1 CS35L35 Boosted Speaker Amplifier
5 - compatible : "cirrus,cs35l35"
7 - reg : the I2C address of the device for I2C
9 - VA-supply, VP-supply : power supplies for the device,
11 Documentation/devicetree/bindings/regulator/regulator.txt.
13 - interrupt-parent : Specifies the phandle of the interrupt controller to
14 which the IRQs from CS35L35 are delivered to.
15 - interrupts : IRQ line info CS35L35.
16 (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
17 for further information relating to interrupt properties)
20 - reset-gpios : gpio used to reset the amplifier
22 - cirrus,stereo-config : Boolean to determine if there are 2 AMPs for a
25 - cirrus,audio-channel : Set Location of Audio Signal on Serial Port
26 0 = Data Packet received on Left I2S Channel
27 1 = Data Packet received on Right I2S Channel
29 - cirrus,advisory-channel : Set Location of Advisory Signal on Serial Port
30 0 = Data Packet received on Left I2S Channel
31 1 = Data Packet received on Right I2S Channel
33 - cirrus,shared-boost : Boolean to enable ClassH tracking of Advisory Signal
34 if 2 Devices share Boost BST_CTL
36 - cirrus,external-boost : Boolean to specify the device is using an external
37 boost supply, note that sharing a boost from another cs35l35 would constitute
38 using an external supply for the slave device
40 - cirrus,sp-drv-strength : Value for setting the Serial Port drive strength
41 Table 3-10 of the datasheet lists drive-strength specifications
44 - cirrus,sp-drv-unused : Determines how unused slots should be driven on the
47 2 - Drive 0's (Default)
50 - cirrus,bst-pdn-fet-on : Boolean to determine if the Boost PDN control
51 powers down with a rectification FET On or Off. If VSPK is supplied
52 externally then FET is off.
54 - cirrus,boost-ctl-millivolt : Boost Voltage Value. Configures the boost
55 converter's output voltage in mV. The range is from 2600mV to 9000mV with
59 - cirrus,boost-peak-milliamp : Boost-converter peak current limit in mA.
60 Configures the peak current by monitoring the current through the boost FET.
61 Range starts at 1680mA and goes to a maximum of 4480mA with increments of
65 - cirrus,amp-gain-zc : Boolean to determine if to use Amplifier gain-change
68 Optional H/G Algorithm sub-node:
70 The cs35l35 node can have a single "cirrus,classh-internal-algo" sub-node
71 that will disable automatic control of the internal H/G Algorithm.
73 It is strongly recommended that the Datasheet be referenced when adjusting
74 or using these Class H Algorithm controls over the internal Algorithm.
75 Serious damage can occur to the Device and surrounding components.
77 - cirrus,classh-internal-algo : Sub-node for the Internal Class H Algorithm
78 See Section 4.3 Internal Class H Algorithm in the Datasheet.
79 If not used, the device manages the ClassH Algorithm internally.
81 Optional properties for the "cirrus,classh-internal-algo" Sub-node
83 Section 7.29 Class H Control
84 - cirrus,classh-bst-overide : Boolean
85 - cirrus,classh-bst-max-limit
86 - cirrus,classh-mem-depth
88 Section 7.30 Class H Headroom Control
89 - cirrus,classh-headroom
91 Section 7.31 Class H Release Rate
92 - cirrus,classh-release-rate
94 Section 7.32 Class H Weak FET Drive Control
95 - cirrus,classh-wk-fet-disable
96 - cirrus,classh-wk-fet-delay
97 - cirrus,classh-wk-fet-thld
99 Section 7.34 Class H VP Control
100 - cirrus,classh-vpch-auto
101 - cirrus,classh-vpch-rate
102 - cirrus,classh-vpch-man
104 Optional Monitor Signal Format sub-node:
106 The cs35l35 node can have a single "cirrus,monitor-signal-format" sub-node
107 for adjusting the Depth, Location and Frame of the Monitoring Signals
110 See Sections 4.8.2 through 4.8.4 Serial-Port Control in the Datasheet
112 -cirrus,monitor-signal-format : Sub-node for the Monitor Signaling Formating
113 on the I2S Port. Each of the 3 8 bit values in the array contain the settings
114 for depth, location, and frame.
116 If not used, the defaults for the 6 monitor signals is used.
118 Sections 7.44 - 7.53 lists values for the depth, location, and frame
119 for each monitoring signal.
121 - cirrus,imon : 4 8 bit values to set the depth, location, frame and ADC
122 scale of the IMON monitor signal.
124 - cirrus,vmon : 3 8 bit values to set the depth, location, and frame
125 of the VMON monitor signal.
127 - cirrus,vpmon : 3 8 bit values to set the depth, location, and frame
128 of the VPMON monitor signal.
130 - cirrus,vbstmon : 3 8 bit values to set the depth, location, and frame
131 of the VBSTMON monitor signal
133 - cirrus,vpbrstat : 3 8 bit values to set the depth, location, and frame
134 of the VPBRSTAT monitor signal
136 - cirrus,zerofill : 3 8 bit values to set the depth, location, and frame\
137 of the ZEROFILL packet in the monitor signal
141 cs35l35: cs35l35@20 {
142 compatible = "cirrus,cs35l35";
144 VA-supply = <&dummy_vreg>;
145 VP-supply = <&dummy_vreg>;
146 reset-gpios = <&axi_gpio 54 0>;
147 interrupt-parent = <&gpio8>;
148 interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
149 cirrus,boost-ctl-millivolt = <9000>;
151 cirrus,stereo-config;
152 cirrus,audio-channel = <0x00>;
153 cirrus,advisory-channel = <0x01>;
156 cirrus,classh-internal-algo {
157 cirrus,classh-bst-overide;
158 cirrus,classh-bst-max-limit = <0x01>;
159 cirrus,classh-mem-depth = <0x01>;
160 cirrus,classh-release-rate = <0x08>;
161 cirrus,classh-headroom-millivolt = <0x0B>;
162 cirrus,classh-wk-fet-disable = <0x01>;
163 cirrus,classh-wk-fet-delay = <0x04>;
164 cirrus,classh-wk-fet-thld = <0x01>;
165 cirrus,classh-vpch-auto = <0x01>;
166 cirrus,classh-vpch-rate = <0x02>;
167 cirrus,classh-vpch-man = <0x05>;
170 /* Depth, Location, Frame */
171 cirrus,monitor-signal-format {
172 cirrus,imon = /bits/ 8 <0x03 0x00 0x01>;
173 cirrus,vmon = /bits/ 8 <0x03 0x00 0x00>;
174 cirrus,vpmon = /bits/ 8 <0x03 0x04 0x00>;
175 cirrus,vbstmon = /bits/ 8 <0x03 0x04 0x01>;
176 cirrus,vpbrstat = /bits/ 8 <0x00 0x04 0x00>;
177 cirrus,zerofill = /bits/ 8 <0x00 0x00 0x00>;