diff options
Diffstat (limited to 'Documentation/devicetree/bindings/i2c/i2c-mxs.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-mxs.txt | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mxs.txt b/Documentation/devicetree/bindings/i2c/i2c-mxs.txt index 7a3fe9e5f4cb..4e1c8ac01eba 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mxs.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mxs.txt | |||
| @@ -3,10 +3,13 @@ | |||
| 3 | Required properties: | 3 | Required properties: |
| 4 | - compatible: Should be "fsl,<chip>-i2c" | 4 | - compatible: Should be "fsl,<chip>-i2c" |
| 5 | - reg: Should contain registers location and length | 5 | - reg: Should contain registers location and length |
| 6 | - interrupts: Should contain ERROR and DMA interrupts | 6 | - interrupts: Should contain ERROR interrupt number |
| 7 | - clock-frequency: Desired I2C bus clock frequency in Hz. | 7 | - clock-frequency: Desired I2C bus clock frequency in Hz. |
| 8 | Only 100000Hz and 400000Hz modes are supported. | 8 | Only 100000Hz and 400000Hz modes are supported. |
| 9 | - fsl,i2c-dma-channel: APBX DMA channel for the I2C | 9 | - dmas: DMA specifier, consisting of a phandle to DMA controller node |
| 10 | and I2C DMA channel ID. | ||
| 11 | Refer to dma.txt and fsl-mxs-dma.txt for details. | ||
| 12 | - dma-names: Must be "rx-tx". | ||
| 10 | 13 | ||
| 11 | Examples: | 14 | Examples: |
| 12 | 15 | ||
| @@ -15,7 +18,8 @@ i2c0: i2c@80058000 { | |||
| 15 | #size-cells = <0>; | 18 | #size-cells = <0>; |
| 16 | compatible = "fsl,imx28-i2c"; | 19 | compatible = "fsl,imx28-i2c"; |
| 17 | reg = <0x80058000 2000>; | 20 | reg = <0x80058000 2000>; |
| 18 | interrupts = <111 68>; | 21 | interrupts = <111>; |
| 19 | clock-frequency = <100000>; | 22 | clock-frequency = <100000>; |
| 20 | fsl,i2c-dma-channel = <6>; | 23 | dmas = <&dma_apbx 6>; |
| 24 | dma-names = "rx-tx"; | ||
| 21 | }; | 25 | }; |