Add ADS7846 touchscreen support.
Signed-off-by: Dmitry Lifshitz <lifsh...@compulab.co.il>
---
arch/arm/boot/dts/omap5-cm-t54.dts | 61 ++++++++++++++++++++++++++++++++++++
1 files changed, 61 insertions(+), 0 deletions(-)
diff --git a/arch/arm/boot/dts/omap5-cm-t54.dts
b/arch/arm/boot/dts/omap5-cm-t54.dts
index 588cc2a..9cfcad5 100644
--- a/arch/arm/boot/dts/omap5-cm-t54.dts
+++ b/arch/arm/boot/dts/omap5-cm-t54.dts
@@ -45,6 +45,13 @@
enable-active-high;
};
+ ads7846reg: ads7846-reg {
+ compatible = "regulator-fixed";
+ regulator-name = "ads7846-reg";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
/* HS USB Host PHY on PORT 2 */
hsusb2_phy: hsusb2_phy {
compatible = "usb-nop-xceiv";
@@ -164,6 +171,15 @@
};
};
+&omap5_pmx_wkup {
+
+ ads7846_pins: pinmux_ads7846_pins {
+ pinctrl-single,pins = <
+ 0x02 (PIN_INPUT_PULLDOWN | MUX_MODE6) /*
llib_wakereqin.gpio1_wk15 */
+ >;
+ };
+};
+
&omap5_pmx_core {
pinctrl-names = "default";
pinctrl-0 = <
@@ -300,6 +316,51 @@
OMAP5_IOPAD(0x013a, PIN_OUTPUT | MUX_MODE3) /*
dispc_data23 */
>;
};
+
+ mcspi2_pins: pinmux_mcspi1_pins {
+ pinctrl-single,pins = <
+ OMAP5_IOPAD(0x00fc, PIN_INPUT | MUX_MODE0) /*
mcspi2_clk.mcspi2_clk */
+ OMAP5_IOPAD(0x00fe, PIN_INPUT | MUX_MODE0) /*
mcspi2_simo.mcspi2_simo */
+ OMAP5_IOPAD(0x0100, PIN_INPUT | MUX_MODE0) /*
mcspi2_somi.mcspi2_somi */
+ OMAP5_IOPAD(0x0102, PIN_INPUT | MUX_MODE0) /*
mcspi2_cs0.mcspi2_cs0 */
+ >;
+ };
+};
+
+&mcspi2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mcspi2_pins>;
+
+ /* touch controller */
+ ads7846@0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ads7846_pins>;
+
+ compatible = "ti,ads7846";
+ vcc-supply = <&ads7846reg>;
+
+ reg = <0>; /* CS0 */
+ spi-max-frequency = <1500000>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <15 0>; /* gpio1_wk15 */
+ pendown-gpio = <&gpio1 15 0>;
+
+
+ ti,x-min = /bits/ 16 <0x0>;
+ ti,x-max = /bits/ 16 <0x0fff>;
+ ti,y-min = /bits/ 16 <0x0>;
+ ti,y-max = /bits/ 16 <0x0fff>;
+
+ ti,x-plate-ohms = /bits/ 16 <180>;
+ ti,pressure-max = /bits/ 16 <255>;
+
+ ti,debounce-max = /bits/ 16 <30>;
+ ti,debounce-tol = /bits/ 16 <10>;
+ ti,debounce-rep = /bits/ 16 <1>;
+
+ linux,wakeup;
+ };
};
&mmc1 {
--
1.7.5.4
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