| QCOM BAM DMA controller |
| |
| Required properties: |
| - compatible: must contain "qcom,bam-v1.4.0" for MSM8974 |
| - reg: Address range for DMA registers |
| - interrupts: Should contain the one interrupt shared by all channels |
| - #dma-cells: must be <1>, the cell in the dmas property of the client device |
| represents the channel number |
| - clocks: required clock |
| - clock-names: must contain "bam_clk" entry |
| - qcom,ee : indicates the active Execution Environment identifier (0-7) used in |
| the secure world. |
| |
| Example: |
| |
| uart-bam: dma@f9984000 = { |
| compatible = "qcom,bam-v1.4.0"; |
| reg = <0xf9984000 0x15000>; |
| interrupts = <0 94 0>; |
| clocks = <&gcc GCC_BAM_DMA_AHB_CLK>; |
| clock-names = "bam_clk"; |
| #dma-cells = <1>; |
| qcom,ee = <0>; |
| }; |
| |
| DMA clients must use the format described in the dma.txt file, using a two cell |
| specifier for each channel. |
| |
| Example: |
| serial@f991e000 { |
| compatible = "qcom,msm-uart"; |
| reg = <0xf991e000 0x1000> |
| <0xf9944000 0x19000>; |
| interrupts = <0 108 0>; |
| clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>, |
| <&gcc GCC_BLSP1_AHB_CLK>; |
| clock-names = "core", "iface"; |
| |
| dmas = <&uart-bam 0>, <&uart-bam 1>; |
| dma-names = "rx", "tx"; |
| }; |
