From: Petar Stepanovic <pstepanovic@axiado.com>
To: Petar Stepanovic <pstepanovic@axiado.com>,
Tzu-Hao Wei <twei@axiado.com>, Swark Yang <syang@axiado.com>,
Prasad Bolisetty <pbolisetty@axiado.com>,
Linus Walleij <linusw@kernel.org>,
Bartosz Golaszewski <brgl@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Harshit Shah <hshah@axiado.com>,
SriNavmani A <srinavmani@axiado.com>
Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] dt-bindings: gpio: add Axiado SGPIO controller
Date: Tue, 14 Apr 2026 06:48:32 -0700 [thread overview]
Message-ID: <20260414-axiado-ax3000-sgpio-controller-v1-1-b5c7e4c2e69b@axiado.com> (raw)
In-Reply-To: <20260414-axiado-ax3000-sgpio-controller-v1-0-b5c7e4c2e69b@axiado.com>
Add device tree binding for the Axiado SGPIO controller.
The SGPIO controller provides a serialized interface for
controlling multiple GPIO signals over a limited number of
physical lines. It supports configurable data direction and
interrupt handling.
The binding describes the properties required to instantiate
the controller and register it as a GPIO provider.
Signed-off-by: Petar Stepanovic <pstepanovic@axiado.com>
---
.../devicetree/bindings/gpio/axiado,sgpio.yaml | 98 ++++++++++++++++++++++
1 file changed, 98 insertions(+)
diff --git a/Documentation/devicetree/bindings/gpio/axiado,sgpio.yaml b/Documentation/devicetree/bindings/gpio/axiado,sgpio.yaml
new file mode 100644
index 000000000000..1533446d69f1
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/axiado,sgpio.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/axiado,sgpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Axiado SGPIO Controller
+
+maintainers:
+ - Petar Stepanovic <pstepanovic@axiado.com>
+ - SriNavmani A <srinavmani@axiado.com>
+ - Prasad Bolisetty <pbolisetty@axiado.com>
+
+description: |
+ The SGPIO controller provides a serialized interface for controlling
+ multiple GPIO signals over a limited number of physical lines.
+ It supports configurable data direction and interrupt handling.
+
+properties:
+ compatible:
+ enum:
+ - axiado,sgpio
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+
+ design-variant:
+ description: SGPIO design variant size in bits (e.g. 128 or 512).
+ enum: [128, 512]
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ ngpios:
+ description: The number of gpios this controller has.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ bus-frequency:
+ description: The SGPIO shift clock frequency in Hz.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ apb-frequency:
+ description: The APB bus frequency in Hz.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ dout-init:
+ description: Initial values for the dout registers.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 4
+ maxItems: 4
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - '#gpio-cells'
+ - interrupts
+ - interrupt-controller
+ - '#interrupt-cells'
+ - design-variant
+ - ngpios
+ - bus-frequency
+ - apb-frequency
+ - dout-init
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ sgpio@a000 {
+ compatible = "axiado,sgpio";
+ reg = <0xa000 0x800>;
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-parent = <&gpio6>;
+ interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
+ design-variant = <128>;
+ ngpios = <128>;
+ bus-frequency = <1000000>;
+ apb-frequency = <100000000>;
+ dout-init = <0x00300000 0x00006371 0x00003800 0x00000000>;
+ };
--
2.34.1
next prev parent reply other threads:[~2026-04-14 13:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-14 13:48 [PATCH 0/3] Subject: [PATCH 0/3] gpio: add support for Axiado SGPIO controller Petar Stepanovic
2026-04-14 13:48 ` Petar Stepanovic [this message]
2026-04-14 14:06 ` [PATCH 1/3] dt-bindings: gpio: add " Krzysztof Kozlowski
2026-04-24 7:26 ` Linus Walleij
2026-05-07 8:05 ` Petar Stepanovic
2026-05-07 9:44 ` Linus Walleij
2026-05-08 7:57 ` Petar Stepanovic
2026-05-11 8:36 ` Linus Walleij
2026-05-13 8:59 ` Petar Stepanovic
2026-05-23 9:13 ` Linus Walleij
2026-04-14 13:48 ` [PATCH 2/3] gpio: axiado: add SGPIO controller support Petar Stepanovic
2026-04-14 14:04 ` Krzysztof Kozlowski
2026-04-20 9:25 ` Bartosz Golaszewski
2026-04-24 7:44 ` Linus Walleij
2026-04-14 13:48 ` [PATCH 3/3] MAINTAINERS: add Axiado SGPIO controller Petar Stepanovic
2026-04-14 14:12 ` Krzysztof Kozlowski
2026-04-22 1:48 ` Prasad Bolisetty
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