diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0044-dmaengine-qcom_bam_dma-Add-device-tree-binding.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0044-dmaengine-qcom_bam_dma-Add-device-tree-binding.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0044-dmaengine-qcom_bam_dma-Add-device-tree-binding.patch b/target/linux/ipq806x/patches/0044-dmaengine-qcom_bam_dma-Add-device-tree-binding.patch new file mode 100644 index 0000000000..148959a9bc --- /dev/null +++ b/target/linux/ipq806x/patches/0044-dmaengine-qcom_bam_dma-Add-device-tree-binding.patch @@ -0,0 +1,65 @@ +From b5e19b657e352d565c5ddeae5f6dfd542de9d7e5 Mon Sep 17 00:00:00 2001 +From: Andy Gross <agross@codeaurora.org> +Date: Mon, 10 Mar 2014 16:40:19 -0500 +Subject: [PATCH 044/182] dmaengine: qcom_bam_dma: Add device tree binding + +Add device tree binding support for the QCOM BAM DMA driver. + +Acked-by: Kumar Gala <galak@codeaurora.org> +Signed-off-by: Andy Gross <agross@codeaurora.org> +Signed-off-by: Vinod Koul <vinod.koul@intel.com> +--- + .../devicetree/bindings/dma/qcom_bam_dma.txt | 41 ++++++++++++++++++++ + 1 file changed, 41 insertions(+) + create mode 100644 Documentation/devicetree/bindings/dma/qcom_bam_dma.txt + +diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt +new file mode 100644 +index 0000000..d75a9d7 +--- /dev/null ++++ b/Documentation/devicetree/bindings/dma/qcom_bam_dma.txt +@@ -0,0 +1,41 @@ ++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"; ++ }; +-- +1.7.10.4 + |