On 6/7/16, 11:10 AM, "Handrigan, Paul" <Paul.Handrigan@xxxxxxxxxx> wrote: > > >On 6/7/16, 8:55 AM, "Rob Herring" <robh@xxxxxxxxxx> wrote: > >>On Fri, Jun 03, 2016 at 03:11:48PM -0500, Paul.Handrigan@xxxxxxxxxx >>wrote: >>> From: Paul Handrigan <Paul.Handrigan@xxxxxxxxxx> >>> >>> Add device tree bindings file for the cs35l33 8V boosted >>> class D amplifier. >>> >>> Signed-off-by: Paul Handrigan <Paul.Handrigan@xxxxxxxxxx> >>> --- >>> .../devicetree/bindings/sound/cs35l33.txt | 114 >>>+++++++++++++++++++++ >>> 1 file changed, 114 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..01fa8fd >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/sound/cs35l33.txt >>> @@ -0,0 +1,114 @@ >>> +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: >>> + >>> + - 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) >>> + >>> + - boost-ctl : Booster voltage use to supply the amp. If the value is >>> + 0, then VBST = VP. If greater than 0, the boost voltage will be >>>3300mV with >>> + a value of 1 and will increase at a step size of 100mV until a >>>maximum of >>> + 8000mV. >>> + >>> + - 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. >>> + >>> + - boost-ipk : The maximum current allowed for the boost converter. >>> + The range starts at 1850mA (0xF0) and goes to a maximum of 3600mA >>>(0xE0) >>> + with a step size of 15.625mA. The default is 2500mA (0x90). >> >>This is still not in microamps. In other words, instead of 0xF0, use >>1850000. > >OK, I will change this. However, 1850mA would be 1.85A as what we would >want. 1850000mA is >1850A. So, we would want a value of 1850 instead of 0xF0. Sorry, I got this wrong. Will set to uA. >> >>Similar comment for any other properties where this would make sense. >> >>> + >>> + - hg-algo : Parameters for internal Class H/G algorithm that >>> + controls the amplifier supplies. >>> + >>> + - mem-depth : Memory depth for the Class H/G algorithm measured in >>>LRCLK >>> + cycles. If this property is set to 0, 1, 2, or 3 then the memory >>>depths >>> + will be 1, 4, 8, 16 LRCLK cycles. The default is 16 LRCLK cycles. >>> + >>> + release-rate : The number of consecutive LRCLK periods before >>>allowing >>> + release condition tracking updates. The number of LRCLK periods >>>start >>> + at 3 to a maximum of 255. >>> + >>> + - ldo-thld : Configures the signal threshold at which the PWM output >>>stage >>> + enters LDO operation. Starts as a default value of 50mV for a >>>value of 1 >>> + and increases with a step size of 50mV to a maximum of 750mV >>>(value of >>> + 0xF). >>> + >>> + - ldo-path-disable : This is a boolean property. If present, the H/G >>> + algorithm uses the max detection path. If not present, the LDO >>> + detection path is used. >>> + >>> + - ldo-entry-delay : The LDO entry delay in milliseconds before the >>>H/G >>> + algorithm switches to the LDO voltage. This property can be set >>>to values >>> + from 0 to 7 for delays of 5ms, 10ms, 50ms, 100ms, 200ms, 500ms, >>>1000ms. >>> + The default is 100ms. >>> + >>> + - vp-hg-auto : This is a boolean property. When set, class H/G VPhg >>> + automatic updating is enabled. >>> + >>> + - vp-hg : Class H/G algorithm VPhg. Controls the H/G algorithm's >>> + reference to the VP voltage for when to start generating a boosted >>>VBST. >>> + The reference voltage starts at 3000mV with a value of 0x3 and is >>>increased >>> + by 100mV per step to a maximum of 5500mV. >>> + >>> + - vp-hg-rate : The rate (number of LRCLK periods) at which the VPhg >>>is >>> + allowed to increase to a higher voltage when using VPhg automatic >>> + tracking. This property can be set to values from 0 to 3 with >>>rates of 128 >>> + periods, 2048 periods, 32768 periods, and 524288 periods. >>> + The default is 32768 periods. >>> + >>> + - vp-hg-va : VA calculation reference for automatic VPhg tracking >>>using VPMON. >>> + This property can be set to values from 0 to 6 starting at 1800mV >>>with a >>> + step size of 50mV up to a maximum value of 1750mV. Default is >>>1800mV. >> >>As I said on the last version, all these non-common properties need >>vendor prefixes. > >Sorry, I will add in the vendor prefixes. > >> >>Rob > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
