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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.txt')
-rw-r--r-- | Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.txt b/Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.txt new file mode 100644 index 000000000..3108d0380 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/nvidia,tegra210-aconnect.txt @@ -0,0 +1,44 @@ +NVIDIA Tegra ACONNECT Bus + +The Tegra ACONNECT bus is an AXI switch which is used to connnect various +components inside the Audio Processing Engine (APE). All CPU accesses to +the APE subsystem go through the ACONNECT via an APB to AXI wrapper. + +Required properties: +- compatible: Must be "nvidia,tegra210-aconnect". +- clocks: Must contain the entries for the APE clock (TEGRA210_CLK_APE), + and APE interface clock (TEGRA210_CLK_APB2APE). +- clock-names: Must contain the names "ape" and "apb2ape" for the corresponding + 'clocks' entries. +- power-domains: Must contain a phandle that points to the audio powergate + (namely 'aud') for Tegra210. +- #address-cells: The number of cells used to represent physical base addresses + in the aconnect address space. Should be 1. +- #size-cells: The number of cells used to represent the size of an address + range in the aconnect address space. Should be 1. +- ranges: Mapping of the aconnect address space to the CPU address space. + +All devices accessed via the ACONNNECT are described by child-nodes. + +Example: + + aconnect@702c0000 { + compatible = "nvidia,tegra210-aconnect"; + clocks = <&tegra_car TEGRA210_CLK_APE>, + <&tegra_car TEGRA210_CLK_APB2APE>; + clock-names = "ape", "apb2ape"; + power-domains = <&pd_audio>; + + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x702c0000 0x0 0x702c0000 0x00040000>; + + + child1 { + ... + }; + + child2 { + ... + }; + }; |