From 6cc71374002e90bd0caadfb1d2c2bfaa8fb7d92a Mon Sep 17 00:00:00 2001 From: Amelie Delaunay Date: Mon, 24 Oct 2022 11:46:48 +0200 Subject: [PATCH] ARM: dts: stm32: add mcp23017 IO expander on I2C1 on stm32mp135f-dk MCP23017 is an IO expander offering 16 input/output port expander with interrupt output. On stm32mp135f-dk, only INTA is routed (on PG12), but MCP23017 can mirror the bank B interrupts on INTA, that's why the property microchip,irq-mirror is used. Signed-off-by: Amelie Delaunay Signed-off-by: Alexandre Torgue --- arch/arm/boot/dts/stm32mp135f-dk.dts | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/boot/dts/stm32mp135f-dk.dts b/arch/arm/boot/dts/stm32mp135f-dk.dts index b7bf36b..9ff5a3e 100644 --- a/arch/arm/boot/dts/stm32mp135f-dk.dts +++ b/arch/arm/boot/dts/stm32mp135f-dk.dts @@ -129,6 +129,20 @@ /delete-property/dmas; /delete-property/dma-names; + mcp23017: pinctrl@21 { + compatible = "microchip,mcp23017"; + reg = <0x21>; + gpio-controller; + #gpio-cells = <2>; + interrupts = <12 IRQ_TYPE_LEVEL_LOW>; + interrupt-parent = <&gpiog>; + pinctrl-names = "default"; + pinctrl-0 = <&mcp23017_pins_a>; + interrupt-controller; + #interrupt-cells = <2>; + microchip,irq-mirror; + }; + typec@53 { compatible = "st,stm32g0-typec"; reg = <0x53>; -- 2.7.4