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| author | Thierry Reding <treding@nvidia.com> | 2016-04-12 17:07:36 +0200 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2016-04-20 00:25:19 +0200 |
| commit | a8ca1b28acf543143bb96f62eb1423164accaa53 (patch) | |
| tree | 140c40b7650883f06b97e09ead90661718e0ec07 /Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt | |
| parent | dt-bindings: tegra: Remove 0, prefix from unit-addresses (diff) | |
| download | linux-a8ca1b28acf543143bb96f62eb1423164accaa53.tar.xz linux-a8ca1b28acf543143bb96f62eb1423164accaa53.zip | |
dt-bindings: tegra: Rename some bindings for consistency
Device tree binding for NVIDIA Tegra have traditionally carried the
"nvidia," vendor prefix in the filename. A couple of odd ones don't, so
fix them up for consistency.
Also rename existing bindings to reflect the first compatible value that
they document. This wasn't done consistently either.
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/nvidia,tegra20-apbdma.txt | 44 |
1 files changed, 44 insertions, 0 deletions
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 000000000000..c6908e7c42cc --- /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,<chip>-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>; +}; |