From: Sander Vanheule <sander@svanheule.net>
To: devicetree@vger.kernel.org, linux-gpio@vger.kernel.org
Cc: bert@biot.com, bgolaszewski@baylibre.com,
linus.walleij@linaro.org, linux-kernel@vger.kernel.org,
maz@kernel.org, robh+dt@kernel.org, tglx@linutronix.de,
Sander Vanheule <sander@svanheule.net>
Subject: [PATCH v3 1/2] dt-bindings: gpio: Binding for Realtek Otto GPIO
Date: Wed, 24 Mar 2021 22:22:40 +0100 [thread overview]
Message-ID: <cda4ad68a031b60d407629e9232df495d3e260c2.1616620884.git.sander@svanheule.net> (raw)
In-Reply-To: <cover.1616620884.git.sander@svanheule.net>
Add a binding description for Realtek's GPIO controller found on several
of their MIPS-based SoCs (codenamed Otto), such as the RTL838x and
RTL839x series of switch SoCs.
A fallback binding 'realtek,otto-gpio' is provided for cases where the
actual port ordering is not known yet, and enabling the interrupt
controller may result in uncaught interrupts.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
---
.../bindings/gpio/realtek,otto-gpio.yaml | 78 +++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml
diff --git a/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml b/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml
new file mode 100644
index 000000000000..100f20cebd76
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Realtek Otto GPIO controller
+
+maintainers:
+ - Sander Vanheule <sander@svanheule.net>
+ - Bert Vermeulen <bert@biot.com>
+
+description: |
+ Realtek's GPIO controller on their MIPS switch SoCs (Otto platform) consists
+ of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts.
+ Each bank's interrupts are cascased into one interrupt line on the parent
+ interrupt controller, if provided.
+ This binding allows defining a single bank in the devicetree. The interrupt
+ controller is not supported on the fallback compatible name, which only
+ allows for GPIO port use.
+
+properties:
+ $nodename:
+ pattern: "^gpio@[0-9a-f]+$"
+
+ compatible:
+ items:
+ - enum:
+ - realtek,rtl8380-gpio
+ - realtek,rtl8390-gpio
+ - const: realtek,otto-gpio
+
+ reg:
+ maxItems: 1
+
+ "#gpio-cells":
+ const: 2
+
+ gpio-controller: true
+
+ ngpios:
+ minimum: 1
+ maximum: 32
+
+ interrupt-controller: true
+
+ "#interrupt-cells":
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - "#gpio-cells"
+ - gpio-controller
+
+additionalProperties: false
+
+dependencies:
+ interrupt-controller: [ interrupts ]
+
+examples:
+ - |
+ gpio@3500 {
+ compatible = "realtek,rtl8380-gpio", "realtek,otto-gpio";
+ reg = <0x3500 0x1c>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ ngpios = <24>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-parent = <&rtlintc>;
+ interrupts = <23>;
+ };
+
+...
--
2.30.2
next prev parent reply other threads:[~2021-03-24 21:24 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 8:23 [PATCH 0/2] Add Realtek Otto GPIO support Sander Vanheule
2021-03-15 8:23 ` [PATCH 1/2] dt-bindings: gpio: Binding for Realtek Otto GPIO Sander Vanheule
2021-03-15 15:01 ` Linus Walleij
2021-03-15 8:23 ` [PATCH 2/2] gpio: Add Realtek Otto GPIO support Sander Vanheule
2021-03-15 15:10 ` Linus Walleij
2021-03-15 19:09 ` Sander Vanheule
2021-03-15 19:08 ` [PATCH v2 0/2] " Sander Vanheule
2021-03-15 19:08 ` [PATCH v2 1/2] dt-bindings: gpio: Binding for Realtek Otto GPIO Sander Vanheule
2021-03-24 18:29 ` Rob Herring
2021-03-15 19:08 ` [PATCH v2 2/2] gpio: Add Realtek Otto GPIO support Sander Vanheule
2021-03-17 13:08 ` Andy Shevchenko
2021-03-19 15:51 ` Sander Vanheule
2021-03-19 17:57 ` Andy Shevchenko
2021-03-19 21:20 ` Sander Vanheule
2021-03-19 21:24 ` Andy Shevchenko
2021-03-19 21:48 ` Sander Vanheule
2021-03-22 13:16 ` Andy Shevchenko
2021-03-24 21:22 ` [PATCH v3 0/2] " Sander Vanheule
2021-03-24 21:22 ` Sander Vanheule [this message]
2021-03-24 21:22 ` [PATCH v3 2/2] gpio: " Sander Vanheule
2021-03-24 21:29 ` Sander Vanheule
2021-03-26 12:03 ` [PATCH v4 0/2] " Sander Vanheule
2021-03-26 12:03 ` [PATCH v4 1/2] dt-bindings: gpio: Binding for Realtek Otto GPIO Sander Vanheule
2021-03-27 18:16 ` Rob Herring
2021-03-26 12:03 ` [PATCH v4 2/2] gpio: Add Realtek Otto GPIO support Sander Vanheule
2021-03-26 18:19 ` Andy Shevchenko
2021-03-26 21:11 ` Sander Vanheule
2021-03-29 10:26 ` Andy Shevchenko
2021-03-29 17:28 ` Sander Vanheule
2021-03-30 10:14 ` Andy Shevchenko
2021-03-30 15:26 ` [PATCH v5 0/2] " Sander Vanheule
2021-03-30 15:26 ` [PATCH v5 1/2] dt-bindings: gpio: Binding for Realtek Otto GPIO Sander Vanheule
2021-03-30 15:26 ` [PATCH v5 2/2] gpio: Add Realtek Otto GPIO support Sander Vanheule
2021-03-30 16:43 ` Andy Shevchenko
2021-03-30 17:48 ` [PATCH v6 0/2] " Sander Vanheule
2021-03-30 17:48 ` [PATCH v6 1/2] dt-bindings: gpio: Binding for Realtek Otto GPIO Sander Vanheule
2021-03-30 17:48 ` [PATCH v6 2/2] gpio: Add Realtek Otto GPIO support Sander Vanheule
2021-03-31 7:49 ` [PATCH v6 0/2] " Bartosz Golaszewski
2021-03-31 8:11 ` Sander Vanheule
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