| Shawn Guo | dfcd04b | 2011-09-08 15:09:35 +0800 | [diff] [blame] | 1 | * Freescale Inter IC (I2C) and High Speed Inter IC (HS-I2C) for i.MX |
| 2 | |
| 3 | Required properties: |
| Jingchang Lu | e66ff0a | 2013-08-21 10:11:59 +0800 | [diff] [blame] | 4 | - compatible : |
| 5 | - "fsl,imx1-i2c" for I2C compatible with the one integrated on i.MX1 SoC |
| 6 | - "fsl,imx21-i2c" for I2C compatible with the one integrated on i.MX21 SoC |
| 7 | - "fsl,vf610-i2c" for I2C compatible with the one integrated on Vybrid vf610 SoC |
| Shawn Guo | dfcd04b | 2011-09-08 15:09:35 +0800 | [diff] [blame] | 8 | - reg : Should contain I2C/HS-I2C registers location and length |
| 9 | - interrupts : Should contain I2C/HS-I2C interrupt |
| Matt Porter | 5d23211 | 2015-03-03 11:57:08 -0500 | [diff] [blame] | 10 | - clocks : Should contain the I2C/HS-I2C clock specifier |
| Shawn Guo | dfcd04b | 2011-09-08 15:09:35 +0800 | [diff] [blame] | 11 | |
| 12 | Optional properties: |
| 13 | - clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz. |
| 14 | The absence of the propoerty indicates the default frequency 100 kHz. |
| Yao Yuan | ce1a788 | 2014-11-18 18:31:06 +0800 | [diff] [blame] | 15 | - dmas: A list of two dma specifiers, one for each entry in dma-names. |
| 16 | - dma-names: should contain "tx" and "rx". |
| Shawn Guo | dfcd04b | 2011-09-08 15:09:35 +0800 | [diff] [blame] | 17 | |
| 18 | Examples: |
| 19 | |
| 20 | i2c@83fc4000 { /* I2C2 on i.MX51 */ |
| Shawn Guo | 5bdfba2 | 2012-09-14 15:19:00 +0800 | [diff] [blame] | 21 | compatible = "fsl,imx51-i2c", "fsl,imx21-i2c"; |
| Shawn Guo | dfcd04b | 2011-09-08 15:09:35 +0800 | [diff] [blame] | 22 | reg = <0x83fc4000 0x4000>; |
| 23 | interrupts = <63>; |
| 24 | }; |
| 25 | |
| 26 | i2c@70038000 { /* HS-I2C on i.MX51 */ |
| Shawn Guo | 5bdfba2 | 2012-09-14 15:19:00 +0800 | [diff] [blame] | 27 | compatible = "fsl,imx51-i2c", "fsl,imx21-i2c"; |
| Shawn Guo | dfcd04b | 2011-09-08 15:09:35 +0800 | [diff] [blame] | 28 | reg = <0x70038000 0x4000>; |
| 29 | interrupts = <64>; |
| 30 | clock-frequency = <400000>; |
| 31 | }; |
| Yao Yuan | ce1a788 | 2014-11-18 18:31:06 +0800 | [diff] [blame] | 32 | |
| 33 | i2c0: i2c@40066000 { /* i2c0 on vf610 */ |
| 34 | compatible = "fsl,vf610-i2c"; |
| 35 | reg = <0x40066000 0x1000>; |
| 36 | interrupts =<0 71 0x04>; |
| 37 | dmas = <&edma0 0 50>, |
| 38 | <&edma0 0 51>; |
| 39 | dma-names = "rx","tx"; |
| 40 | }; |