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Diffstat (limited to 'Documentation/devicetree/bindings/gpio/spacemit,k1-gpio.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/spacemit,k1-gpio.yaml | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/spacemit,k1-gpio.yaml b/Documentation/devicetree/bindings/gpio/spacemit,k1-gpio.yaml new file mode 100644 index 000000000000..ec0232e72c71 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/spacemit,k1-gpio.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/spacemit,k1-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SpacemiT K1 GPIO controller + +maintainers: + - Yixun Lan <dlan@gentoo.org> + +description: + The controller's registers are organized as sets of eight 32-bit + registers with each set of port controlling 32 pins. A single + interrupt line is shared for all of the pins by the controller. + +properties: + $nodename: + pattern: "^gpio@[0-9a-f]+$" + + compatible: + const: spacemit,k1-gpio + + reg: + maxItems: 1 + + clocks: + items: + - description: GPIO Core Clock + - description: GPIO Bus Clock + + clock-names: + items: + - const: core + - const: bus + + resets: + maxItems: 1 + + gpio-controller: true + + "#gpio-cells": + const: 3 + description: + The first two cells are the GPIO bank index and offset inside the bank, + the third cell should specify GPIO flag. + + gpio-ranges: true + + interrupts: + maxItems: 1 + + interrupt-controller: true + + "#interrupt-cells": + const: 3 + description: + The first two cells are the GPIO bank index and offset inside the bank, + the third cell should specify interrupt flag. The controller does not + support level interrupts, so flags of IRQ_TYPE_LEVEL_HIGH, + IRQ_TYPE_LEVEL_LOW should not be used. + Refer <dt-bindings/interrupt-controller/irq.h> for valid flags. + +required: + - compatible + - reg + - clocks + - clock-names + - gpio-controller + - "#gpio-cells" + - interrupts + - interrupt-controller + - "#interrupt-cells" + - gpio-ranges + +additionalProperties: false + +examples: + - | + gpio@d4019000 { + compatible = "spacemit,k1-gpio"; + reg = <0xd4019000 0x800>; + clocks =<&ccu 9>, <&ccu 61>; + clock-names = "core", "bus"; + gpio-controller; + #gpio-cells = <3>; + interrupts = <58>; + interrupt-controller; + interrupt-parent = <&plic>; + #interrupt-cells = <3>; + gpio-ranges = <&pinctrl 0 0 0 32>, + <&pinctrl 1 0 32 32>, + <&pinctrl 2 0 64 32>, + <&pinctrl 3 0 96 32>; + }; +... |