ARM: dts: dra7-evm: add pcf8575 gpio expander (i2c1 addr 20)
This patch adds DT definition for CF8575 GPIO pcf_lcd: gpio@20
expander which is connected to i2c bus 1 and has slave address 0x20.
It allows to control:
- tc_lcd gpios, pins p0-p3
- user leds, pins p4-p7
- control LCD panel power, p15
PCF8575 GPIO pcf_lcd: gpio@20 expander supports interrupt controller
functionality and its INT line is connected to dra7 GPIO6.11 pin.
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 1a66d35..d40418c 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -479,6 +479,17 @@
};
};
+ pcf_lcd: gpio@20 {
+ compatible = "nxp,pcf8575";
+ reg = <0x20>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-parent = <&gpio6>;
+ interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
pcf_gpio_21: gpio@21 {
compatible = "ti,pcf8575";
reg = <0x21>;