Andy Gross | cca946e | 2014-03-10 16:40:19 -0500 | [diff] [blame] | 1 | QCOM BAM DMA controller |
| 2 | |
| 3 | Required properties: |
Archit Taneja | ce94063 | 2014-09-29 10:03:09 +0530 | [diff] [blame] | 4 | - compatible: must be one of the following: |
| 5 | * "qcom,bam-v1.4.0" for MSM8974, APQ8074 and APQ8084 |
| 6 | * "qcom,bam-v1.3.0" for APQ8064, IPQ8064 and MSM8960 |
Archit Taneja | d51da4d | 2015-02-23 09:40:33 +0530 | [diff] [blame] | 7 | * "qcom,bam-v1.7.0" for MSM8916 |
Andy Gross | cca946e | 2014-03-10 16:40:19 -0500 | [diff] [blame] | 8 | - reg: Address range for DMA registers |
| 9 | - interrupts: Should contain the one interrupt shared by all channels |
| 10 | - #dma-cells: must be <1>, the cell in the dmas property of the client device |
| 11 | represents the channel number |
| 12 | - clocks: required clock |
| 13 | - clock-names: must contain "bam_clk" entry |
| 14 | - qcom,ee : indicates the active Execution Environment identifier (0-7) used in |
| 15 | the secure world. |
Stanimir Varbanov | c778ed4 | 2016-04-11 11:38:40 +0300 | [diff] [blame] | 16 | - qcom,controlled-remotely : optional, indicates that the bam is controlled by |
| 17 | remote proccessor i.e. execution environment. |
Andy Gross | cca946e | 2014-03-10 16:40:19 -0500 | [diff] [blame] | 18 | |
| 19 | Example: |
| 20 | |
| 21 | uart-bam: dma@f9984000 = { |
| 22 | compatible = "qcom,bam-v1.4.0"; |
| 23 | reg = <0xf9984000 0x15000>; |
| 24 | interrupts = <0 94 0>; |
| 25 | clocks = <&gcc GCC_BAM_DMA_AHB_CLK>; |
| 26 | clock-names = "bam_clk"; |
| 27 | #dma-cells = <1>; |
| 28 | qcom,ee = <0>; |
| 29 | }; |
| 30 | |
| 31 | DMA clients must use the format described in the dma.txt file, using a two cell |
| 32 | specifier for each channel. |
| 33 | |
| 34 | Example: |
| 35 | serial@f991e000 { |
| 36 | compatible = "qcom,msm-uart"; |
| 37 | reg = <0xf991e000 0x1000> |
| 38 | <0xf9944000 0x19000>; |
| 39 | interrupts = <0 108 0>; |
| 40 | clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>, |
| 41 | <&gcc GCC_BLSP1_AHB_CLK>; |
| 42 | clock-names = "core", "iface"; |
| 43 | |
| 44 | dmas = <&uart-bam 0>, <&uart-bam 1>; |
| 45 | dma-names = "rx", "tx"; |
| 46 | }; |