diff options
author | Samuel Ortiz <sameo@linux.intel.com> | 2013-06-13 11:19:45 +0200 |
---|---|---|
committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-06-13 11:19:45 +0200 |
commit | 734f935afad0f1f640a922f17609823c740d36ec (patch) | |
tree | 432b3f7e480bc4bf4a77cc9d60e27872ae4658a7 /Documentation/devicetree | |
parent | f7d3210e8b45eea8561c08d35502d2baca07593a (diff) | |
parent | e5657054ff508c9e547a8ceb931de07838ee3ba0 (diff) | |
download | linux-734f935afad0f1f640a922f17609823c740d36ec.tar.gz linux-734f935afad0f1f640a922f17609823c740d36ec.tar.bz2 linux-734f935afad0f1f640a922f17609823c740d36ec.zip |
Merge tag 'mfd-arizona-v3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc
mfd: arizona: Updates for v3.10
A bunch of enhancements and fixes for the arizona devices, adding a few
new features (the main one being device tree) and improving robustness.
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r-- | Documentation/devicetree/bindings/mfd/arizona.txt | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt new file mode 100644 index 000000000000..0e295c9d8937 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/arizona.txt @@ -0,0 +1,62 @@ +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" + - 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). + + - AVDD1-supply, DBVDD1-supply, DBVDD2-supply, DBVDD3-supply, CPVDD-supply, + SPKVDDL-supply, SPKVDDR-supply : power supplies for the device, as covered + in Documentation/devicetree/bindings/regulator/regulator.txt + +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. 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. + +Example: + +codec: wm5102@1a { + compatible = "wlf,wm5102"; + reg = <0x1a>; + interrupts = <347>; + #interrupt-cells = <2>; + interrupt-parent = <&gic>; + + gpio-controller; + #gpio-cells = <2>; + + wlf,gpio-defaults = < + 0x00000000, /* AIF1TXLRCLK */ + 0xffffffff, + 0xffffffff, + 0xffffffff, + 0xffffffff, + >; +}; |