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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/devicetree/bindings/mfd/arizona.txt
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
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+Wolfson Arizona class audio SoCs
+
+These devices are audio SoCs with extensive digital capabilites and a range
+of analogue I/O.
+
+Required properties:
+
+ - compatible : One of the following chip-specific strings:
+ "wlf,wm5102"
+ "wlf,wm5110"
+ "wlf,wm8280"
+ "wlf,wm8997"
+ - reg : I2C slave address when connected using I2C, chip select number when
+ using SPI.
+
+ - interrupts : The interrupt line the /IRQ signal for the device is
+ connected to.
+ - interrupt-controller : Arizona class devices contain interrupt controllers
+ and may provide interrupt services to other devices.
+ - interrupt-parent : The parent interrupt controller.
+ - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
+ The first cell is the IRQ number.
+ The second cell is the flags, encoded as the trigger masks from
+ Documentation/devicetree/bindings/interrupts.txt
+
+ - gpio-controller : Indicates this device is a GPIO controller.
+ - #gpio-cells : Must be 2. The first cell is the pin number and the
+ second cell is used to specify optional parameters (currently unused).
+
+ - AVDD-supply, DBVDD1-supply, CPVDD-supply : Power supplies for the device,
+ as covered in Documentation/devicetree/bindings/regulator/regulator.txt
+
+ - DBVDD2-supply, DBVDD3-supply : Additional databus power supplies (wm5102,
+ wm5110, wm8280)
+
+ - SPKVDDL-supply, SPKVDDR-supply : Speaker driver power supplies (wm5102,
+ wm5110, wm8280)
+
+ - SPKVDD-supply : Speaker driver power supply (wm8997)
+
+Optional properties:
+
+ - wlf,reset : GPIO specifier for the GPIO controlling /RESET
+ - wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA
+
+ - wlf,gpio-defaults : A list of GPIO configuration register values. Defines
+ for the appropriate values can found in <dt-bindings/mfd/arizona.txt>. If
+ absent, no configuration of these registers is performed. If any entry has
+ a value that is out of range for a 16 bit register then the chip default
+ will be used. If present exactly five values must be specified.
+
+ - wlf,inmode : A list of INn_MODE register values, where n is the number
+ of input signals. Valid values are 0 (Differential), 1 (Single-ended) and
+ 2 (Digital Microphone). If absent, INn_MODE registers set to 0 by default.
+ If present, values must be specified less than or equal to the number of
+ input singals. If values less than the number of input signals, elements
+ that has not been specifed are set to 0 by default.
+
+ - wlf,dmic-ref : DMIC reference voltage source for each input, can be
+ selected from either MICVDD or one of the MICBIAS's, defines
+ (ARIZONA_DMIC_xxxx) are provided in <dt-bindings/mfd/arizona.txt>. If
+ present, the number of values should be less than or equal to the
+ number of inputs, unspecified inputs will use the chip default.
+
+ - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
+ they are being externally supplied. As covered in
+ Documentation/devicetree/bindings/regulator/regulator.txt
+
+Optional subnodes:
+ - ldo1 : Initial data for the LDO1 regulator, as covered in
+ Documentation/devicetree/bindings/regulator/regulator.txt
+ - micvdd : Initial data for the MICVDD regulator, as covered in
+ Documentation/devicetree/bindings/regulator/regulator.txt
+
+Example:
+
+codec: wm5102@1a {
+ compatible = "wlf,wm5102";
+ reg = <0x1a>;
+ interrupts = <347>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-parent = <&gic>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ wlf,gpio-defaults = <
+ ARIZONA_GP_FN_TXLRCLK
+ ARIZONA_GP_DEFAULT
+ ARIZONA_GP_DEFAULT
+ ARIZONA_GP_DEFAULT
+ ARIZONA_GP_DEFAULT
+ >;
+};