Merge tag 'iwlwifi-next-for-kalle-2014-12-30' of https://git.kernel.org/pub/scm/linux...
[cascardo/linux.git] / Documentation / devicetree / bindings / dma / qcom_bam_dma.txt
1 QCOM BAM DMA controller
2
3 Required 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 - reg: Address range for DMA registers
8 - interrupts: Should contain the one interrupt shared by all channels
9 - #dma-cells: must be <1>, the cell in the dmas property of the client device
10   represents the channel number
11 - clocks: required clock
12 - clock-names: must contain "bam_clk" entry
13 - qcom,ee : indicates the active Execution Environment identifier (0-7) used in
14   the secure world.
15
16 Example:
17
18         uart-bam: dma@f9984000 = {
19                 compatible = "qcom,bam-v1.4.0";
20                 reg = <0xf9984000 0x15000>;
21                 interrupts = <0 94 0>;
22                 clocks = <&gcc GCC_BAM_DMA_AHB_CLK>;
23                 clock-names = "bam_clk";
24                 #dma-cells = <1>;
25                 qcom,ee = <0>;
26         };
27
28 DMA clients must use the format described in the dma.txt file, using a two cell
29 specifier for each channel.
30
31 Example:
32         serial@f991e000 {
33                 compatible = "qcom,msm-uart";
34                 reg = <0xf991e000 0x1000>
35                         <0xf9944000 0x19000>;
36                 interrupts = <0 108 0>;
37                 clocks = <&gcc GCC_BLSP1_UART2_APPS_CLK>,
38                         <&gcc GCC_BLSP1_AHB_CLK>;
39                 clock-names = "core", "iface";
40
41                 dmas = <&uart-bam 0>, <&uart-bam 1>;
42                 dma-names = "rx", "tx";
43         };