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This patch adds the binding documentation for Spreadtrum I2C controller device. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
32 lines
1.0 KiB
Plaintext
32 lines
1.0 KiB
Plaintext
I2C for Spreadtrum platforms
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Required properties:
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- compatible: Should be "sprd,sc9860-i2c".
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- reg: Specify the physical base address of the controller and length
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of memory mapped region.
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- interrupts: Should contain I2C interrupt.
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- clock-names: Should contain following entries:
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"i2c" for I2C clock,
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"source" for I2C source (parent) clock,
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"enable" for I2C module enable clock.
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- clocks: Should contain a clock specifier for each entry in clock-names.
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- clock-frequency: Constains desired I2C bus clock frequency in Hz.
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- #address-cells: Should be 1 to describe address cells for I2C device address.
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- #size-cells: Should be 0 means no size cell for I2C device address.
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Optional properties:
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- Child nodes conforming to I2C bus binding
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Examples:
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i2c0: i2c@70500000 {
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compatible = "sprd,sc9860-i2c";
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reg = <0 0x70500000 0 0x1000>;
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interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
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clock-names = "i2c", "source", "enable";
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clocks = <&clk_i2c3>, <&ext_26m>, <&clk_ap_apb_gates 11>;
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clock-frequency = <400000>;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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