Thread (15 messages) 15 messages, 3 authors, 2015-11-03

Re: [PATCH 4/4] Input: tsc2004 - Document ts2004 dt bindings

From: Michael Welling <hidden>
Date: 2015-11-03 15:41:35
Also in: linux-devicetree, lkml

On Tue, Nov 03, 2015 at 09:31:10AM -0600, Rob Herring wrote:
On Tue, Nov 3, 2015 at 1:21 AM, Dmitry Torokhov
[off-list ref] wrote:
quoted
On Mon, Nov 02, 2015 at 02:50:29PM -0600, Michael Welling wrote:
quoted
On Mon, Nov 02, 2015 at 09:19:50AM -0600, Rob Herring wrote:
quoted
quoted
+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.
quoted
From: Michael Welling <redacted>

Adds documentation for the devicetree bindings of the new tsc2004 driver.

Signed-off-by: Michael Welling <redacted>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
quoted
---
 .../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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