diff options
Diffstat (limited to 'target/linux/realtek/patches-5.10/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch')
| -rw-r--r-- | target/linux/realtek/patches-5.10/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/realtek/patches-5.10/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch b/target/linux/realtek/patches-5.10/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch new file mode 100644 index 0000000000..111591c640 --- /dev/null +++ b/target/linux/realtek/patches-5.10/001-5.13-dt-bindings-gpio-binding-for-realtek-otto-gpio.patch @@ -0,0 +1,109 @@ +From a362c0ce64866939c3daa17c76943cfed555b065 Mon Sep 17 00:00:00 2001 +From: Sander Vanheule <sander@svanheule.net> +Date: Tue, 30 Mar 2021 19:48:42 +0200 +Subject: dt-bindings: gpio: Binding for Realtek Otto GPIO + +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> +Reviewed-by: Rob Herring <robh@kernel.org> +Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> +--- + .../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 0000000000000..100f20cebd76a +--- /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>; ++ }; ++ ++... +-- +cgit 1.2.3-1.el7 + |