summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/mfd/mxs-lradc.txt
diff options
context:
space:
mode:
authorSascha Hauer <s.hauer@pengutronix.de>2017-06-06 08:07:28 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2017-06-06 08:07:28 +0200
commitbb2de9a333d17bb1b048ad208002501226b83f03 (patch)
tree8ef2e876ba43af235c45cb2280885e9c67ba5548 /dts/Bindings/mfd/mxs-lradc.txt
parent79e6629b02fb3a296b5dc70f16dec0f8d415ccf8 (diff)
downloadbarebox-bb2de9a333d17bb1b048ad208002501226b83f03.tar.gz
barebox-bb2de9a333d17bb1b048ad208002501226b83f03.tar.xz
dts: update to v4.12-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/mfd/mxs-lradc.txt')
-rw-r--r--dts/Bindings/mfd/mxs-lradc.txt47
1 files changed, 47 insertions, 0 deletions
diff --git a/dts/Bindings/mfd/mxs-lradc.txt b/dts/Bindings/mfd/mxs-lradc.txt
new file mode 100644
index 000000000..555fb117d
--- /dev/null
+++ b/dts/Bindings/mfd/mxs-lradc.txt
@@ -0,0 +1,47 @@
+* Freescale MXS LRADC device driver
+
+Required properties:
+- compatible: Should be "fsl,imx23-lradc" for i.MX23 SoC and "fsl,imx28-lradc"
+ for i.MX28 SoC
+- reg: Address and length of the register set for the device
+- interrupts: Should contain the LRADC interrupts
+
+Optional properties:
+- fsl,lradc-touchscreen-wires: Number of wires used to connect the touchscreen
+ to LRADC. Valid value is either 4 or 5. If this
+ property is not present, then the touchscreen is
+ disabled. 5 wires is valid for i.MX28 SoC only.
+- fsl,ave-ctrl: number of samples per direction to calculate an average value.
+ Allowed value is 1 ... 32, default is 4
+- fsl,ave-delay: delay between consecutive samples. Allowed value is
+ 2 ... 2048. It is used if 'fsl,ave-ctrl' > 1, counts at
+ 2 kHz and its default is 2 (= 1 ms)
+- fsl,settling: delay between plate switch to next sample. Allowed value is
+ 1 ... 2047. It counts at 2 kHz and its default is
+ 10 (= 5 ms)
+
+Example for i.MX23 SoC:
+
+ lradc@80050000 {
+ compatible = "fsl,imx23-lradc";
+ reg = <0x80050000 0x2000>;
+ interrupts = <36 37 38 39 40 41 42 43 44>;
+ status = "okay";
+ fsl,lradc-touchscreen-wires = <4>;
+ fsl,ave-ctrl = <4>;
+ fsl,ave-delay = <2>;
+ fsl,settling = <10>;
+ };
+
+Example for i.MX28 SoC:
+
+ lradc@80050000 {
+ compatible = "fsl,imx28-lradc";
+ reg = <0x80050000 0x2000>;
+ interrupts = <10 14 15 16 17 18 19 20 21 22 23 24 25>;
+ status = "okay";
+ fsl,lradc-touchscreen-wires = <5>;
+ fsl,ave-ctrl = <4>;
+ fsl,ave-delay = <2>;
+ fsl,settling = <10>;
+ };