| Message ID | 1460672524-27855-2-git-send-email-paul.handrigan@cirrus.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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 >
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 + + - 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. + + - 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 + + - cirrus,hg-algo : parameters for internal h/g algorithm that controls + the amplifier supplies + +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>; + }; +};