github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-03 03:53:37 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ARM: dts: stm32: add mcp23017 IO expander on I2C1 on stm32mp135f-dk

Browse Source 
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@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
This commit is contained in:
Amelie Delaunay 2022-10-24 11:46:48 +02:00 committed by Alexandre Torgue
parent e1f15571c9
commit 6cc7137400
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
arch/arm/boot/dts/stm32mp135f-dk.dts
View File

@ -129,6 +129,20 @@ &i2c1 {
/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>;