From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- .../bindings/dma/nvidia,tegra20-apbdma.txt | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt (limited to 'Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt') diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt b/Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt new file mode 100644 index 000000000..c6908e7c4 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt @@ -0,0 +1,44 @@ +* NVIDIA Tegra APB DMA controller + +Required properties: +- compatible: Should be "nvidia,-apbdma" +- reg: Should contain DMA registers location and length. This shuld include + all of the per-channel registers. +- interrupts: Should contain all of the per-channel DMA interrupts. +- clocks: Must contain one entry, for the module clock. + See ../clocks/clock-bindings.txt for details. +- resets : Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names : Must include the following entries: + - dma +- #dma-cells : Must be <1>. This dictates the length of DMA specifiers in + client nodes' dmas properties. The specifier represents the DMA request + select value for the peripheral. For more details, consult the Tegra TRM's + documentation of the APB DMA channel control register REQ_SEL field. + +Examples: + +apbdma: dma@6000a000 { + compatible = "nvidia,tegra20-apbdma"; + reg = <0x6000a000 0x1200>; + interrupts = < 0 136 0x04 + 0 137 0x04 + 0 138 0x04 + 0 139 0x04 + 0 140 0x04 + 0 141 0x04 + 0 142 0x04 + 0 143 0x04 + 0 144 0x04 + 0 145 0x04 + 0 146 0x04 + 0 147 0x04 + 0 148 0x04 + 0 149 0x04 + 0 150 0x04 + 0 151 0x04 >; + clocks = <&tegra_car 34>; + resets = <&tegra_car 34>; + reset-names = "dma"; + #dma-cells = <1>; +}; -- cgit v1.2.3