At i2c address 0x2a is MCU command interface which provides access to GPIOs connected to Turris Omnia MCU. So define mcu node in Turris Omnia DTS file. Signed-off-by: Pali Rohár <pali@xxxxxxxxxx> --- Same change was already sent to U-Boot project together with driver. As Turris Omnia DTS file is shared between Linux kernel U-Boot, I'm sending this change also in Linux. There is a plan to write also Linux driver for Turris Omnia MCU, like there is already in U-Boot. https://source.denx.de/u-boot/u-boot/-/commit/832738974806e6264a3d0ac2aaa92d0f662fd128 https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/gpio/turris_omnia_mcu.c --- arch/arm/boot/dts/armada-385-turris-omnia.dts | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/armada-385-turris-omnia.dts b/arch/arm/boot/dts/armada-385-turris-omnia.dts index f4878df39753..f655e9229d68 100644 --- a/arch/arm/boot/dts/armada-385-turris-omnia.dts +++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts @@ -184,7 +184,13 @@ #size-cells = <0>; reg = <0>; - /* STM32F0 command interface at address 0x2a */ + /* MCU command i2c API */ + mcu: mcu@2a { + compatible = "cznic,turris-omnia-mcu"; + reg = <0x2a>; + gpio-controller; + #gpio-cells = <3>; + }; led-controller@2b { compatible = "cznic,turris-omnia-leds"; -- 2.20.1
