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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e8813c15be
This gets rid of the need for a pointless 'reg' property for i2c
arbitrators.
I.e. this new and more compact style
some-arbitrator {
i2c-arb {
#address-cells = <1>;
#size-cells = <0>;
some-i2c-device@50 {
reg = <0x50>;
};
};
};
instead of the old
some-arbitrator {
#address-cells = <1>;
#size-cells = <0>;
i2c@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
some-i2c-device@50 {
reg = <0x50>;
};
};
};
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Peter Rosin <peda@axentia.se>
36 lines
612 B
Plaintext
36 lines
612 B
Plaintext
Common i2c arbitration bus properties.
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- i2c-arb child node
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Required properties for the i2c-arb child node:
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- #address-cells = <1>;
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- #size-cells = <0>;
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Optional properties for i2c-arb child node:
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- Child nodes conforming to i2c bus binding
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Example :
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/*
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An NXP pca9541 I2C bus master selector at address 0x74
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with a NXP pca8574 GPIO expander attached.
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*/
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arb@74 {
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compatible = "nxp,pca9541";
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reg = <0x74>;
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i2c-arb {
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#address-cells = <1>;
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#size-cells = <0>;
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gpio@38 {
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compatible = "nxp,pca8574";
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reg = <0x38>;
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#gpio-cells = <2>;
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gpio-controller;
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};
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};
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};
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