linux-kernel - Re: [PATCH 4/4] Input: tsc2004

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Date:	Tue, 3 Nov 2015 09:41:17 -0600
From:	Michael Welling <mwelling@...e.org>
To:	Rob Herring <robh@...nel.org>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	kbuild test robot <lkp@...el.com>, kbuild-all@...org,
	Tony Lindgren <tony@...mide.com>, Pavel Machek <pavel@....cz>,
	Felipe Balbi <balbi@...com>,
	Sebastian Reichel <sre@...nel.org>,
	Roger Quadros <rogerq@...com>, Arnd Bergmann <arnd@...db.de>,
	Mark Brown <broonie@...nel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [PATCH 4/4] Input: tsc2004 - Document ts2004 dt bindings

On Tue, Nov 03, 2015 at 09:31:10AM -0600, Rob Herring wrote:
> On Tue, Nov 3, 2015 at 1:21 AM, Dmitry Torokhov
> <dmitry.torokhov@...il.com> wrote:
> > On Mon, Nov 02, 2015 at 02:50:29PM -0600, Michael Welling wrote:
> >> On Mon, Nov 02, 2015 at 09:19:50AM -0600, Rob Herring wrote:
> >> > > +Required properties:
> >> > > + - compatible                : "ti,tsc2004"
> >> > > + - interrupts                : IRQ specifier
> >> > > + - vio-supply                 : Regulator specifier
> >> >
> >> > reg property?
> >>
> >> Rob,
> >>
> >> It appears that I missed this in the description.
> >>
> >> Probably because I was following the lead of the ts2005 description.
> >>
> >> How does this look:
> >> - reg                 : I2C address. 0x48 - 0x4b based on the voltage applied to
> >>                         the AD1 and AD0 inputs on the IC.
> >>
> >
> > How about the version below?
> >
> > Thanks.
> >
> > --
> > Dmitry
> >
> >
> > Input: tsc2004 - document ts2004 dt bindings

Just noticed that it says ts2004 instead of tsc2004 in the subject.
Otherwise, I am fine with it.

Thanks for the assistance.

Still no acks or reviews for the other patches in the series.
I would like for someone to test the tsc2005 support to see if it still works.

The tsc2004 works very well on the target that I have here.

> >
> > From: Michael Welling <mwelling@...e.org>
> >
> > Adds documentation for the devicetree bindings of the new tsc2004 driver.
> >
> > Signed-off-by: Michael Welling <mwelling@...e.org>
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> 
> Acked-by: Rob Herring <robh@...nel.org>
> 
> > ---
> >  .../bindings/input/touchscreen/tsc2005.txt         |   34 ++++++++++++++++----
> >  1 file changed, 28 insertions(+), 6 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt b/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
> > index 09089a6..b80c04b 100644
> > --- a/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
> > +++ b/Documentation/devicetree/bindings/input/touchscreen/tsc2005.txt
> > @@ -1,14 +1,15 @@
> > -* Texas Instruments tsc2005 touchscreen controller
> > +* Texas Instruments tsc2004 and tsc2005 touchscreen controllers
> >
> >  Required properties:
> > - - compatible                : "ti,tsc2005"
> > - - reg                       : SPI device address
> > - - spi-max-frequency         : Maximal SPI speed
> > + - compatible                : "ti,tsc2004" or "ti,tsc2005"
> > + - reg                       : Device address
> >   - interrupts                : IRQ specifier
> > - - reset-gpios               : GPIO specifier
> > - - vio-supply                 : Regulator specifier
> > + - spi-max-frequency         : Maximum SPI clocking speed of the device
> > +                               (for tsc2005)
> >
> >  Optional properties:
> > + - vio-supply                : Regulator specifier
> > + - reset-gpios               : GPIO specifier for the controller reset line
> >   - ti,x-plate-ohms           : integer, resistance of the touchscreen's X plates
> >                                 in ohm (defaults to 280)
> >   - ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
> > @@ -18,6 +19,27 @@ Optional properties:
> >
> >  Example:
> >
> > +&i2c3 {
> > +       tsc2004@48 {
> > +               compatible = "ti,tsc2004";
> > +               reg = <0x48>;
> > +               vio-supply = <&vio>;
> > +
> > +               reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
> > +               interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>;
> > +
> > +               touchscreen-fuzz-x = <4>;
> > +               touchscreen-fuzz-y = <7>;
> > +               touchscreen-fuzz-pressure = <2>;
> > +               touchscreen-size-x = <4096>;
> > +               touchscreen-size-y = <4096>;
> > +               touchscreen-max-pressure = <2048>;
> > +
> > +               ti,x-plate-ohms = <280>;
> > +               ti,esd-recovery-timeout-ms = <8000>;
> > +       };
> > +}
> > +
> >  &mcspi1 {
> >         tsc2005@0 {
> >                 compatible = "ti,tsc2005";
--
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