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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/i2c/nvidia,tegra186-bpmp-i2c.txt | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt new file mode 100644 index 000000000..ab240e10d --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt @@ -0,0 +1,42 @@ +NVIDIA Tegra186 BPMP I2C controller + +In Tegra186, the BPMP (Boot and Power Management Processor) owns certain HW +devices, such as the I2C controller for the power management I2C bus. Software +running on other CPUs must perform IPC to the BPMP in order to execute +transactions on that I2C bus. This binding describes an I2C bus that is +accessed in such a fashion. + +The BPMP I2C node must be located directly inside the main BPMP node. See +../firmware/nvidia,tegra186-bpmp.txt for details of the BPMP binding. + +This node represents an I2C controller. See ../i2c/i2c.txt for details of the +core I2C binding. + +Required properties: +- compatible: + Array of strings. + One of: + - "nvidia,tegra186-bpmp-i2c". +- #address-cells: Address cells for I2C device address. + Single-cell integer. + Must be <1>. +- #size-cells: + Single-cell integer. + Must be <0>. +- nvidia,bpmp-bus-id: + Single-cell integer. + Indicates the I2C bus number this DT node represent, as defined by the + BPMP firmware. + +Example: + +bpmp { + ... + + i2c { + compatible = "nvidia,tegra186-bpmp-i2c"; + #address-cells = <1>; + #size-cells = <0>; + nvidia,bpmp-bus-id = <5>; + }; +}; |