xref: /freebsd/sys/contrib/device-tree/Bindings/i2c/i2c-sprd.txt (revision db33c6f3ae9d1231087710068ee4ea5398aacca7)
1I2C for Spreadtrum platforms
2
3Required properties:
4- compatible: Should be "sprd,sc9860-i2c".
5- reg: Specify the physical base address of the controller and length
6  of memory mapped region.
7- interrupts: Should contain I2C interrupt.
8- clock-names: Should contain following entries:
9  "i2c" for I2C clock,
10  "source" for I2C source (parent) clock,
11  "enable" for I2C module enable clock.
12- clocks: Should contain a clock specifier for each entry in clock-names.
13- clock-frequency: Contains desired I2C bus clock frequency in Hz.
14- #address-cells: Should be 1 to describe address cells for I2C device address.
15- #size-cells: Should be 0 means no size cell for I2C device address.
16
17Optional properties:
18- Child nodes conforming to I2C bus binding
19
20Examples:
21i2c0: i2c@70500000 {
22	compatible = "sprd,sc9860-i2c";
23	reg = <0 0x70500000 0 0x1000>;
24	interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
25	clock-names = "i2c", "source", "enable";
26	clocks = <&clk_i2c3>, <&ext_26m>, <&clk_ap_apb_gates 11>;
27	clock-frequency = <400000>;
28	#address-cells = <1>;
29	#size-cells = <0>;
30};
31
32