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Message-ID: <20250714202905.3012386-1-robh@kernel.org>
Date: Mon, 14 Jul 2025 15:29:04 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Dinh Nguyen <dinguyen@...nel.org>,
Marek Vasut <marex@...x.de>,
Mathieu Malaterre <malat@...ian.org>,
Hock Loh <thloh@...era.com>
Cc: linux-gpio@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: gpio: Convert altr,pio-1.0 to DT schema
Convert the altr,pio-1.0 binding to DT schema format. It's a
straight forward conversion.
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
.../bindings/gpio/altr-pio-1.0.yaml | 75 +++++++++++++++++++
.../devicetree/bindings/gpio/gpio-altera.txt | 44 -----------
2 files changed, 75 insertions(+), 44 deletions(-)
create mode 100644 Documentation/devicetree/bindings/gpio/altr-pio-1.0.yaml
delete mode 100644 Documentation/devicetree/bindings/gpio/gpio-altera.txt
diff --git a/Documentation/devicetree/bindings/gpio/altr-pio-1.0.yaml b/Documentation/devicetree/bindings/gpio/altr-pio-1.0.yaml
new file mode 100644
index 000000000000..18afed324198
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/altr-pio-1.0.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/altr-pio-1.0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Altera GPIO controller
+
+maintainers:
+ - Dinh Nguyen <dinguyen@...nel.org>
+ - Marek Vasut <marex@...x.de>
+ - Mathieu Malaterre <malat@...ian.org>
+ - Tien Hock Loh <thloh@...era.com>
+
+properties:
+ compatible:
+ const: altr,pio-1.0
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+ description:
+ First cell is the GPIO offset number. Second cell is reserved and
+ currently unused.
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+ altr,ngpio:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Width of the GPIO bank.
+ default: 32
+
+ altr,interrupt-type:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: >
+ Specifies the interrupt trigger type synthesized by hardware.
+ Values defined in <dt-bindings/interrupt-controller/irq.h>.
+ enum: [1, 2, 3, 4]
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+ - interrupts
+ - interrupt-controller
+ - "#interrupt-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ gpio@...00000 {
+ compatible = "altr,pio-1.0";
+ reg = <0xff200000 0x10>;
+ interrupts = <45 4>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ altr,ngpio = <32>;
+ altr,interrupt-type = <IRQ_TYPE_EDGE_RISING>;
+ };
diff --git a/Documentation/devicetree/bindings/gpio/gpio-altera.txt b/Documentation/devicetree/bindings/gpio/gpio-altera.txt
deleted file mode 100644
index 2a80e272cd66..000000000000
--- a/Documentation/devicetree/bindings/gpio/gpio-altera.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-Altera GPIO controller bindings
-
-Required properties:
-- compatible:
- - "altr,pio-1.0"
-- reg: Physical base address and length of the controller's registers.
-- #gpio-cells : Should be 2
- - The first cell is the gpio offset number.
- - The second cell is reserved and is currently unused.
-- gpio-controller : Marks the device node as a GPIO controller.
-- interrupt-controller: Mark the device node as an interrupt controller
-- #interrupt-cells : Should be 2. The interrupt type is fixed in the hardware.
- - The first cell is the GPIO offset number within the GPIO controller.
- - The second cell is the interrupt trigger type and level flags.
-- interrupts: Specify the interrupt.
-- altr,interrupt-type: Specifies the interrupt trigger type the GPIO
- hardware is synthesized. This field is required if the Altera GPIO controller
- used has IRQ enabled as the interrupt type is not software controlled,
- but hardware synthesized. Required if GPIO is used as an interrupt
- controller. The value is defined in <dt-bindings/interrupt-controller/irq.h>
- Only the following flags are supported:
- IRQ_TYPE_EDGE_RISING
- IRQ_TYPE_EDGE_FALLING
- IRQ_TYPE_EDGE_BOTH
- IRQ_TYPE_LEVEL_HIGH
-
-Optional properties:
-- altr,ngpio: Width of the GPIO bank. This defines how many pins the
- GPIO device has. Ranges between 1-32. Optional and defaults to 32 if not
- specified.
-
-Example:
-
-gpio_altr: gpio@...00000 {
- compatible = "altr,pio-1.0";
- reg = <0xff200000 0x10>;
- interrupts = <0 45 4>;
- altr,ngpio = <32>;
- altr,interrupt-type = <IRQ_TYPE_EDGE_RISING>;
- #gpio-cells = <2>;
- gpio-controller;
- #interrupt-cells = <2>;
- interrupt-controller;
-};
--
2.47.2
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