On Thu, Apr 14, 2016 at 5:22 PM, paul.handrigan@cirrus.com wrote:
From: Paul Handrigan Paul.Handrigan@cirrus.com
Please send to DT list.
Add device tree bindings file for the cs35l33 8V boosted class D amplifier.
Signed-off-by: Paul Handrigan Paul.Handrigan@cirrus.com
.../devicetree/bindings/sound/cs35l33.txt | 69 ++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/cs35l33.txt
diff --git a/Documentation/devicetree/bindings/sound/cs35l33.txt b/Documentation/devicetree/bindings/sound/cs35l33.txt new file mode 100644 index 0000000..434250c --- /dev/null +++ b/Documentation/devicetree/bindings/sound/cs35l33.txt @@ -0,0 +1,69 @@ +CS35L33 Speaker Amplifier
+Required properties:
- compatible : "cirrus,cs35l33"
- reg : the I2C address of the device for I2C
- VA-supply, VP-supply : power supplies for the device,
- as covered in
- Documentation/devicetree/bindings/regulator/regulator.txt.
+Optional properties:
- cirrus,reset-gpios : gpio used to reset the amplifier
reset-gpios is common enough you can drop cirrus.
- interrupt-parent : Specifies the phandle of the interrupt controller to
- which the IRQs from CS35L33 are delivered to.
- interrupts : IRQ line info CS35L33.
- (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
- for further information relating to interrupt properties)
- cirrus,boost-ctl : Booster voltage use to supply the amp, if this is not
- set then the internal 1.0V LDO will supply the amp.
boolean or ?...
- cirrus,ramp-rate : On power up, it affects the time from when the power
- up sequence begins to the time the audio reaches a full-scale output.
- On power down, it affects the time from when the power-down sequence
- begins to when the amplifier disables the PWM outputs. If this property
- is not set then soft ramping will be disabled and ramp time would be
- 20ms. If this property is set to 0,1,2,3 then ramp times would be 40ms,
- 60ms,100ms,175ms respectively for 48KHz sample rate.
- cirrus,boost-ipk : Booster peak current
Add unit prefix.
- cirrus,hg-algo : parameters for internal h/g algorithm that controls
- the amplifier supplies
Doesn't match the example.
+Example:
+cs35l33: cs35l33@40 {
compatible = "cirrus,cs35l33";reg = <0x40>;VA-supply = <&ldo5_reg>;VP-supply = <&ldo5_reg>;interrupt-parent = <&gpio8>;interrupts = <3 IRQ_TYPE_LEVEL_LOW>;reset-gpios = <&cs47l91 34 0>;ramp-rate = <0x0>;boost-ctl = <0x0>;boost-ipk = <0xE0>;hg-algo {mem-depth = <0x3>;release-rate = <0x3>;hd-rm = <0xA>;ldo-thld = <0x1>;ldo-path-disable = <0x0>;ldo-entry-delay=<0x4>;vp-hg-auto;vp-hg=<0xF>;vp-hg-rate=<0x2>;vp-hg-va=<0x0>;};+};
1.9.1