From 4fbdc6ab836f54e7559a637d9db44be7535c0889 Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Thu, 27 Aug 2015 18:20:45 +0300 Subject: [PATCH] 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 Signed-off-by: Grygorii Strashko Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/dra7-evm.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts index 1a66d359f3e3..d40418c8d5a3 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>; -- 2.39.5