From: "Marek Behún" <kabel@kernel.org>
To: "Gregory CLEMENT" <gregory.clement@bootlin.com>,
"Arnd Bergmann" <arnd@arndb.de>,
soc@kernel.org, arm@kernel.org,
"Andy Shevchenko" <andy@kernel.org>,
"Hans de Goede" <hdegoede@redhat.com>,
"Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Cc: "Marek Behún" <kabel@kernel.org>, "Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
devicetree@vger.kernel.org,
"Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>,
"Conor Dooley" <conor.dooley@microchip.com>
Subject: [PATCH v9 1/9] dt-bindings: firmware: add cznic,turris-omnia-mcu binding
Date: Wed, 8 May 2024 12:31:10 +0200 [thread overview]
Message-ID: <20240508103118.23345-2-kabel@kernel.org> (raw)
In-Reply-To: <20240508103118.23345-1-kabel@kernel.org>
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 <kabel@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
---
.../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
diff --git a/Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml b/Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
new file mode 100644
index 000000000000..af9249695ef5
--- /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 <kabel@kernel.org>
+
+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 <dt-bindings/interrupt-controller/irq.h>
+
+ 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>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index ec0284125e8f..aba40663f3f8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2143,6 +2143,7 @@ F: Documentation/ABI/testing/sysfs-bus-moxtet-devices
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
--
2.43.2
next prev parent reply other threads:[~2024-05-08 10:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 10:31 [PATCH v9 0/9] Turris Omnia MCU driver Marek Behún
2024-05-08 10:31 ` Marek Behún [this message]
2024-05-08 10:31 ` [PATCH v9 8/9] ARM: dts: turris-omnia: Add MCU system-controller node Marek Behún
2024-05-08 10:31 ` [PATCH v9 9/9] ARM: dts: turris-omnia: Add GPIO key node for front button Marek Behún
2024-05-08 11:17 ` [PATCH v9 0/9] Turris Omnia MCU driver Andy Shevchenko
2024-05-08 17:50 ` Marek Behún
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