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Subject[PATCH v4 3/3] arm64: dts: allwinner: a64-oceanic-5205-5inmfd: Enable GT911 CTP
Date
Goodix GT911 CTP is bound with Oceanic 5205 5inMFD board.

The CTP connected to board with,
- SDA, SCK from i2c0
- GPIO-LD0 as AVDD28 supply
- PH4 gpio as interrupt pin
- PH11 gpio as reset pin
- X axis is inverted
- Y axis is inverted

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Changes for v4:
- drop i2c0 pinctrl
Changes for v3:
- Use 2.8v for reg_ldo_io0
Changes for v2:
- drop i2c1, bias-pull-up

.../sun50i-a64-oceanic-5205-5inmfd.dts | 23 +++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts
index 6a2154525d1e..787ebd805a3b 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-oceanic-5205-5inmfd.dts
@@ -37,6 +37,22 @@
status = "okay";
};

+&i2c0 {
+ status = "okay";
+
+ touchscreen@5d {
+ compatible = "goodix,gt911";
+ reg = <0x5d>;
+ AVDD28-supply = <&reg_ldo_io0>; /* VDD_CTP: GPIO0-LDO */
+ interrupt-parent = <&pio>;
+ interrupts = <7 4 IRQ_TYPE_EDGE_FALLING>;
+ irq-gpios = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* CTP-INT: PH4 */
+ reset-gpios = <&pio 7 11 GPIO_ACTIVE_HIGH>; /* CTP-RST: PH11 */
+ touchscreen-inverted-x;
+ touchscreen-inverted-y;
+ };
+};
+
&mdio {
ext_rgmii_phy: ethernet-phy@1 {
compatible = "ethernet-phy-ieee802.3-c22";
@@ -52,6 +68,13 @@
regulator-name = "vcc-phy";
};

+&reg_ldo_io0 {
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+ regulator-name = "vdd-ctp";
+ status = "okay";
+};
+
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pb_pins>;
--
2.18.0.321.gffc6fa0e3
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