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dt-bindings: gpio: Convert mrvl-gpio to json-schema
This converts the mrvl-gpio binding to DT schema format using json-schema. Various fixes were done during the conversion, such as adding more properties that are in fact mandatory or extending the examples to include child nodes with extra GPIO blocks. The compatible strings are a mess. It is not clear why so many of them are needed; the driver doesn't really seem to differentiate between the models. Some of them, like marvell,pxa93x-gpio and marvell,pxa1928-gpio are not used at all, so it's not known how many interrupts they utilize. On the other hand, mrvl,pxa-gpio has been seen in the tree, but it doesn't end up in any actual DTB file. In any case -- the schema merely copies whatever was in the original binding document, so it's hopefully no more wrong that the original. Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Link: https://lore.kernel.org/r/20200616223353.993567-2-lkundrak@v3.sk Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Lubomir Rintel
Rob Herring
parent
afed56d0ff
commit
f882846c01
2 changed files with 173 additions and 48 deletions
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@ -1,48 +0,0 @@
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* Marvell PXA GPIO controller
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Required properties:
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- compatible : Should be "intel,pxa25x-gpio", "intel,pxa26x-gpio",
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"intel,pxa27x-gpio", "intel,pxa3xx-gpio",
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"marvell,pxa93x-gpio", "marvell,mmp-gpio",
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"marvell,mmp2-gpio" or marvell,pxa1928-gpio.
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- reg : Address and length of the register set for the device
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- interrupts : Should be the port interrupt shared by all gpio pins.
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There're three gpio interrupts in arch-pxa, and they're gpio0,
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gpio1 and gpio_mux. There're only one gpio interrupt in arch-mmp,
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gpio_mux.
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- interrupt-names : Should be the names of irq resources. Each interrupt
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uses its own interrupt name, so there should be as many interrupt names
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as referenced interrupts.
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- interrupt-controller : Identifies the node as an interrupt controller.
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- #interrupt-cells: Specifies the number of cells needed to encode an
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interrupt source.
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- gpio-controller : Marks the device node as a gpio controller.
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- #gpio-cells : Should be two. The first cell is the pin number and
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the second cell is used to specify flags. See gpio.txt for possible
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values.
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Example for a MMP platform:
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gpio: gpio@d4019000 {
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compatible = "marvell,mmp-gpio";
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reg = <0xd4019000 0x1000>;
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interrupts = <49>;
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interrupt-names = "gpio_mux";
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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 = <1>;
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};
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Example for a PXA3xx platform:
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gpio: gpio@40e00000 {
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compatible = "intel,pxa3xx-gpio";
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reg = <0x40e00000 0x10000>;
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interrupt-names = "gpio0", "gpio1", "gpio_mux";
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interrupts = <8 9 10>;
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gpio-controller;
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#gpio-cells = <0x2>;
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interrupt-controller;
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#interrupt-cells = <0x2>;
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};
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173
Documentation/devicetree/bindings/gpio/mrvl-gpio.yaml
Normal file
173
Documentation/devicetree/bindings/gpio/mrvl-gpio.yaml
Normal file
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@ -0,0 +1,173 @@
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpio/mrvl-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Marvell PXA GPIO controller
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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- Bartosz Golaszewski <bgolaszewski@baylibre.com>
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- Rob Herring <robh+dt@kernel.org>
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allOf:
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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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- intel,pxa25x-gpio
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- intel,pxa26x-gpio
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- intel,pxa27x-gpio
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- intel,pxa3xx-gpio
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then:
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properties:
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interrupts:
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minItems: 3
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maxItems: 3
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interrupt-names:
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items:
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- const: gpio0
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- const: gpio1
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- const: gpio_mux
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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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- marvell,mmp-gpio
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- marvell,mmp2-gpio
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then:
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properties:
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interrupts:
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maxItems: 1
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interrupt-names:
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items:
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- const: gpio_mux
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properties:
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$nodename:
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pattern: '^gpio@[0-9a-f]+$'
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compatible:
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enum:
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- intel,pxa25x-gpio
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- intel,pxa26x-gpio
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- intel,pxa27x-gpio
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- intel,pxa3xx-gpio
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- marvell,mmp-gpio
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- marvell,mmp2-gpio
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- marvell,pxa93x-gpio
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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resets:
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maxItems: 1
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ranges: true
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'#address-cells':
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const: 1
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'#size-cells':
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const: 1
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gpio-controller: true
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'#gpio-cells':
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const: 2
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gpio-ranges:
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maxItems: 1
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interrupts: true
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interrupt-names: true
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interrupt-controller: true
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'#interrupt-cells':
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const: 2
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patternProperties:
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'^gpio@[0-9a-f]*$':
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type: object
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properties:
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reg:
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maxItems: 1
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required:
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- reg
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additionalProperties: false
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required:
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- compatible
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- '#address-cells'
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- '#size-cells'
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- reg
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- gpio-controller
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- '#gpio-cells'
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- interrupts
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- interrupt-names
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- interrupt-controller
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- '#interrupt-cells'
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/pxa-clock.h>
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gpio@40e00000 {
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compatible = "intel,pxa3xx-gpio";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0x40e00000 0x10000>;
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gpio-controller;
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#gpio-cells = <2>;
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interrupts = <8>, <9>, <10>;
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interrupt-names = "gpio0", "gpio1", "gpio_mux";
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clocks = <&clks CLK_GPIO>;
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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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#include <dt-bindings/clock/marvell,pxa910.h>
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gpio@d4019000 {
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compatible = "marvell,mmp-gpio";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0xd4019000 0x1000>;
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gpio-controller;
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#gpio-cells = <2>;
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interrupts = <49>;
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interrupt-names = "gpio_mux";
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clocks = <&soc_clocks PXA910_CLK_GPIO>;
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resets = <&soc_clocks PXA910_CLK_GPIO>;
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interrupt-controller;
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#interrupt-cells = <2>;
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ranges;
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gpio@d4019000 {
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reg = <0xd4019000 0x4>;
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};
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gpio@d4019004 {
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reg = <0xd4019004 0x4>;
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};
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gpio@d4019008 {
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reg = <0xd4019008 0x4>;
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};
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gpio@d4019100 {
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reg = <0xd4019100 0x4>;
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};
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};
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...
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