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The sifive gpio IP block supports up to 32 GPIOs. Reflect that in the interrupts property description and maxItems. Also add the standard ngpios property to describe the number of GPIOs available on the implementation. Also add the "canaan,k210-gpiohs" compatible string to indicate the use of this gpio controller in the Canaan Kendryte K210 SoC. If this compatible string is used, do not define the clocks property as required as the K210 SoC does not have a software controllable clock for the Sifive gpio IP block. Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
89 lines
1.7 KiB
YAML
89 lines
1.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpio/sifive,gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SiFive GPIO controller
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maintainers:
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- Yash Shah <yash.shah@sifive.com>
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- Paul Walmsley <paul.walmsley@sifive.com>
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properties:
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compatible:
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items:
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- enum:
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- sifive,fu540-c000-gpio
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- sifive,fu740-c000-gpio
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- canaan,k210-gpiohs
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- const: sifive,gpio0
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reg:
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maxItems: 1
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interrupts:
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description:
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Interrupt mapping, one per GPIO. Maximum 32 GPIOs.
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minItems: 1
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maxItems: 32
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interrupt-controller: true
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"#interrupt-cells":
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const: 2
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clocks:
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maxItems: 1
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"#gpio-cells":
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const: 2
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ngpios:
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description:
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The number of GPIOs available on the controller implementation.
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It is 16 for the SiFive SoCs and 32 for the Canaan K210.
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minimum: 1
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maximum: 32
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default: 16
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gpio-controller: true
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-controller
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- "#interrupt-cells"
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- "#gpio-cells"
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- gpio-controller
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if:
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properties:
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compatible:
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contains:
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enum:
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- sifive,fu540-c000-gpio
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- sifive,fu740-c000-gpio
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then:
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required:
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- clocks
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/sifive-fu540-prci.h>
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gpio@10060000 {
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compatible = "sifive,fu540-c000-gpio", "sifive,gpio0";
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interrupt-parent = <&plic>;
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interrupts = <7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22>;
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reg = <0x10060000 0x1000>;
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clocks = <&tlclk PRCI_CLK_TLCLK>;
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <2>;
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};
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...
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