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This backports patches dt-bindings: firmware: add cznic,turris-omnia-mcu binding platform: cznic: Add preliminary support for Turris Omnia MCU platform: cznic: turris-omnia-mcu: Add support for MCU connected GPIOs platform: cznic: turris-omnia-mcu: Add support for poweroff and wakeup platform: cznic: turris-omnia-mcu: Add support for MCU watchdog platform: cznic: turris-omnia-mcu: Add support for MCU provided TRNG ARM: dts: turris-omnia: Add MCU system-controller node ARM: dts: turris-omnia: Add GPIO key node for front button platform: cznic: turris-omnia-mcu: Depend on OF platform: cznic: turris-omnia-mcu: Depend on WATCHDOG platform: cznic: turris-omnia-mcu: fix Kconfig dependencies that will be released in 6.11 into mvebu/patches-6.6. Signed-off-by: Marek Behún <kabel@kernel.org> Link: https://github.com/openwrt/openwrt/pull/13799 Signed-off-by: Robert Marko <robimarko@gmail.com>
126 lines
4.1 KiB
Diff
126 lines
4.1 KiB
Diff
From cdfed4d05780450817ef96567e2cd8d355ca9e70 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <kabel@kernel.org>
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Date: Mon, 1 Jul 2024 13:30:03 +0200
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Subject: [PATCH 01/11] dt-bindings: firmware: add cznic,turris-omnia-mcu
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binding
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Add binding for cznic,turris-omnia-mcu, the device-tree node
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representing the system-controller features provided by the MCU on the
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Turris Omnia router.
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Signed-off-by: Marek Behún <kabel@kernel.org>
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Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
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Reviewed-by: Andy Shevchenko <andy@kernel.org>
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Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Link: https://lore.kernel.org/r/20240701113010.16447-2-kabel@kernel.org
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Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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---
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.../firmware/cznic,turris-omnia-mcu.yaml | 86 +++++++++++++++++++
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MAINTAINERS | 1 +
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2 files changed, 87 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
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@@ -0,0 +1,86 @@
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+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/firmware/cznic,turris-omnia-mcu.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: CZ.NIC's Turris Omnia MCU
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+
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+maintainers:
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+ - Marek Behún <kabel@kernel.org>
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+
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+description:
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+ The MCU on Turris Omnia acts as a system controller providing additional
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+ GPIOs, interrupts, watchdog, system power off and wakeup configuration.
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+
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+properties:
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+ compatible:
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+ const: cznic,turris-omnia-mcu
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+
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+ reg:
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+ description: MCU I2C slave address
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+ maxItems: 1
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+
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+ interrupts:
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+ maxItems: 1
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+
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+ interrupt-controller: true
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+
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+ '#interrupt-cells':
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+ const: 2
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+ description: |
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+ The first cell specifies the interrupt number (0 to 63), the second cell
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+ specifies interrupt type (which can be one of IRQ_TYPE_EDGE_RISING,
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+ IRQ_TYPE_EDGE_FALLING or IRQ_TYPE_EDGE_BOTH).
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+ The interrupt numbers correspond sequentially to GPIO numbers, taking the
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+ GPIO banks into account:
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+ IRQ number GPIO bank GPIO pin within bank
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+ 0 - 15 0 0 - 15
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+ 16 - 47 1 0 - 31
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+ 48 - 63 2 0 - 15
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+ There are several exceptions:
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+ IRQ number meaning
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+ 11 LED panel brightness changed by button press
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+ 13 TRNG entropy ready
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+ 14 ECDSA message signature computation done
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+
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+ gpio-controller: true
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+
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+ '#gpio-cells':
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+ const: 3
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+ description:
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+ The first cell is bank number (0, 1 or 2), the second cell is pin number
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+ within the bank (0 to 15 for banks 0 and 2, 0 to 31 for bank 1), and the
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+ third cell specifies consumer flags.
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+
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+required:
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+ - compatible
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+ - reg
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+ - interrupts
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+ - interrupt-controller
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+ - gpio-controller
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+
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+additionalProperties: false
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+
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+examples:
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+ - |
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+ #include <dt-bindings/interrupt-controller/irq.h>
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+
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+ i2c {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ system-controller@2a {
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+ compatible = "cznic,turris-omnia-mcu";
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+ reg = <0x2a>;
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+
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+ interrupt-parent = <&gpio1>;
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+ interrupts = <11 IRQ_TYPE_NONE>;
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+
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+ gpio-controller;
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+ #gpio-cells = <3>;
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+
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+ interrupt-controller;
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+ #interrupt-cells = <2>;
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+ };
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+ };
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--- a/MAINTAINERS
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+++ b/MAINTAINERS
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@@ -2104,6 +2104,7 @@ F: Documentation/ABI/testing/sysfs-bus-m
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F: Documentation/ABI/testing/sysfs-firmware-turris-mox-rwtm
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F: Documentation/devicetree/bindings/bus/moxtet.txt
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F: Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
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+F: Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
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F: Documentation/devicetree/bindings/gpio/gpio-moxtet.txt
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F: Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml
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F: Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
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