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dt-bindings: i2c: tegra: Document Tegra210 VI I2C 

The Tegra210 features an instance of the Tegra I2C controller that is
part of the host1x domain and typically used for camera use-cases. It
uses pretty much the same programming model but the registers are laid
out differently.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2019-06-07 15:58:34 +02:00
parent 0aade33dde
commit 4e79691d05
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
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@ -35,6 +35,12 @@ Required properties:
Due to above changes, Tegra114 I2C driver makes incompatible with
previous hardware driver. Hence, tegra114 I2C controller is compatible
with "nvidia,tegra114-i2c".
nvidia,tegra210-i2c-vi: Tegra210 has one I2C controller that is part of the
host1x domain and typically used for camera use-cases. This VI I2C
controller is mostly compatible with the programming model of the
regular I2C controllers with a few exceptions. The I2C registers start
at an offset of 0xc00 (instead of 0), registers are 16 bytes apart
(rather than 4) and the controller does not support slave mode.
- reg: Should contain I2C controller registers physical address and length.
- interrupts: Should contain I2C controller interrupts.
- address-cells: Address cells for I2C device address.