1QCOM BAM DMA controller 2 3Required properties: 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 7 * "qcom,bam-v1.7.0" for MSM8916 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. 16- qcom,controlled-remotely : optional, indicates that the bam is controlled by 17 remote proccessor i.e. execution environment. 18- num-channels : optional, indicates supported number of DMA channels in a 19 remotely controlled bam. 20- qcom,num-ees : optional, indicates supported number of Execution Environments 21 in a remotely controlled bam. 22 23Example: 24 25 uart-bam: dma@f9984000 = { 26 compatible = "qcom,bam-v1.4.0"; 27 reg = <0xf9984000 0x15000>; 28 interrupts = <0 94 0>; 29 clocks = <&gcc GCC_BAM_DMA_AHB_CLK>; 30 clock-names = "bam_clk"; 31 #dma-cells = <1>; 32 qcom,ee = <0>; 33 }; 34 35DMA clients must use the format described in the dma.txt file, using a two cell 36specifier for each channel. 37 38Example: 39 serial@f991e000 { 40 compatible = "qcom,msm-uart"; 41 reg = <0xf991e000 0x1000> 42 <0xf9944000 0x19000>; 43 interrupts = <0 108 0>; 44 clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>, 45 <&gcc GCC_BLSP1_AHB_CLK>; 46 clock-names = "core", "iface"; 47 48 dmas = <&uart-bam 0>, <&uart-bam 1>; 49 dma-names = "rx", "tx"; 50 }; 51