| Message ID | 1429589505-11954-3-git-send-email-ideal.song@samsung.com |
|---|---|
| State | Superseded, archived |
| Headers | show |
Does this looks okay to you Charles? > This patch add device tree bindings for the pdata needed to configure > the Accessory Detect Mode select when Headphone detection. Isn't the idea of headphone detection that it headphones are detected i.e. automatically? > Signed-off-by: Inha Song <ideal.song@samsung.com> > --- > Documentation/devicetree/bindings/mfd/arizona.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt > index 7bd1273..3529592 100644 > --- a/Documentation/devicetree/bindings/mfd/arizona.txt > +++ b/Documentation/devicetree/bindings/mfd/arizona.txt > @@ -49,6 +49,12 @@ Optional properties: > input singals. If values less than the number of input signals, elements > that has not been specifed are set to 0 by default. > > + - wlf,hpdet-channel : Headphone detection channel. > + 1 or ARIZONA_ACCDET_MODE_HPL - Headphone detect mode is set to HPDETL > + 2 or ARIZONA_ACCDET_MODE_HPR - Headphone detect mode is set to HPDETR > + If this node is not mentioned or if the value is unknown, then > + headphone detection mode is set to MICDET. > + > - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if > they are being externally supplied. As covered in > Documentation/devicetree/bindings/regulator/regulator.txt
On Wed, Apr 29, 2015 at 11:57:37AM +0100, Lee Jones wrote: > Does this looks okay to you Charles? > > > This patch add device tree bindings for the pdata needed to configure > > the Accessory Detect Mode select when Headphone detection. > > Isn't the idea of headphone detection that it headphones are detected > i.e. automatically? > Yeah, pretty much the chip can run an impedance measurement on either the left or the right headphone pin and to complicate things a little further you don't necessarily have to wire that to the actual headphones in hardware. So people tend to wire up all sorts of odd things that they thought sounded awesome. So you do really need a way to inform the driver which pin is actually going to be useful for measuring the headphone impedance on a specific system. In an ideal world we would just measure both and take the average, but in practice it is very dependent on how the hardware is wired up. Thanks, Charles -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt index 7bd1273..3529592 100644 --- a/Documentation/devicetree/bindings/mfd/arizona.txt +++ b/Documentation/devicetree/bindings/mfd/arizona.txt @@ -49,6 +49,12 @@ Optional properties: input singals. If values less than the number of input signals, elements that has not been specifed are set to 0 by default. + - wlf,hpdet-channel : Headphone detection channel. + 1 or ARIZONA_ACCDET_MODE_HPL - Headphone detect mode is set to HPDETL + 2 or ARIZONA_ACCDET_MODE_HPR - Headphone detect mode is set to HPDETR + If this node is not mentioned or if the value is unknown, then + headphone detection mode is set to MICDET. + - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if they are being externally supplied. As covered in Documentation/devicetree/bindings/regulator/regulator.txt
This patch add device tree bindings for the pdata needed to configure the Accessory Detect Mode select when Headphone detection. Signed-off-by: Inha Song <ideal.song@samsung.com> --- Documentation/devicetree/bindings/mfd/arizona.txt | 6 ++++++ 1 file changed, 6 insertions(+)