projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 6145197b BC |
1 | I2C for OMAP platforms |
| 2 | ||
| 3 | Required properties : | |
| ab214c48 V |
4 | - compatible : Must be |
| 5 | "ti,omap2420-i2c" for OMAP2420 SoCs | |
| 6 | "ti,omap2430-i2c" for OMAP2430 SoCs | |
| 7 | "ti,omap3-i2c" for OMAP3 SoCs | |
| 8 | "ti,omap4-i2c" for OMAP4+ SoCs | |
| 9 | "ti,am654-i2c", "ti,omap4-i2c" for AM654 SoCs | |
| 6145197b BC |
10 | - ti,hwmods : Must be "i2c<n>", n being the instance number (1-based) |
| 11 | - #address-cells = <1>; | |
| 12 | - #size-cells = <0>; | |
| 13 | ||
| 14 | Recommended properties : | |
| 15 | - clock-frequency : Desired I2C bus clock frequency in Hz. Otherwise | |
| 16 | the default 100 kHz frequency will be used. | |
| 17 | ||
| 18 | Optional properties: | |
| 19 | - Child nodes conforming to i2c bus binding | |
| 20 | ||
| 21 | Note: Current implementation will fetch base address, irq and dma | |
| 22 | from omap hwmod data base during device registration. | |
| 23 | Future plan is to migrate hwmod data base contents into device tree | |
| 24 | blob so that, all the required data will be used from device tree dts | |
| 25 | file. | |
| 26 | ||
| 27 | Examples : | |
| 28 | ||
| 29 | i2c1: i2c@0 { | |
| 30 | compatible = "ti,omap3-i2c"; | |
| 31 | #address-cells = <1>; | |
| 32 | #size-cells = <0>; | |
| 33 | ti,hwmods = "i2c1"; | |
| 34 | clock-frequency = <400000>; | |
| 35 | }; |