[PATCH 2/2] ARM: dts: stm32: add mcp23017 IO expander on I2C1 on stm32mp135f-dk
Alexandre TORGUE
alexandre.torgue at foss.st.com
Thu Nov 17 00:39:06 PST 2022
Hi Amélie
On 10/24/22 11:46, Amelie Delaunay wrote:
> 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 <amelie.delaunay at foss.st.com>
> ---
> 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 a87ab067c955..d5fc6462ba33 100644
> --- a/arch/arm/boot/dts/stm32mp135f-dk.dts
> +++ b/arch/arm/boot/dts/stm32mp135f-dk.dts
> @@ -112,6 +112,20 @@ &i2c1 {
> /* spare dmas for other usage */
> /delete-property/dmas;
> /delete-property/dma-names;
> +
> + mcp23017: pinctrl at 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;
> + };
> };
>
> &i2c5 {
Both patches applied on stm32-next.
thanks
Alex
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