From 00ce25c6dcdae5582ae4be37147ab33678adc995 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Fri, 25 Apr 2014 11:22:32 +0200 Subject: Add devicetree source files as of Linux-3.15-rc2 This adds the Linux dts files to barebox. The dts files are generated from Ian Campbells device-tree-rebasing.git: git://xenbits.xen.org/people/ianc/device-tree-rebasing.git The dts are found in dts/ in the barebox repository and will be updated from upstream regularly, probably for each upstream -rc. To keep the synchronization with upstream easy no changes to the original files are allowed under dts/. Instead changes to upstream dts files will be done using overlays in arch/$ARCH/dts/. Signed-off-by: Sascha Hauer --- dts/Bindings/mfd/arizona.txt | 65 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 dts/Bindings/mfd/arizona.txt (limited to 'dts/Bindings/mfd/arizona.txt') diff --git a/dts/Bindings/mfd/arizona.txt b/dts/Bindings/mfd/arizona.txt new file mode 100644 index 0000000000..36a0c3d8c7 --- /dev/null +++ b/dts/Bindings/mfd/arizona.txt @@ -0,0 +1,65 @@ +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,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, DBVDD2-supply, DBVDD3-supply (wm5102, wm5110), + CPVDD-supply, SPKVDDL-supply (wm5102, wm5110), SPKVDDR-supply (wm5102, + wm5110), SPKVDD-supply (wm8997) : 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-controller; + #interrupt-cells = <2>; + interrupt-parent = <&gic>; + + gpio-controller; + #gpio-cells = <2>; + + wlf,gpio-defaults = < + 0x00000000 /* AIF1TXLRCLK */ + 0xffffffff + 0xffffffff + 0xffffffff + 0xffffffff + >; +}; -- cgit v1.2.3