linux-kernel - [RFC PATCH v1 01/18] dt-bindings: i2c: tegra: Document Tegra210 VI I2C clocks and power-domains

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Date:   Tue, 9 Jun 2020 23:02:23 -0700
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     <skomatineni@...dia.com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <frankc@...dia.com>, <hverkuil@...all.nl>,
        <sakari.ailus@....fi>, <robh+dt@...nel.org>,
        <helen.koike@...labora.com>
CC:     <digetx@...il.com>, <sboyd@...nel.org>,
        <gregkh@...uxfoundation.org>, <linux-media@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-i2c@...r.kernel.org>
Subject: [RFC PATCH v1 01/18] dt-bindings: i2c: tegra: Document Tegra210 VI I2C clocks and power-domains

This patch documents missing clocks and power-domains of Tegra210 VI I2C.

Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
---
 .../devicetree/bindings/i2c/nvidia,tegra20-i2c.txt    | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
index 18c0de3..3f2f990 100644
--- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
@@ -35,12 +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.
+  nvidia,tegra210-i2c-vi: Tegra210 has one I2C controller that is on host1x bus
+	and is part of VE power 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.
@@ -53,10 +53,17 @@ Required properties:
   - fast-clk
   Tegra114:
   - div-clk
+  Tegra210:
+  - div-clk
+  - slow (only for nvidia,tegra210-i2c-vi compatible node)
 - resets: Must contain an entry for each entry in reset-names.
   See ../reset/reset.txt for details.
 - reset-names: Must include the following entries:
   - i2c
+- power-domains: Only for nvidia,tegra210-i2c-vi compatible node and must
+  include venc powergate node as vi i2c is part of VE power domain.
+  tegra210-i2c-vi:
+  - pd_venc
 - dmas: Must contain an entry for each entry in clock-names.
   See ../dma/dma.txt for details.
 - dma-names: Must include the following entries:
-- 
2.7.4