mirror of https://gitee.com/openkylin/linux.git
dt-bindings: i2c: mv64xxx: Add YAML schemas
Switch the DT binding to a YAML schema to enable the DT validation. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Maxime Ripard
Wolfram Sang
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* Marvell MV64XXX I2C controller
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Required properties :
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- reg : Offset and length of the register set for the device
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- compatible : Should be either:
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- "allwinner,sun4i-a10-i2c"
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- "allwinner,sun6i-a31-i2c"
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- "marvell,mv64xxx-i2c"
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- "marvell,mv78230-i2c"
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- "marvell,mv78230-a0-i2c"
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* Note: Only use "marvell,mv78230-a0-i2c" for a
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very rare, initial version of the SoC which
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had broken offload support. Linux
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auto-detects this and sets it appropriately.
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- interrupts : The interrupt number
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Optional properties :
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- clock-frequency : Desired I2C bus clock frequency in Hz. If not set the
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default frequency is 100kHz
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- resets : phandle to the parent reset controller. Mandatory
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whenever you're using the "allwinner,sun6i-a31-i2c"
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compatible.
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- clocks: : pointers to the reference clocks for this device, the
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first one is the one used for the clock on the i2c bus,
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the second one is the clock used to acces the registers
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of the controller
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- clock-names : names of used clocks, mandatory if the second clock is
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used, the name must be "core", and "reg" (the latter is
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only for Armada 7K/8K).
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Examples:
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i2c@11000 {
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compatible = "marvell,mv64xxx-i2c";
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reg = <0x11000 0x20>;
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interrupts = <29>;
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clock-frequency = <100000>;
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};
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For the Armada XP:
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i2c@11000 {
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compatible = "marvell,mv78230-i2c", "marvell,mv64xxx-i2c";
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reg = <0x11000 0x100>;
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interrupts = <29>;
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clock-frequency = <100000>;
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};
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For the Armada 7040:
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i2c@701000 {
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compatible = "marvell,mv78230-i2c";
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reg = <0x701000 0x20>;
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interrupts = <29>;
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clock-frequency = <100000>;
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clock-names = "core", "reg";
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clocks = <&core_clock>, <®_clock>;
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};
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@ -0,0 +1,124 @@
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/i2c/marvell,mv64xxx-i2c.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Marvell MV64XXX I2C Controller Device Tree Bindings
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maintainers:
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- Gregory CLEMENT <gregory.clement@bootlin.com>
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properties:
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compatible:
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oneOf:
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- const: allwinner,sun4i-a10-i2c
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- items:
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- const: allwinner,sun7i-a20-i2c
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- const: allwinner,sun4i-a10-i2c
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- const: allwinner,sun6i-a31-i2c
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- items:
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- const: allwinner,sun8i-a23-i2c
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- const: allwinner,sun6i-a31-i2c
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- items:
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- const: allwinner,sun8i-a83t-i2c
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- const: allwinner,sun6i-a31-i2c
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- items:
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- const: allwinner,sun50i-a64-i2c
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- const: allwinner,sun6i-a31-i2c
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- const: marvell,mv64xxx-i2c
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- const: marvell,mv78230-i2c
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- const: marvell,mv78230-a0-i2c
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description:
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Only use "marvell,mv78230-a0-i2c" for a very rare, initial
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version of the SoC which had broken offload support. Linux
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auto-detects this and sets it appropriately.
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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minItems: 1
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maxItems: 2
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items:
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- description: Reference clock for the I2C bus
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- description: Bus clock (Only for Armada 7K/8K)
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clock-names:
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minItems: 1
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maxItems: 2
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items:
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- const: core
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- const: reg
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description:
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Mandatory if two clocks are used (only for Armada 7k and 8k).
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resets:
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maxItems: 1
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required:
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- compatible
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- reg
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- interrupts
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allOf:
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- $ref: /schemas/i2c/i2c-controller.yaml#
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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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- allwinner,sun4i-a10-i2c
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- allwinner,sun6i-a31-i2c
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then:
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required:
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- clocks
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- if:
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properties:
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compatible:
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contains:
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const: allwinner,sun6i-a31-i2c
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then:
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required:
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- resets
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# FIXME: We should set it, but it would report all the generic
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# properties as additional properties.
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# additionalProperties: false
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examples:
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- |
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i2c@11000 {
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compatible = "marvell,mv64xxx-i2c";
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reg = <0x11000 0x20>;
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interrupts = <29>;
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clock-frequency = <100000>;
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};
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- |
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i2c@11000 {
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compatible = "marvell,mv78230-i2c", "marvell,mv64xxx-i2c";
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reg = <0x11000 0x100>;
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interrupts = <29>;
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clock-frequency = <100000>;
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};
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- |
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i2c@701000 {
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compatible = "marvell,mv78230-i2c";
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reg = <0x701000 0x20>;
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interrupts = <29>;
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clock-frequency = <100000>;
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clock-names = "core", "reg";
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clocks = <&core_clock>, <®_clock>;
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};
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...
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