Re: [PATCH v1 3/5] dt-bindings: Add DT bindings for NVIDIA Tegra AHB DMA controller
From: Jon Hunter <jonathanh@nvidia.com>
Date: 2017-09-26 14:52:12
Also in:
linux-clk, linux-tegra, lkml
On 26/09/17 00:22, Dmitry Osipenko wrote:
quoted hunk ↗ jump to hunk
Document DT bindings for NVIDIA Tegra AHB DMA controller that presents on Tegra20/30 SoC's. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- .../bindings/dma/nvidia,tegra20-ahbdma.txt | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txtdiff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt b/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt new file mode 100644 index 000000000000..2af9aa76ae11 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt@@ -0,0 +1,23 @@ +* NVIDIA Tegra AHB DMA controller + +Required properties: +- compatible: Must be "nvidia,tegra20-ahbdma" +- reg: Should contain registers base address and length. +- interrupts: Should contain one entry, DMA controller interrupt. +- clocks: Should contain one entry, DMA controller clock. +- resets : Should contain one entry, DMA controller reset. +- #dma-cells: Should be <1>. The cell represents DMA request select value + for the peripheral. For more details consult the Tegra TRM's + documentation, in particular AHB DMA channel control register + REQ_SEL field.
What about the TRIG_SEL field? Do we need to handle this here as well? Cheers Jon -- nvpublic