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authorRichard Fitzgerald <rf@opensource.cirrus.com>2018-05-21 10:59:55 +0100
committerLee Jones <lee.jones@linaro.org>2018-06-05 11:14:45 +0100
commit2b49088cdba7dd59693887532e4058ee33b42d87 (patch)
tree82a30ef3da6029a8dd0ff7918d9a396ffd42c6e5 /Documentation/devicetree/bindings/mfd
parent97c2b5cba2044f1c0bc3f14d7102176dbcf81af0 (diff)
mfd: madera: Add DT bindings for Cirrus Logic Madera codecs
Specification of the bindings for the parent MFD driver component of the Cirrus Logic Madera codec drivers. Note that although the interrupt controller and GPIO are child drivers their required bindings are trivial, mandatory, and exist within the parent MFD node so are documented here. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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+Cirrus Logic Madera class audio codecs Multi-Functional Device
+
+These devices are audio SoCs with extensive digital capabilities and a range
+of analogue I/O.
+
+See also the child driver bindings in:
+bindings/pinctrl/cirrus,madera-pinctrl.txt
+bindings/regulator/arizona-regulator.txt
+bindings/sound/madera.txt
+
+Required properties:
+
+ - compatible : One of the following chip-specific strings:
+ "cirrus,cs47l35"
+ "cirrus,cs47l85"
+ "cirrus,cs47l90"
+ "cirrus,cs47l91"
+ "cirrus,wm1840"
+
+ - reg : I2C slave address when connected using I2C, chip select number when
+ using SPI.
+
+ - DCVDD-supply : Power supply for the device as defined in
+ bindings/regulator/regulator.txt
+ Mandatory on CS47L35, CS47L90, CS47L91
+ Optional on CS47L85, WM1840
+
+ - AVDD-supply, DBVDD1-supply, DBVDD2-supply, CPVDD1-supply, CPVDD2-supply :
+ Power supplies for the device
+
+ - DBVDD3-supply, DBVDD4-supply : Power supplies for the device
+ (CS47L85, CS47L90, CS47L91, WM1840)
+
+ - SPKVDDL-supply, SPKVDDR-supply : Power supplies for the device
+ (CS47L85, WM1840)
+
+ - SPKVDD-supply : Power supply for the device
+ (CS47L35)
+
+ - interrupt-controller : Indicates that this device is an interrupt controller
+
+ - #interrupt-cells: the number of cells to describe an IRQ, must be 2.
+ The first cell is the IRQ number.
+ The second cell is the flags, encoded as the trigger masks from
+ bindings/interrupt-controller/interrupts.txt
+
+ - gpio-controller : Indicates this device is a GPIO controller.
+
+ - #gpio-cells : Must be 2. The first cell is the pin number. The second cell
+ is reserved for future use and must be zero
+
+ - interrupt-parent : The parent interrupt controller.
+
+ - interrupts : The interrupt line the /IRQ signal for the device is
+ connected to.
+
+Optional properties:
+
+ - MICVDD-supply : Power supply, only need to be specified if
+ powered externally
+
+ - reset-gpios : One entry specifying the GPIO controlling /RESET.
+ As defined in bindings/gpio.txt.
+ Although optional, it is strongly recommended to use a hardware reset
+
+ - MICBIASx : Initial data for the MICBIAS regulators, as covered in
+ Documentation/devicetree/bindings/regulator/regulator.txt.
+ One for each MICBIAS generator (MICBIAS1, MICBIAS2, ...)
+ (all codecs)
+
+ One for each output pin (MICBIAS1A, MIBCIAS1B, MICBIAS2A, ...)
+ (all except CS47L85, WM1840)
+
+ The following following additional property is supported for the generator
+ nodes:
+ - cirrus,ext-cap : Set to 1 if the MICBIAS has external decoupling
+ capacitors attached.
+
+Optional child nodes:
+ micvdd : Node containing initialization data for the micvdd regulator
+ See bindings/regulator/arizona-regulator.txt
+
+ ldo1 : Node containing initialization data for the LDO1 regulator
+ See bindings/regulator/arizona-regulator.txt
+ (cs47l85, wm1840)
+
+Example:
+
+cs47l85@0 {
+ compatible = "cirrus,cs47l85";
+ reg = <0>;
+
+ reset-gpios = <&gpio 0>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <&host_irq1>;
+ interrupt-parent = <&gic>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+};