summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml')
-rw-r--r--Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml110
1 files changed, 110 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml b/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml
new file mode 100644
index 0000000000..94b51749ee
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/nvidia,tegra20-gpio.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/gpio/nvidia,tegra20-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra GPIO Controller (Tegra20 - Tegra210)
+
+maintainers:
+ - Thierry Reding <thierry.reding@gmail.com>
+ - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - nvidia,tegra20-gpio
+ - nvidia,tegra30-gpio
+
+ - items:
+ - enum:
+ - nvidia,tegra114-gpio
+ - nvidia,tegra124-gpio
+ - nvidia,tegra210-gpio
+ - const: nvidia,tegra30-gpio
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ description: The interrupt outputs from the controller. For Tegra20,
+ there should be 7 interrupts specified, and for Tegra30, there should
+ be 8 interrupts specified.
+
+ "#gpio-cells":
+ description: The first cell is the pin number and the second cell is used
+ to specify the GPIO polarity (0 = active high, 1 = active low).
+ const: 2
+
+ gpio-controller: true
+
+ gpio-ranges:
+ maxItems: 1
+
+ "#interrupt-cells":
+ description: |
+ Should be 2. The first cell is the GPIO number. The second cell is
+ used to specify flags:
+
+ bits[3:0] trigger type and level flags:
+ 1 = low-to-high edge triggered.
+ 2 = high-to-low edge triggered.
+ 4 = active high level-sensitive.
+ 8 = active low level-sensitive.
+
+ Valid combinations are 1, 2, 3, 4, 8.
+ const: 2
+
+ interrupt-controller: true
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: nvidia,tegra30-gpio
+ then:
+ properties:
+ interrupts:
+ minItems: 8
+ maxItems: 8
+ else:
+ properties:
+ interrupts:
+ minItems: 7
+ maxItems: 7
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - "#gpio-cells"
+ - gpio-controller
+ - "#interrupt-cells"
+ - interrupt-controller
+
+additionalProperties:
+ type: object
+ required:
+ - gpio-hog
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ gpio: gpio@6000d000 {
+ compatible = "nvidia,tegra20-gpio";
+ reg = <0x6000d000 0x1000>;
+ interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ };