diff options
| author | Marek Behún <kabel@kernel.org> | 2024-07-01 13:30:09 +0200 |
|---|---|---|
| committer | Gregory CLEMENT <gregory.clement@bootlin.com> | 2024-07-05 14:45:46 +0200 |
| commit | cfa65ef7c84adafcbd1f9c7ba349812e1692d0a2 (patch) | |
| tree | 6f3bdbfe68e6a6d64fa81ef2964bc1dfa6e0bec1 /arch/arm | |
| parent | 5b3566a75f2d749fbfef5fb4f5acfd1754333252 (diff) | |
ARM: dts: turris-omnia: Add MCU system-controller node
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@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts | 22 |
1 files changed, 21 insertions, 1 deletions
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 @@ #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 @@ }; &pinctrl { + mcu_pins: mcu-pins { + marvell,pins = "mpp43"; + marvell,function = "gpio"; + }; + pcawan_pins: pcawan-pins { marvell,pins = "mpp46"; marvell,function = "gpio"; |