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Date: Thu, 9 Dec 2021 20:35:20 +0530
From: Akhil R <akhilrajeev@...dia.com>
To: <andy.shevchenko@...il.com>, <christian.koenig@....com>,
<digetx@...il.com>, <dri-devel@...ts.freedesktop.org>,
<jonathanh@...dia.com>, <ldewangan@...dia.com>,
<linaro-mm-sig@...ts.linaro.org>, <linux-i2c@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-media@...r.kernel.org>,
<linux-tegra@...r.kernel.org>, <p.zabel@...gutronix.de>,
<sumit.semwal@...aro.org>, <thierry.reding@...il.com>,
<robh+dt@...nel.org>, <devicetree@...r.kernel.org>
CC: <akhilrajeev@...dia.com>
Subject: [PATCH 1/2] dt-bindings: i2c: tegra: Add SMBus feature properties
Tegra I2C can use a gpio as an smbus-alert. Document the usage of
the same.
Signed-off-by: Akhil R <akhilrajeev@...dia.com>
---
Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
index 3f2f990..71ee79b 100644
--- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt
@@ -70,6 +70,10 @@ Required properties:
- rx
- tx
+optional properties:
+- smbalert-gpio: Must contain an entry for the gpio to be used as smbus alert.
+ It will be used only if optional smbus-alert property is present.
+
Example:
i2c@...0c000 {
--
2.7.4
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