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1CS35L35 Boosted Speaker Amplifier2 3Required properties:4 5 - compatible : "cirrus,cs35l35"6 7 - reg : the I2C address of the device for I2C8 9 - VA-supply, VP-supply : power supplies for the device,10 as covered in11 Documentation/devicetree/bindings/regulator/regulator.txt.12 13 - interrupts : IRQ line info CS35L35.14 (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt15 for further information relating to interrupt properties)16 17 - cirrus,boost-ind-nanohenry: Inductor value for boost converter. The value is18 in nH and they can be values of 1000nH, 1200nH, 1500nH, and 2200nH.19 20Optional properties:21 - reset-gpios : gpio used to reset the amplifier22 23 - cirrus,stereo-config : Boolean to determine if there are 2 AMPs for a24 Stereo configuration25 26 - cirrus,audio-channel : Set Location of Audio Signal on Serial Port27 0 = Data Packet received on Left I2S Channel28 1 = Data Packet received on Right I2S Channel29 30 - cirrus,advisory-channel : Set Location of Advisory Signal on Serial Port31 0 = Data Packet received on Left I2S Channel32 1 = Data Packet received on Right I2S Channel33 34 - cirrus,shared-boost : Boolean to enable ClassH tracking of Advisory Signal35 if 2 Devices share Boost BST_CTL36 37 - cirrus,external-boost : Boolean to specify the device is using an external38 boost supply, note that sharing a boost from another cs35l35 would constitute39 using an external supply for the slave device40 41 - cirrus,sp-drv-strength : Value for setting the Serial Port drive strength42 Table 3-10 of the datasheet lists drive-strength specifications43 0 = 1x (Default)44 1 = .5x45 - cirrus,sp-drv-unused : Determines how unused slots should be driven on the46 Serial Port.47 0 - Hi-Z48 2 - Drive 0's (Default)49 3 - Drive 1's50 51 - cirrus,bst-pdn-fet-on : Boolean to determine if the Boost PDN control52 powers down with a rectification FET On or Off. If VSPK is supplied53 externally then FET is off.54 55 - cirrus,boost-ctl-millivolt : Boost Voltage Value. Configures the boost56 converter's output voltage in mV. The range is from 2600mV to 9000mV with57 increments of 100mV.58 (Default) VP59 60 - cirrus,boost-peak-milliamp : Boost-converter peak current limit in mA.61 Configures the peak current by monitoring the current through the boost FET.62 Range starts at 1680mA and goes to a maximum of 4480mA with increments of63 110mA.64 (Default) 2.46 Amps65 66 - cirrus,amp-gain-zc : Boolean to determine if to use Amplifier gain-change67 zero-cross68 69Optional H/G Algorithm sub-node:70 71 The cs35l35 node can have a single "cirrus,classh-internal-algo" sub-node72 that will disable automatic control of the internal H/G Algorithm.73 74 It is strongly recommended that the Datasheet be referenced when adjusting75 or using these Class H Algorithm controls over the internal Algorithm.76 Serious damage can occur to the Device and surrounding components.77 78 - cirrus,classh-internal-algo : Sub-node for the Internal Class H Algorithm79 See Section 4.3 Internal Class H Algorithm in the Datasheet.80 If not used, the device manages the ClassH Algorithm internally.81 82Optional properties for the "cirrus,classh-internal-algo" Sub-node83 84 Section 7.29 Class H Control85 - cirrus,classh-bst-overide : Boolean86 - cirrus,classh-bst-max-limit87 - cirrus,classh-mem-depth88 89 Section 7.30 Class H Headroom Control90 - cirrus,classh-headroom91 92 Section 7.31 Class H Release Rate93 - cirrus,classh-release-rate94 95 Section 7.32 Class H Weak FET Drive Control96 - cirrus,classh-wk-fet-disable97 - cirrus,classh-wk-fet-delay98 - cirrus,classh-wk-fet-thld99 100 Section 7.34 Class H VP Control101 - cirrus,classh-vpch-auto102 - cirrus,classh-vpch-rate103 - cirrus,classh-vpch-man104 105Optional Monitor Signal Format sub-node:106 107 The cs35l35 node can have a single "cirrus,monitor-signal-format" sub-node108 for adjusting the Depth, Location and Frame of the Monitoring Signals109 for Algorithms.110 111 See Sections 4.8.2 through 4.8.4 Serial-Port Control in the Datasheet112 113 -cirrus,monitor-signal-format : Sub-node for the Monitor Signaling Formatting114 on the I2S Port. Each of the 3 8 bit values in the array contain the settings115 for depth, location, and frame.116 117 If not used, the defaults for the 6 monitor signals is used.118 119 Sections 7.44 - 7.53 lists values for the depth, location, and frame120 for each monitoring signal.121 122 - cirrus,imon : 4 8 bit values to set the depth, location, frame and ADC123 scale of the IMON monitor signal.124 125 - cirrus,vmon : 3 8 bit values to set the depth, location, and frame126 of the VMON monitor signal.127 128 - cirrus,vpmon : 3 8 bit values to set the depth, location, and frame129 of the VPMON monitor signal.130 131 - cirrus,vbstmon : 3 8 bit values to set the depth, location, and frame132 of the VBSTMON monitor signal133 134 - cirrus,vpbrstat : 3 8 bit values to set the depth, location, and frame135 of the VPBRSTAT monitor signal136 137 - cirrus,zerofill : 3 8 bit values to set the depth, location, and frame\138 of the ZEROFILL packet in the monitor signal139 140Example:141 142cs35l35: cs35l35@20 {143 compatible = "cirrus,cs35l35";144 reg = <0x20>;145 VA-supply = <&dummy_vreg>;146 VP-supply = <&dummy_vreg>;147 reset-gpios = <&axi_gpio 54 0>;148 interrupt-parent = <&gpio8>;149 interrupts = <3 IRQ_TYPE_LEVEL_LOW>;150 cirrus,boost-ctl-millivolt = <9000>;151 152 cirrus,stereo-config;153 cirrus,audio-channel = <0x00>;154 cirrus,advisory-channel = <0x01>;155 cirrus,shared-boost;156 157 cirrus,classh-internal-algo {158 cirrus,classh-bst-overide;159 cirrus,classh-bst-max-limit = <0x01>;160 cirrus,classh-mem-depth = <0x01>;161 cirrus,classh-release-rate = <0x08>;162 cirrus,classh-headroom-millivolt = <0x0B>;163 cirrus,classh-wk-fet-disable = <0x01>;164 cirrus,classh-wk-fet-delay = <0x04>;165 cirrus,classh-wk-fet-thld = <0x01>;166 cirrus,classh-vpch-auto = <0x01>;167 cirrus,classh-vpch-rate = <0x02>;168 cirrus,classh-vpch-man = <0x05>;169 };170 171 /* Depth, Location, Frame */172 cirrus,monitor-signal-format {173 cirrus,imon = /bits/ 8 <0x03 0x00 0x01>;174 cirrus,vmon = /bits/ 8 <0x03 0x00 0x00>;175 cirrus,vpmon = /bits/ 8 <0x03 0x04 0x00>;176 cirrus,vbstmon = /bits/ 8 <0x03 0x04 0x01>;177 cirrus,vpbrstat = /bits/ 8 <0x00 0x04 0x00>;178 cirrus,zerofill = /bits/ 8 <0x00 0x00 0x00>;179 };180 181};182