ARM: dts: ux500: Add Cypress CTTYSP touch to TVK UIB
The TVK1281618 R3 UIB has a Cypress CTTYSP touchscreen.
Add it to the device tree file.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/boot/dts/ste-href-tvk1281618-r3.dtsi b/arch/arm/boot/dts/ste-href-tvk1281618-r3.dtsi
index 707d453..70f0583 100644
--- a/arch/arm/boot/dts/ste-href-tvk1281618-r3.dtsi
+++ b/arch/arm/boot/dts/ste-href-tvk1281618-r3.dtsi
@@ -118,6 +118,38 @@
};
};
+ spi@80111000 {
+ num-cs = <1>;
+ cs-gpios = <&gpio6 24 GPIO_ACTIVE_LOW>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi2_default_mode>;
+ status = "okay";
+
+ touchscreen@0 {
+ compatible = "cypress,cy8ctma340";
+ /*
+ * Actually the max frequency is 6 MHz, but over 2 MHz the
+ * data rate needs to be restricted to max 2Mbps which the
+ * SPI framework cannot handle.
+ */
+ spi-max-frequency = <2000000>;
+ reg = <0>;
+ interrupt-parent = <&gpio2>;
+ interrupts = <20 IRQ_TYPE_EDGE_FALLING>;
+ vcpin-supply = <&ab8500_ldo_aux1_reg>;
+ vdd-supply = <&db8500_vsmps2_reg>;
+ reset-gpios = <&gpio4 15 GPIO_ACTIVE_LOW>;
+ touchscreen-size-x = <480>;
+ touchscreen-size-y = <854>;
+ active-interval-ms = <0>;
+ touch-timeout-ms = <255>;
+ lowpower-interval-ms = <10>;
+ bootloader-key = /bits/ 8 <0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&cyttsp_tvk_mode>;
+ };
+ };
+
mcde@a0350000 {
status = "okay";
@@ -167,6 +199,20 @@
};
};
};
+ cyttsp {
+ cyttsp_tvk_mode: cyttsp_tvk {
+ /* Touchscreen uses GPIO84 for IRQ */
+ tvk_cfg1 {
+ pins = "GPIO84_C2";
+ ste,config = <&gpio_in_pu>;
+ };
+ /* GPIO143 is reset */
+ tvk_cfg2 {
+ pins = "GPIO143_D12";
+ ste,config = <&gpio_out_hi>;
+ };
+ };
+ };
};
};
};
