[PATCH 3/3] ARM: dts: sun6i: Columbus: Add i2c controller for communicating with the LCD
From: Hans de Goede <hidden>
Date: 2015-08-07 15:22:35
Also in:
linux-devicetree
Subsystem:
the rest · Maintainer:
Linus Torvalds
Possibly related (same subject, not in this thread)
- 2015-08-19 · Re: [PATCH 3/3] ARM: dts: sun6i: Columbus: Add i2c controller for communicating with the LCD · Maxime Ripard <hidden>
The Colombus development kit uses an optional 2048x1536 edp panel using an anx9804 parallel lcd to edp convertor. The anx9804 chip is controlled via an i2c bus which is connected to 2 regular gpio pins. Signed-off-by: Hans de Goede <redacted> --- arch/arm/boot/dts/sun6i-a31-colombus.dts | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/arch/arm/boot/dts/sun6i-a31-colombus.dts b/arch/arm/boot/dts/sun6i-a31-colombus.dts
index 0d0b6f2..0e51249 100644
--- a/arch/arm/boot/dts/sun6i-a31-colombus.dts
+++ b/arch/arm/boot/dts/sun6i-a31-colombus.dts@@ -60,6 +60,16 @@ chosen { stdout-path = "serial0:115200n8"; }; + + i2c_lcd: i2c at 0 { + /* The lcd panel i2c interface is hooked up via gpios */ + compatible = "i2c-gpio"; + pinctrl-names = "default"; + pinctrl-0 = <&i2c_lcd_pins>; + gpios = <&pio 0 23 GPIO_ACTIVE_HIGH>, /* PA23, sda */ + <&pio 0 24 GPIO_ACTIVE_HIGH>; /* PA24, scl */ + i2c-gpio,delay-us = <5>; + }; }; &ehci1 {
@@ -124,6 +134,13 @@ allwinner,drive = <SUN4I_PINCTRL_10_MA>; allwinner,pull = <SUN4I_PINCTRL_NO_PULL>; }; + + i2c_lcd_pins: i2c_lcd_pin at 0 { + allwinner,pins = "PA23", "PA24"; + allwinner,function = "gpio_out"; + allwinner,drive = <SUN4I_PINCTRL_10_MA>; + allwinner,pull = <SUN4I_PINCTRL_PULL_UP>; + }; }; ®_usb2_vbus {
--
2.4.3