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dt-bindings: i2c: dw: cancel mandatory requirements for "#address-cells" and "#size-cells"

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The "#address-cells" and "#size-cells" are required only when the I2C
controller has subnodes. However, some I2C controllers defined in
"arch/arm64/boot/dts/amd/" and "arch/arm64/boot/dts/hisilicon/"
directories do not have child nodes. So they don't need these two
properties and don't write them explicitly.

Therefore, setting properties "#address-cells" and "#size-cells" as
"required" in this yaml file causes the following warnings:
/root/linux-next/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dt.yaml: \
i2c@f7100000: '#address-cells' is a required property
/root/linux-next/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dt.yaml: \
i2c@f7100000: '#size-cells' is a required property

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20201214124347.2120-2-thunder.leizhen@huawei.com
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Zhen Lei 2020-12-14 20:43:47 +08:00 committed by Rob Herring
parent a217d8711d
commit 4aa5b78fb5
1 changed files with 0 additions and 8 deletions
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8
Documentation/devicetree/bindings/i2c/snps,designware-i2c.yaml
View file

@ -101,8 +101,6 @@ unevaluatedProperties: false
required:
- compatible
- reg
- "#address-cells"
- "#size-cells"
- interrupts
examples:
@ -110,8 +108,6 @@ examples:
i2c@f0000 {
compatible = "snps,designware-i2c";
reg = <0xf0000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
interrupts = <11>;
clock-frequency = <400000>;
};
@ -119,8 +115,6 @@ examples:
i2c@1120000 {
compatible = "snps,designware-i2c";
reg = <0x1120000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
interrupts = <12 1>;
clock-frequency = <400000>;
i2c-sda-hold-time-ns = <300>;
@ -148,8 +142,6 @@ examples:
reg = <0x100400 0x100>, <0x198 0x8>;
pinctrl-0 = <&i2c_pins>;
pinctrl-names = "default";
#address-cells = <1>;
#size-cells = <0>;
interrupts = <8>;
clocks = <&ahb_clk>;
};