From cdfed4d05780450817ef96567e2cd8d355ca9e70 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marek=20Beh=C3=BAn?= Date: Mon, 1 Jul 2024 13:30:03 +0200 Subject: [PATCH 01/11] dt-bindings: firmware: add cznic,turris-omnia-mcu binding MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add binding for cznic,turris-omnia-mcu, the device-tree node representing the system-controller features provided by the MCU on the Turris Omnia router. Signed-off-by: Marek Behún Reviewed-by: Krzysztof Kozlowski Reviewed-by: Conor Dooley Reviewed-by: Andy Shevchenko Acked-by: Bartosz Golaszewski Link: https://lore.kernel.org/r/20240701113010.16447-2-kabel@kernel.org Signed-off-by: Arnd Bergmann --- .../firmware/cznic,turris-omnia-mcu.yaml | 86 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 87 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml @@ -0,0 +1,86 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/firmware/cznic,turris-omnia-mcu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: CZ.NIC's Turris Omnia MCU + +maintainers: + - Marek Behún + +description: + The MCU on Turris Omnia acts as a system controller providing additional + GPIOs, interrupts, watchdog, system power off and wakeup configuration. + +properties: + compatible: + const: cznic,turris-omnia-mcu + + reg: + description: MCU I2C slave address + maxItems: 1 + + interrupts: + maxItems: 1 + + interrupt-controller: true + + '#interrupt-cells': + const: 2 + description: | + The first cell specifies the interrupt number (0 to 63), the second cell + specifies interrupt type (which can be one of IRQ_TYPE_EDGE_RISING, + IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH). + The interrupt numbers correspond sequentially to GPIO numbers, taking the + GPIO banks into account: + IRQ number GPIO bank GPIO pin within bank + 0 - 15 0 0 - 15 + 16 - 47 1 0 - 31 + 48 - 63 2 0 - 15 + There are several exceptions: + IRQ number meaning + 11 LED panel brightness changed by button press + 13 TRNG entropy ready + 14 ECDSA message signature computation done + + gpio-controller: true + + '#gpio-cells': + const: 3 + description: + The first cell is bank number (0, 1 or 2), the second cell is pin number + within the bank (0 to 15 for banks 0 and 2, 0 to 31 for bank 1), and the + third cell specifies consumer flags. + +required: + - compatible + - reg + - interrupts + - interrupt-controller + - gpio-controller + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + system-controller@2a { + compatible = "cznic,turris-omnia-mcu"; + reg = <0x2a>; + + interrupt-parent = <&gpio1>; + interrupts = <11 IRQ_TYPE_NONE>; + + gpio-controller; + #gpio-cells = <3>; + + interrupt-controller; + #interrupt-cells = <2>; + }; + }; --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2104,6 +2104,7 @@ F: Documentation/ABI/testing/sysfs-bus-m F: Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm F: Documentation/devicetree/bindings/bus/moxtet.txt F: Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt +F: Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml F: Documentation/devicetree/bindings/gpio/gpio-moxtet.txt F: Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml F: Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt