       - qcom,msm8916-qdsp6-sndcard
+      - qcom,sdm845-sndcard
       - qcom,sm8250-sndcard
       - qcom,qrb5165-rb5-sndcard
 
diff --git a/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml b/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml
index 9b225dbf8b79..8ca19f2b0b3d 100644
--- a/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml
+++ b/Documentation/devicetree/bindings/sound/qcom,wcd934x.yaml
@@ -127,7 +127,7 @@ properties:
 
   gpio@42:
     type: object
-    $ref: ../gpio/qcom,wcd934x-gpio.yaml#
+    $ref: /schemas/gpio/qcom,wcd934x-gpio.yaml#
 
 patternProperties:
   "^.*@[0-9a-f]+$":
diff --git a/Documentation/devicetree/bindings/sound/qcom,wsa883x.yaml b/Documentation/devicetree/bindings/sound/qcom,wsa883x.yaml
new file mode 100644
index 000000000000..6113f65f2990
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/qcom,wsa883x.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/qcom,wsa883x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for The Qualcomm WSA8830/WSA8832/WSA8835
+  smart speaker amplifier
+
+maintainers:
+  - Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
+
+description: |
+  WSA883X is the Qualcomm Aqstic smart speaker amplifier
+  Their primary operating mode uses a SoundWire digital audio
+  interface. This binding is for SoundWire interface.
+
+properties:
+  compatible:
+    const: sdw10217020200
+
+  reg:
+    maxItems: 1
+
+  powerdown-gpios:
+    description: GPIO spec for Powerdown/Shutdown line to use
+    maxItems: 1
+
+  vdd-supply:
+    description: VDD Supply for the Codec
+
+  '#thermal-sensor-cells':
+    const: 0
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - powerdown-gpios
+  - "#thermal-sensor-cells"
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    soundwire-controller@3250000 {
+        #address-cells = <2>;
+        #size-cells = <0>;
+        reg = <0x3250000 0x2000>;
+
+        speaker@0,1 {
+            compatible = "sdw10217020200";
+            reg = <0 1>;
+            powerdown-gpios = <&tlmm 1 0>;
+            vdd-supply = <&vreg_s10b_1p8>;
+            #thermal-sensor-cells = <0>;
+            #sound-dai-cells = <0>;
+        };
+
+        speaker@0,2 {
+            compatible = "sdw10217020200";
+            reg = <0 2>;
+            powerdown-gpios = <&tlmm 89 0>;
+            vdd-supply = <&vreg_s10b_1p8>;
+            #thermal-sensor-cells = <0>;
+            #sound-dai-cells = <0>;
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml b/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
index 5ea16b8ef93f..7e36e389e976 100644
--- a/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/rockchip-i2s.yaml
@@ -61,6 +61,13 @@ properties:
           - const: tx
           - const: rx
 
+  pinctrl-names:
+    oneOf:
+      - const: default
+      - items:
+          - const: bclk_on
+          - const: bclk_off
+
   power-domains:
     maxItems: 1
 
diff --git a/Documentation/devicetree/bindings/sound/sgtl5000.yaml b/Documentation/devicetree/bindings/sound/sgtl5000.yaml
index e762c320b574..2bc7f00ce4a2 100644
--- a/Documentation/devicetree/bindings/sound/sgtl5000.yaml
+++ b/Documentation/devicetree/bindings/sound/sgtl5000.yaml
@@ -47,6 +47,7 @@ properties:
     description: The bias voltage to be used in mVolts. The voltage can take
       values from 1.25V to 3V by 250mV steps. If this node is not mentioned
       or the value is unknown, then the value is set to 1.25V.
+    $ref: "/schemas/types.yaml#/definitions/uint32"
     enum: [ 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000 ]
 
   lrclk-strength:
diff --git a/Documentation/devicetree/bindings/sound/snps,designware-i2s.yaml b/Documentation/devicetree/bindings/sound/snps,designware-i2s.yaml
new file mode 100644
index 000000000000..4b0795819064
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/snps,designware-i2s.yaml
@@ -0,0 +1,94 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/snps,designware-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DesignWare I2S controller
+
+maintainers:
+  - Jose Abreu <joabreu@synopsys.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: canaan,k210-i2s
+          - const: snps,designware-i2s
+      - enum:
+          - snps,designware-i2s
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    description: |
+      The interrupt line number for the I2S controller. Add this
+      parameter if the I2S controller that you are using does not
+      support DMA.
+    maxItems: 1
+
+  clocks:
+    description: Sampling rate reference clock
+    maxItems: 1
+
+  clock-names:
+    const: i2sclk
+
+  resets:
+    maxItems: 1
+
+  dmas:
+    items:
+      - description: TX DMA Channel
+      - description: RX DMA Channel
+    minItems: 1
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+    minItems: 1
+
+if:
+  properties:
+    compatible:
+      contains:
+        const: canaan,k210-i2s
+
+then:
+  properties:
+    "#sound-dai-cells":
+      const: 1
+
+else:
+  properties:
+    "#sound-dai-cells":
+      const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+oneOf:
+  - required:
+      - dmas
+      - dma-names
+  - required:
+      - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    soc_i2s: i2s@7ff90000 {
+      compatible = "snps,designware-i2s";
+      reg = <0x7ff90000 0x1000>;
+      clocks = <&scpi_i2sclk 0>;
+      clock-names = "i2sclk";
+      #sound-dai-cells = <0>;
+      dmas = <&dma0 5>;
+      dma-names = "tx";
+    };
diff --git a/Documentation/devicetree/bindings/sound/wlf,wm8731.yaml b/Documentation/devicetree/bindings/sound/wlf,wm8731.yaml
index e7220e8b49f0..15795f63b5a3 100644
--- a/Documentation/devicetree/bindings/sound/wlf,wm8731.yaml
+++ b/Documentation/devicetree/bindings/sound/wlf,wm8731.yaml
@@ -52,10 +52,6 @@ properties:
   DCVDD-supply:
     description: Digital core supply regulator for the DCVDD pin.
 
-  spi-max-frequency: true
-
-additionalProperties: false
-
 required:
   - reg
   - compatible
@@ -64,6 +60,11 @@ required:
   - DBVDD-supply
   - DCVDD-supply
 
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
 examples:
   - |
     spi {
diff --git a/Documentation/process/kernel-docs.rst b/Documentation/process/kernel-docs.rst
index 502289d63385..306ad373a002 100644
--- a/Documentation/process/kernel-docs.rst
+++ b/Documentation/process/kernel-docs.rst
@@ -116,7 +116,7 @@ On-line docs
     * Title: **Writing an ALSA Driver**
 
       :Author: Takashi Iwai <tiwai@suse.de>
-      :URL: http://www.alsa-project.org/~iwai/writing-an-alsa-driver/index.html
+      :URL: https://www.kernel.org/doc/html/latest/sound/kernel-api/writing-an-alsa-driver.html
       :Date: 2005
       :Keywords: ALSA, sound, soundcard, driver, lowlevel, hardware.
       :Description: Advanced Linux Sound Architecture for developers,
diff --git a/Documentation/sound/soc/codec.rst b/Documentation/sound/soc/codec.rst
index 57df149acafc..af973c4cac93 100644
--- a/Documentation/sound/soc/codec.rst
+++ b/Documentation/sound/soc/codec.rst
@@ -132,7 +132,7 @@ The codec driver also supports the following ALSA PCM operations:-
   };
 
 Please refer to the ALSA driver PCM documentation for details.
-http://www.alsa-project.org/~iwai/writing-an-alsa-driver/
+https://www.kernel.org/doc/html/latest/sound/kernel-api/writing-an-alsa-driver.html
 
 
 DAPM description
diff --git a/Documentation/sound/soc/platform.rst b/Documentation/sound/soc/platform.rst
index c1badea53d3d..7036630eaf01 100644
--- a/Documentation/sound/soc/platform.rst
+++ b/Documentation/sound/soc/platform.rst
@@ -46,7 +46,7 @@ snd_soc_component_driver:-
   };
 
 Please refer to the ALSA driver documentation for details of audio DMA.
-http://www.alsa-project.org/~iwai/writing-an-alsa-driver/
+https://www.kernel.org/doc/html/latest/sound/kernel-api/writing-an-alsa-driver.html
 
 An example DMA driver is soc/pxa/pxa2xx-pcm.c