Marek Behún <kabel@xxxxxxxxxx> writes:
> Turris Omnia's MCU provides various features that can be configured over
> I2C at address 0x2a. Add device-tree node.
>
> This does not carry a Fixes tag - we do not want this to get backported
> to stable kernels for the following reason: U-Boot since v2022.10
> inserts a phy-reset-gpio property into the WAN ethernet node pointing to
> the MCU node if it finds the MCU node with a cznic,turris-omnia-mcu
> compatible. Thus if this change got backported to a stable kernel, the
> WAN interface driver would defer probe indefinitely (since it would wait
> for the turris-omnia-mcu driver which would not be present).
>
> Signed-off-by: Marek Behún <kabel@xxxxxxxxxx>
Applied on mvebu/dt
Thanks,
Gregory
> ---
> .../dts/marvell/armada-385-turris-omnia.dts | 22 ++++++++++++++++++-
> 1 file changed, 21 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts b/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts
> index 7b755bb4e4e7..59079d63fe27 100644
> --- a/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts
> +++ b/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts
> @@ -218,7 +218,22 @@ i2c@0 {
> #size-cells = <0>;
> reg = <0>;
>
> - /* STM32F0 command interface at address 0x2a */
> + mcu: system-controller@2a {
> + compatible = "cznic,turris-omnia-mcu";
> + reg = <0x2a>;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&mcu_pins>;
> +
> + interrupt-parent = <&gpio1>;
> + interrupts = <11 IRQ_TYPE_NONE>;
> +
> + gpio-controller;
> + #gpio-cells = <3>;
> +
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
>
> led-controller@2b {
> compatible = "cznic,turris-omnia-leds";
> @@ -501,6 +516,11 @@ fixed-link {
> };
>
> &pinctrl {
> + mcu_pins: mcu-pins {
> + marvell,pins = "mpp43";
> + marvell,function = "gpio";
> + };
> +
> pcawan_pins: pcawan-pins {
> marvell,pins = "mpp46";
> marvell,function = "gpio";
> --
> 2.44.2
