| * Freescale MXS DMA |
| |
| Required properties: |
| - compatible : Should be "fsl,<chip>-dma-apbh" or "fsl,<chip>-dma-apbx" |
| - reg : Should contain registers location and length |
| - interrupts : Should contain the interrupt numbers of DMA channels. |
| If a channel is empty/reserved, 0 should be filled in place. |
| - #dma-cells : Must be <1>. The number cell specifies the channel ID. |
| - dma-channels : Number of channels supported by the DMA controller |
| |
| Optional properties: |
| - interrupt-names : Name of DMA channel interrupts |
| |
| Supported chips: |
| imx23, imx28. |
| |
| Examples: |
| |
| dma_apbh: dma-apbh@80004000 { |
| compatible = "fsl,imx28-dma-apbh"; |
| reg = <0x80004000 0x2000>; |
| interrupts = <82 83 84 85 |
| 88 88 88 88 |
| 88 88 88 88 |
| 87 86 0 0>; |
| interrupt-names = "ssp0", "ssp1", "ssp2", "ssp3", |
| "gpmi0", "gmpi1", "gpmi2", "gmpi3", |
| "gpmi4", "gmpi5", "gpmi6", "gmpi7", |
| "hsadc", "lcdif", "empty", "empty"; |
| #dma-cells = <1>; |
| dma-channels = <16>; |
| }; |
| |
| dma_apbx: dma-apbx@80024000 { |
| compatible = "fsl,imx28-dma-apbx"; |
| reg = <0x80024000 0x2000>; |
| interrupts = <78 79 66 0 |
| 80 81 68 69 |
| 70 71 72 73 |
| 74 75 76 77>; |
| interrupt-names = "auart4-rx", "aurat4-tx", "spdif-tx", "empty", |
| "saif0", "saif1", "i2c0", "i2c1", |
| "auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx", |
| "auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx"; |
| #dma-cells = <1>; |
| dma-channels = <16>; |
| }; |
| |
| DMA clients connected to the MXS DMA controller must use the format |
| described in the dma.txt file. |
| |
| Examples: |
| |
| auart0: serial@8006a000 { |
| compatible = "fsl,imx28-auart", "fsl,imx23-auart"; |
| reg = <0x8006a000 0x2000>; |
| interrupts = <112>; |
| dmas = <&dma_apbx 8>, <&dma_apbx 9>; |
| dma-names = "rx", "tx"; |
| }; |
