[PATCH 1/4] dt-bindings: i2c: tegra: Document Tegra210 VI I2C

[Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

From: Thierry Reding <treding-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>

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-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
 .../devicetree/bindings/i2c/nvidia,tegra20-i2c.txt          | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
index f64064f8bdc2..18c0de362451 100644
--- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
@@ -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.
-- 
2.24.1