Thread (12 messages) 12 messages, 5 authors, 2015-11-21

Re: [PATCH v8 3/8] ARM: dt: Binding documentation for imx25 touchscreen controller

From: Dmitry Torokhov <hidden>
Date: 2015-11-17 18:21:33
Also in: linux-arm-kernel, linux-devicetree, linux-iio

On Mon, Nov 16, 2015 at 08:16:09AM -0600, Rob Herring wrote:
On Mon, Nov 16, 2015 at 01:01:04PM +0100, Markus Pargmann wrote:
quoted
This is the touchscreen conversion queue binding documentation. It uses
the shared imx25 ADC.

Signed-off-by: Markus Pargmann <redacted>
---

Notes:
    Changes in v5:
     - Fix signed/unsigned comparison
     - Fix unused variable settling_time by putting it in the correct argument list
     - Use continous conversion queue with the repeat feature and a proper
       repeat-wait. Previously the touchscreen caused massive number of interrupts.

 .../bindings/input/touchscreen/fsl-mx25-tcq.txt    | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/touchscreen/fsl-mx25-tcq.txt
diff --git a/Documentation/devicetree/bindings/input/touchscreen/fsl-mx25-tcq.txt b/Documentation/devicetree/bindings/input/touchscreen/fsl-mx25-tcq.txt
new file mode 100644
index 000000000000..89ab47a3acc1
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/touchscreen/fsl-mx25-tcq.txt
@@ -0,0 +1,29 @@
+Freescale mx25 TS conversion queue module
+
+mx25 touchscreen conversion queue module which controls the ADC unit of the
+mx25 for attached touchscreens.
+
+Required properties:
+ - compatible: Should be "fsl,imx25-tcq".
+ - reg: Memory range of the device.
+ - interrupts: Should be the interrupt number associated with this module within
+   the tscadc unit (<0>).
+ - interrupt-parent: Should be a phandle to the tscadc unit.
+ - fsl,wires: Should be '<4>' or '<5>'
+
+Optional properties:
+ - fsl,pen-debounce: Pen debounce time in nanoseconds.
+ - fsl,pen-threshold: Pen-down threshold for the touchscreen.
+ - fsl,settling-time: Settling time in nanoseconds.
Don't we have standard properties for these?
These are usually controller-specific so no.

Thanks.

-- 
Dmitry
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