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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 08:51:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 08:51:59 -0800
commita323ae93a74f669d890926187c68c711895e3454 (patch)
tree9a4ab8ed7bb98dc4321606332a883834ef7c8f6f /Documentation
parent3e63430a5cc26bc90a6e33ab33f901196b7b63ac (diff)
parent0e806151e86be52caa1349fa490eab8f09a2b6f5 (diff)
Merge tag 'sound-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai: "In this batch, you can find lots of cleanups through the whole subsystem, as our good New Year's resolution. Lots of LOCs and commits are about LINE6 driver that was promoted finally from staging tree, and as usual, there've been widely spread ASoC changes. Here some highlights: ALSA core changes - Embedding struct device into ALSA core structures - sequencer core cleanups / fixes - PCM msbits constraints cleanups / fixes - New SNDRV_PCM_TRIGGER_DRAIN command - PCM kerneldoc fixes, header cleanups - PCM code cleanups using more standard codes - Control notification ID fixes Driver cleanups - Cleanups of PCI PM callbacks - Timer helper usages cleanups - Simplification (e.g. argument reduction) of many driver codes HD-audio - Hotkey and LED support on HP laptops with Realtek codecs - Dock station support on HP laptops - Toshiba Satellite S50D fixup - Enhanced wallclock timestamp handling for HD-audio - Componentization to simplify the linkage between i915 and hd-audio drivers for Intel HDMI/DP USB-audio - Akai MPC Element support - Enhanced timestamp handling ASoC - Lots of refactoringin ASoC core, moving drivers to more data driven initialization and rationalizing a lot of DAPM usage - Much improved handling of CDCLK clocks on Samsung I2S controllers - Lots of driver specific cleanups and feature improvements - CODEC support for TI PCM514x and TLV320AIC3104 devices - Board support for Tegra systems with Realtek RT5677 - New driver for Maxim max98357a - More enhancements / fixes for Intel SST driver Others - Promotion of LINE6 driver from staging along with lots of rewrites and cleanups - DT support for old non-ASoC atmel driver - oxygen cleanups, XIO2001 init, Studio Evolution SE6x support - Emu8000 DRAM size detection fix on ISA(!!) AWE64 boards - A few more ak411x fixes for ice1724 boards" * tag 'sound-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (542 commits) ALSA: line6: toneport: Use explicit type for firmware version ALSA: line6: Use explicit type for serial number ALSA: line6: Return EIO if read/write not successful ALSA: line6: Return error if device not responding ALSA: line6: Add delay before reading status ASoC: Intel: Clean data after SST fw fetch ALSA: hda - Add docking station support for another HP machine ALSA: control: fix failure to return new numerical ID in 'replace' event data ALSA: usb: update trigger timestamp on first non-zero URB submitted ALSA: hda: read trigger_timestamp immediately after starting DMA ALSA: pcm: allow for trigger_tstamp snapshot in .trigger ALSA: pcm: don't override timestamp unconditionally ALSA: off by one bug in snd_riptide_joystick_probe() ASoC: rt5670: Set use_single_rw flag for regmap ASoC: rt286: Add rt288 codec support ASoC: max98357a: Fix build in !CONFIG_OF case ASoC: Intel: fix platform_no_drv_owner.cocci warnings ARM: dts: Switch Odroid X2/U2 to simple-audio-card ARM: dts: Exynos4 and Odroid X2/U3 sound device nodes update ALSA: control: fix failure to return numerical ID in 'add' event ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/sound/cdns,xtfpga-i2s.txt18
-rw-r--r--Documentation/devicetree/bindings/sound/designware-i2s.txt31
-rw-r--r--Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt23
-rw-r--r--Documentation/devicetree/bindings/sound/max98357a.txt14
-rw-r--r--Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt67
-rw-r--r--Documentation/devicetree/bindings/sound/pcm512x.txt28
-rw-r--r--Documentation/devicetree/bindings/sound/samsung-i2s.txt22
-rw-r--r--Documentation/devicetree/bindings/sound/simple-card.txt5
-rw-r--r--Documentation/devicetree/bindings/sound/st,sta32x.txt92
-rw-r--r--Documentation/devicetree/bindings/sound/tlv320aic3x.txt10
-rw-r--r--Documentation/devicetree/bindings/sound/ts3a227e.txt5
-rw-r--r--Documentation/devicetree/bindings/sound/wm8904.txt2
12 files changed, 312 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/sound/cdns,xtfpga-i2s.txt b/Documentation/devicetree/bindings/sound/cdns,xtfpga-i2s.txt
new file mode 100644
index 000000000000..befd125d18bb
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/cdns,xtfpga-i2s.txt
@@ -0,0 +1,18 @@
+Bindings for I2S controller built into xtfpga Xtensa bitstreams.
+
+Required properties:
+- compatible: shall be "cdns,xtfpga-i2s".
+- reg: memory region (address and length) with device registers.
+- interrupts: interrupt for the device.
+- clocks: phandle to the clk used as master clock. I2S bus clock
+ is derived from it.
+
+Examples:
+
+ i2s0: xtfpga-i2s@0d080000 {
+ #sound-dai-cells = <0>;
+ compatible = "cdns,xtfpga-i2s";
+ reg = <0x0d080000 0x40>;
+ interrupts = <2 1>;
+ clocks = <&cdce706 4>;
+ };
diff --git a/Documentation/devicetree/bindings/sound/designware-i2s.txt b/Documentation/devicetree/bindings/sound/designware-i2s.txt
new file mode 100644
index 000000000000..7bb54247f8e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/designware-i2s.txt
@@ -0,0 +1,31 @@
+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.
+
+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/ingenic,jz4740-i2s.txt b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
new file mode 100644
index 000000000000..b41433386e2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ingenic,jz4740-i2s.txt
@@ -0,0 +1,23 @@
+Ingenic JZ4740 I2S controller
+
+Required properties:
+- compatible : "ingenic,jz4740-i2s"
+- reg : I2S registers location and length
+- clocks : AIC and I2S PLL clock specifiers.
+- clock-names: "aic" and "i2s"
+- dmas: DMA controller phandle and DMA request line for I2S Tx and Rx channels
+- dma-names: Must be "tx" and "rx"
+
+Example:
+
+i2s: i2s@10020000 {
+ compatible = "ingenic,jz4740-i2s";
+ reg = <0x10020000 0x94>;
+
+ clocks = <&cgu JZ4740_CLK_AIC>, <&cgu JZ4740_CLK_I2SPLL>;
+ clock-names = "aic", "i2s";
+
+ dmas = <&dma 2>, <&dma 3>;
+ dma-names = "tx", "rx";
+
+};
diff --git a/Documentation/devicetree/bindings/sound/max98357a.txt b/Documentation/devicetree/bindings/sound/max98357a.txt
new file mode 100644
index 000000000000..a7a149a236e5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/max98357a.txt
@@ -0,0 +1,14 @@
+Maxim MAX98357A audio DAC
+
+This node models the Maxim MAX98357A DAC.
+
+Required properties:
+- compatible : "maxim,max98357a"
+- sdmode-gpios : GPIO specifier for the GPIO -> DAC SDMODE pin
+
+Example:
+
+max98357a {
+ compatible = "maxim,max98357a";
+ sdmode-gpios = <&qcom_pinmux 25 0>;
+};
diff --git a/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt
new file mode 100644
index 000000000000..a4589cda214e
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/nvidia,tegra-audio-rt5677.txt
@@ -0,0 +1,67 @@
+NVIDIA Tegra audio complex, with RT5677 CODEC
+
+Required properties:
+- compatible : "nvidia,tegra-audio-rt5677"
+- clocks : Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entries:
+ - pll_a
+ - pll_a_out0
+ - mclk (The Tegra cdev1/extern1 clock, which feeds the CODEC's mclk)
+- nvidia,model : The user-visible name of this sound complex.
+- nvidia,audio-routing : 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 for sources and
+ sinks are the RT5677's pins (as documented in its binding), and the jacks
+ on the board:
+
+ * Headphone
+ * Speaker
+ * Headset Mic
+ * Internal Mic 1
+ * Internal Mic 2
+
+- nvidia,i2s-controller : The phandle of the Tegra I2S controller that's
+ connected to the CODEC.
+- nvidia,audio-codec : The phandle of the RT5677 audio codec. This binding
+ assumes that AIF1 on the CODEC is connected to Tegra.
+
+Optional properties:
+- nvidia,hp-det-gpios : The GPIO that detects headphones are plugged in
+- nvidia,hp-en-gpios : The GPIO that enables headphone amplifier
+- nvidia,mic-present-gpios: The GPIO that mic jack is plugged in
+- nvidia,dmic-clk-en-gpios : The GPIO that gates DMIC clock signal
+
+Example:
+
+sound {
+ compatible = "nvidia,tegra-audio-rt5677-ryu",
+ "nvidia,tegra-audio-rt5677";
+ nvidia,model = "NVIDIA Tegra Ryu";
+
+ nvidia,audio-routing =
+ "Headphone", "LOUT2",
+ "Headphone", "LOUT1",
+ "Headset Mic", "MICBIAS1",
+ "IN1P", "Headset Mic",
+ "IN1N", "Headset Mic",
+ "DMIC L1", "Internal Mic 1",
+ "DMIC R1", "Internal Mic 1",
+ "DMIC L2", "Internal Mic 2",
+ "DMIC R2", "Internal Mic 2",
+ "Speaker", "PDM1L",
+ "Speaker", "PDM1R";
+
+ nvidia,i2s-controller = <&tegra_i2s1>;
+ nvidia,audio-codec = <&rt5677>;
+
+ nvidia,hp-det-gpios = <&gpio TEGRA_GPIO(R, 7) GPIO_ACTIVE_HIGH>;
+ nvidia,mic-present-gpios = <&gpio TEGRA_GPIO(O, 5) GPIO_ACTIVE_LOW>;
+ nvidia,hp-en-gpios = <&rt5677 1 GPIO_ACTIVE_HIGH>;
+ nvidia,dmic-clk-en-gpios = <&rt5677 2 GPIO_ACTIVE_HIGH>;
+
+ clocks = <&tegra_car TEGRA124_CLK_PLL_A>,
+ <&tegra_car TEGRA124_CLK_PLL_A_OUT0>,
+ <&tegra_car TEGRA124_CLK_EXTERN1>;
+ clock-names = "pll_a", "pll_a_out0", "mclk";
+};
diff --git a/Documentation/devicetree/bindings/sound/pcm512x.txt b/Documentation/devicetree/bindings/sound/pcm512x.txt
index faff75e64573..3aae3b41bd8e 100644
--- a/Documentation/devicetree/bindings/sound/pcm512x.txt
+++ b/Documentation/devicetree/bindings/sound/pcm512x.txt
@@ -5,7 +5,8 @@ on the board).
Required properties:
- - compatible : One of "ti,pcm5121" or "ti,pcm5122"
+ - compatible : One of "ti,pcm5121", "ti,pcm5122", "ti,pcm5141" or
+ "ti,pcm5142"
- reg : the I2C address of the device for I2C, the chip select
number for SPI.
@@ -16,9 +17,16 @@ Required properties:
Optional properties:
- clocks : A clock specifier for the clock connected as SCLK. If this
- is absent the device will be configured to clock from BCLK.
+ is absent the device will be configured to clock from BCLK. If pll-in
+ and pll-out are specified in addition to a clock, the device is
+ configured to accept clock input on a specified gpio pin.
-Example:
+ - pll-in, pll-out : gpio pins used to connect the pll using <1>
+ through <6>. The device will be configured for clock input on the
+ given pll-in pin and PLL output on the given pll-out pin. An
+ external connection from the pll-out pin to the SCLK pin is assumed.
+
+Examples:
pcm5122: pcm5122@4c {
compatible = "ti,pcm5122";
@@ -28,3 +36,17 @@ Example:
DVDD-supply = <&reg_1v8>;
CPVDD-supply = <&reg_3v3>;
};
+
+
+ pcm5142: pcm5142@4c {
+ compatible = "ti,pcm5142";
+ reg = <0x4c>;
+
+ AVDD-supply = <&reg_3v3_analog>;
+ DVDD-supply = <&reg_1v8>;
+ CPVDD-supply = <&reg_3v3>;
+
+ clocks = <&sck>;
+ pll-in = <3>;
+ pll-out = <6>;
+ };
diff --git a/Documentation/devicetree/bindings/sound/samsung-i2s.txt b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
index d188296bb6ec..09e0e18591ae 100644
--- a/Documentation/devicetree/bindings/sound/samsung-i2s.txt
+++ b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
@@ -33,6 +33,25 @@ Required SoC Specific Properties:
"iis" is the i2s bus clock and i2s_opclk0, i2s_opclk1 are sources of the root
clk. i2s0 has internal mux to select the source of root clk and i2s1 and i2s2
doesn't have any such mux.
+- #clock-cells: should be 1, this property must be present if the I2S device
+ is a clock provider in terms of the common clock bindings, described in
+ ../clock/clock-bindings.txt.
+- clock-output-names: from the common clock bindings, names of the CDCLK
+ I2S output clocks, suggested values are "i2s_cdclk0", "i2s_cdclk1",
+ "i2s_cdclk3" for the I2S0, I2S1, I2S2 devices recpectively.
+
+There are following clocks available at the I2S device nodes:
+ CLK_I2S_CDCLK - the CDCLK (CODECLKO) gate clock,
+ CLK_I2S_RCLK_PSR - the RCLK prescaler divider clock (corresponding to the
+ IISPSR register),
+ CLK_I2S_RCLK_SRC - the RCLKSRC mux clock (corresponding to RCLKSRC bit in
+ IISMOD register).
+
+Refer to the SoC datasheet for availability of the above clocks.
+The CLK_I2S_RCLK_PSR and CLK_I2S_RCLK_SRC clocks are usually only available
+in the IIS Multi Audio Interface (I2S0).
+Note: Old DTs may not have the #clock-cells, clock-output-names properties
+and then not use the I2S node as a clock supplier.
Optional SoC Specific Properties:
@@ -41,6 +60,7 @@ Optional SoC Specific Properties:
- pinctrl-0: Should specify pin control groups used for this controller.
- pinctrl-names: Should contain only one value - "default".
+
Example:
i2s0: i2s@03830000 {
@@ -54,6 +74,8 @@ i2s0: i2s@03830000 {
<&clock_audss EXYNOS_I2S_BUS>,
<&clock_audss EXYNOS_SCLK_I2S>;
clock-names = "iis", "i2s_opclk0", "i2s_opclk1";
+ #clock-cells;
+ clock-output-names = "i2s_cdclk0";
samsung,idma-addr = <0x03000000>;
pinctrl-names = "default";
pinctrl-0 = <&i2s0_bus>;
diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt
index c3cba600bf11..73bf314f7240 100644
--- a/Documentation/devicetree/bindings/sound/simple-card.txt
+++ b/Documentation/devicetree/bindings/sound/simple-card.txt
@@ -75,6 +75,11 @@ Optional CPU/CODEC subnodes properties:
it can be specified via "clocks" if system has
clock node (= common clock), or "system-clock-frequency"
(if system doens't support common clock)
+ If a clock is specified, it is
+ enabled with clk_prepare_enable()
+ in dai startup() and disabled with
+ clk_disable_unprepare() in dai
+ shutdown().
Example 1 - single DAI link:
diff --git a/Documentation/devicetree/bindings/sound/st,sta32x.txt b/Documentation/devicetree/bindings/sound/st,sta32x.txt
new file mode 100644
index 000000000000..255de3ae5b2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/st,sta32x.txt
@@ -0,0 +1,92 @@
+STA32X audio CODEC
+
+The driver for this device only supports I2C.
+
+Required properties:
+
+ - compatible: "st,sta32x"
+ - reg: the I2C address of the device for I2C
+ - reset-gpios: a GPIO spec for the reset pin. If specified, it will be
+ deasserted before communication to the codec starts.
+
+ - power-down-gpios: a GPIO spec for the power down pin. If specified,
+ it will be deasserted before communication to the codec
+ starts.
+
+ - Vdda-supply: regulator spec, providing 3.3V
+ - Vdd3-supply: regulator spec, providing 3.3V
+ - Vcc-supply: regulator spec, providing 5V - 26V
+
+Optional properties:
+
+ - st,output-conf: number, Selects the output configuration:
+ 0: 2-channel (full-bridge) power, 2-channel data-out
+ 1: 2 (half-bridge). 1 (full-bridge) on-board power
+ 2: 2 Channel (Full-Bridge) Power, 1 Channel FFX
+ 3: 1 Channel Mono-Parallel
+ If parameter is missing, mode 0 will be enabled.
+ This property has to be specified as '/bits/ 8' value.
+
+ - st,ch1-output-mapping: Channel 1 output mapping
+ - st,ch2-output-mapping: Channel 2 output mapping
+ - st,ch3-output-mapping: Channel 3 output mapping
+ 0: Channel 1
+ 1: Channel 2
+ 2: Channel 3
+ If parameter is missing, channel 1 is chosen.
+ This properties have to be specified as '/bits/ 8' values.
+
+ - st,thermal-warning-recover:
+ If present, thermal warning recovery is enabled.
+
+ - st,thermal-warning-adjustment:
+ If present, thermal warning adjustment is enabled.
+
+ - st,fault-detect-recovery:
+ If present, then fault recovery will be enabled.
+
+ - st,drop-compensation-ns: number
+ Only required for "st,ffx-power-output-mode" ==
+ "variable-drop-compensation".
+ Specifies the drop compensation in nanoseconds.
+ The value must be in the range of 0..300, and only
+ multiples of 20 are allowed. Default is 140ns.
+
+ - st,max-power-use-mpcc:
+ If present, then MPCC bits are used for MPC coefficients,
+ otherwise standard MPC coefficients are used.
+
+ - st,max-power-corr:
+ If present, power bridge correction for THD reduction near maximum
+ power output is enabled.
+
+ - st,am-reduction-mode:
+ If present, FFX mode runs in AM reduction mode, otherwise normal
+ FFX mode is used.
+
+ - st,odd-pwm-speed-mode:
+ If present, PWM speed mode run on odd speed mode (341.3 kHz) on all
+ channels. If not present, normal PWM spped mode (384 kHz) will be used.
+
+ - st,invalid-input-detect-mute:
+ If present, automatic invalid input detect mute is enabled.
+
+Example:
+
+codec: sta32x@38 {
+ compatible = "st,sta32x";
+ reg = <0x1c>;
+ reset-gpios = <&gpio1 19 0>;
+ power-down-gpios = <&gpio1 16 0>;
+ st,output-conf = /bits/ 8 <0x3>; // set output to 2-channel
+ // (full-bridge) power,
+ // 2-channel data-out
+ st,ch1-output-mapping = /bits/ 8 <0>; // set channel 1 output ch 1
+ st,ch2-output-mapping = /bits/ 8 <0>; // set channel 2 output ch 1
+ st,ch3-output-mapping = /bits/ 8 <0>; // set channel 3 output ch 1
+ st,max-power-correction; // enables power bridge
+ // correction for THD reduction
+ // near maximum power output
+ st,invalid-input-detect-mute; // mute if no valid digital
+ // audio signal is provided.
+};
diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
index 5e6040c2c2e9..47a213c411ce 100644
--- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
+++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
@@ -9,6 +9,7 @@ Required properties:
"ti,tlv320aic33" - TLV320AIC33
"ti,tlv320aic3007" - TLV320AIC3007
"ti,tlv320aic3106" - TLV320AIC3106
+ "ti,tlv320aic3104" - TLV320AIC3104
- reg - <int> - I2C slave address
@@ -18,6 +19,7 @@ Optional properties:
- gpio-reset - gpio pin number used for codec reset
- ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
+ - Not supported on tlv320aic3104
- ai3x-micbias-vg - MicBias Voltage required.
1 - MICBIAS output is powered to 2.0V,
2 - MICBIAS output is powered to 2.5V,
@@ -36,7 +38,13 @@ CODEC output pins:
* HPLCOM
* HPRCOM
-CODEC input pins:
+CODEC input pins for TLV320AIC3104:
+ * MIC2L
+ * MIC2R
+ * LINE1L
+ * LINE1R
+
+CODEC input pins for other compatible codecs:
* MIC3L
* MIC3R
* LINE1L
diff --git a/Documentation/devicetree/bindings/sound/ts3a227e.txt b/Documentation/devicetree/bindings/sound/ts3a227e.txt
index e8bf23eb1803..a836881d9608 100644
--- a/Documentation/devicetree/bindings/sound/ts3a227e.txt
+++ b/Documentation/devicetree/bindings/sound/ts3a227e.txt
@@ -13,6 +13,11 @@ Required properties:
- interrupt-parent: The parent interrupt controller
- interrupts: Interrupt number for /INT pin from the 227e
+Optional properies:
+ - ti,micbias: Intended MICBIAS voltage (datasheet section 9.6.7).
+ Select 0/1/2/3/4/5/6/7 to specify MACBIAS voltage
+ 2.1V/2.2V/2.3V/2.4V/2.5V/2.6V/2.7V/2.8V
+ Default value is "1" (2.2V).
Examples:
diff --git a/Documentation/devicetree/bindings/sound/wm8904.txt b/Documentation/devicetree/bindings/sound/wm8904.txt
index e99f4097c83c..66bf261423b9 100644
--- a/Documentation/devicetree/bindings/sound/wm8904.txt
+++ b/Documentation/devicetree/bindings/sound/wm8904.txt
@@ -3,7 +3,7 @@ WM8904 audio CODEC
This device supports I2C only.
Required properties:
- - compatible: "wlf,wm8904"
+ - compatible: "wlf,wm8904" or "wlf,wm8912"
- reg: the I2C address of the device.
- clock-names: "mclk"
- clocks: reference to