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+CS35L35 Boosted Speaker Amplifier
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+
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+Required properties:
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+
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+ - compatible : "cirrus,cs35l35"
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+
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+ - reg : the I2C address of the device for I2C
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+
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+ - VA-supply, VP-supply : power supplies for the device,
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+ as covered in
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+ Documentation/devicetree/bindings/regulator/regulator.txt.
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+
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+ - interrupt-parent : Specifies the phandle of the interrupt controller to
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+ which the IRQs from CS35L35 are delivered to.
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+ - interrupts : IRQ line info CS35L35.
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+ (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
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+ for further information relating to interrupt properties)
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+
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+Optional properties:
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+ - reset-gpios : gpio used to reset the amplifier
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+
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+ - cirrus,stereo-config : Boolean to determine if there are 2 AMPs for a
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+ Stereo configuration
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+
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+ - cirrus,audio-channel : Set Location of Audio Signal on Serial Port
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+ 0 = Data Packet received on Left I2S Channel
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+ 1 = Data Packet received on Right I2S Channel
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+
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+ - cirrus,advisory-channel : Set Location of Advisory Signal on Serial Port
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+ 0 = Data Packet received on Left I2S Channel
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+ 1 = Data Packet received on Right I2S Channel
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+
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+ - cirrus,shared-boost : Boolean to enable ClassH tracking of Advisory Signal
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+ if 2 Devices share Boost BST_CTL
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+
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+ - cirrus,external-boost : Boolean to specify the device is using an external
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+ boost supply, note that sharing a boost from another cs35l35 would constitute
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+ using an external supply for the slave device
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+
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+ - cirrus,sp-drv-strength : Value for setting the Serial Port drive strength
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+ Table 3-10 of the datasheet lists drive-strength specifications
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+ 0 = 1x (Default)
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+ 1 = .5x
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+ - cirrus,sp-drv-unused : Determines how unused slots should be driven on the
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+ Serial Port.
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+ 0 - Hi-Z
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+ 2 - Drive 0's (Default)
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+ 3 - Drive 1's
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+
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+ - cirrus,bst-pdn-fet-on : Boolean to determine if the Boost PDN control
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+ powers down with a rectification FET On or Off. If VSPK is supplied
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+ externally then FET is off.
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+
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+ - cirrus,boost-ctl-millivolt : Boost Voltage Value. Configures the boost
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+ converter's output voltage in mV. The range is from 2600mV to 9000mV with
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+ increments of 100mV.
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+ (Default) VP
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+
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+ - cirrus,boost-peak-milliamp : Boost-converter peak current limit in mA.
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+ Configures the peak current by monitoring the current through the boost FET.
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+ Range starts at 1680mA and goes to a maximum of 4480mA with increments of
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+ 110mA.
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+ (Default) 2.46 Amps
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+
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+ - cirrus,amp-gain-zc : Boolean to determine if to use Amplifier gain-change
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+ zero-cross
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+
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+Optional H/G Algorithm sub-node:
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+
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+ The cs35l35 node can have a single "cirrus,classh-internal-algo" sub-node
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+ that will disable automatic control of the internal H/G Algorithm.
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+
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+ It is strongly recommended that the Datasheet be referenced when adjusting
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+ or using these Class H Algorithm controls over the internal Algorithm.
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+ Serious damage can occur to the Device and surrounding components.
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+
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+ - cirrus,classh-internal-algo : Sub-node for the Internal Class H Algorithm
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+ See Section 4.3 Internal Class H Algorithm in the Datasheet.
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+ If not used, the device manages the ClassH Algorithm internally.
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+
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+Optional properties for the "cirrus,classh-internal-algo" Sub-node
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+
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+ Section 7.29 Class H Control
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+ - cirrus,classh-bst-overide : Boolean
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+ - cirrus,classh-bst-max-limit
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+ - cirrus,classh-mem-depth
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+
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+ Section 7.30 Class H Headroom Control
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+ - cirrus,classh-headroom
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+
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+ Section 7.31 Class H Release Rate
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+ - cirrus,classh-release-rate
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+
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+ Section 7.32 Class H Weak FET Drive Control
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+ - cirrus,classh-wk-fet-disable
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+ - cirrus,classh-wk-fet-delay
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+ - cirrus,classh-wk-fet-thld
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+
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+ Section 7.34 Class H VP Control
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+ - cirrus,classh-vpch-auto
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+ - cirrus,classh-vpch-rate
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+ - cirrus,classh-vpch-man
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+
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+Optional Monitor Signal Format sub-node:
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+
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+ The cs35l35 node can have a single "cirrus,monitor-signal-format" sub-node
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+ for adjusting the Depth, Location and Frame of the Monitoring Signals
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+ for Algorithms.
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+
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+ See Sections 4.8.2 through 4.8.4 Serial-Port Control in the Datasheet
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+
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+ -cirrus,monitor-signal-format : Sub-node for the Monitor Signaling Formating
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+ on the I2S Port. Each of the 3 8 bit values in the array contain the settings
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+ for depth, location, and frame.
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+
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+ If not used, the defaults for the 6 monitor signals is used.
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+
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+ Sections 7.44 - 7.53 lists values for the depth, location, and frame
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+ for each monitoring signal.
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+
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+ - cirrus,imon : 4 8 bit values to set the depth, location, frame and ADC
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+ scale of the IMON monitor signal.
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+
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+ - cirrus,vmon : 3 8 bit values to set the depth, location, and frame
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+ of the VMON monitor signal.
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+
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+ - cirrus,vpmon : 3 8 bit values to set the depth, location, and frame
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+ of the VPMON monitor signal.
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+
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+ - cirrus,vbstmon : 3 8 bit values to set the depth, location, and frame
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+ of the VBSTMON monitor signal
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+
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+ - cirrus,vpbrstat : 3 8 bit values to set the depth, location, and frame
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+ of the VPBRSTAT monitor signal
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+
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+ - cirrus,zerofill : 3 8 bit values to set the depth, location, and frame\
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+ of the ZEROFILL packet in the monitor signal
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+
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+Example:
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+
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+cs35l35: cs35l35@20 {
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+ compatible = "cirrus,cs35l35";
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+ reg = <0x20>;
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+ VA-supply = <&dummy_vreg>;
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+ VP-supply = <&dummy_vreg>;
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+ reset-gpios = <&axi_gpio 54 0>;
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+ interrupt-parent = <&gpio8>;
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+ interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
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+ cirrus,boost-ctl-millivolt = <9000>;
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+
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+ cirrus,stereo-config;
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+ cirrus,audio-channel = <0x00>;
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+ cirrus,advisory-channel = <0x01>;
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+ cirrus,shared-boost;
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+
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+ cirrus,classh-internal-algo {
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+ cirrus,classh-bst-overide;
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+ cirrus,classh-bst-max-limit = <0x01>;
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+ cirrus,classh-mem-depth = <0x01>;
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+ cirrus,classh-release-rate = <0x08>;
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+ cirrus,classh-headroom-millivolt = <0x0B>;
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+ cirrus,classh-wk-fet-disable = <0x01>;
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+ cirrus,classh-wk-fet-delay = <0x04>;
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+ cirrus,classh-wk-fet-thld = <0x01>;
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+ cirrus,classh-vpch-auto = <0x01>;
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+ cirrus,classh-vpch-rate = <0x02>;
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+ cirrus,classh-vpch-man = <0x05>;
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+ };
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+
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+ /* Depth, Location, Frame */
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+ cirrus,monitor-signal-format {
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+ cirrus,imon = /bits/ 8 <0x03 0x00 0x01>;
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+ cirrus,vmon = /bits/ 8 <0x03 0x00 0x00>;
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+ cirrus,vpmon = /bits/ 8 <0x03 0x04 0x00>;
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+ cirrus,vbstmon = /bits/ 8 <0x03 0x04 0x01>;
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+ cirrus,vpbrstat = /bits/ 8 <0x00 0x04 0x00>;
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+ cirrus,zerofill = /bits/ 8 <0x00 0x00 0x00>;
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+ };
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+
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+};
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