From: Benoit Cousson <b-cousson@ti.com>
To: grant.likely@secretlab.ca, tony@atomide.com
Cc: linux-omap@vger.kernel.org, devicetree-discuss@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org, manjugk@ti.com,
Benoit Cousson <b-cousson@ti.com>
Subject: [PATCH 03/13] documentation/dt: Add OMAP i2c bindings documentation
Date: Thu, 1 Sep 2011 19:21:19 +0200 [thread overview]
Message-ID: <1314897689-17791-4-git-send-email-b-cousson@ti.com> (raw)
In-Reply-To: <1314897689-17791-1-git-send-email-b-cousson@ti.com>
From: G, Manjunath Kondaiah <manjugk@ti.com>
Add documentation for using omap i2c controller with device
tree support enabled.
Signed-off-by: G, Manjunath Kondaiah <manjugk@ti.com>
[b-cousson@ti.com: Update the documentaion with hwmods binding]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
---
Documentation/devicetree/bindings/i2c/omap-i2c.txt | 30 ++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/i2c/omap-i2c.txt
diff --git a/Documentation/devicetree/bindings/i2c/omap-i2c.txt b/Documentation/devicetree/bindings/i2c/omap-i2c.txt
new file mode 100644
index 0000000..0dc1de0
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/omap-i2c.txt
@@ -0,0 +1,30 @@
+I2C for OMAP platforms
+
+Required properties :
+- compatible : Must be "ti,omap-i2c"
+- hwmods : Must be "i2c<n>", n being the instance number (1-based)
+- #address-cells = <1>;
+- #size-cells = <0>;
+
+Recommended properties :
+- clock-frequency : Desired I2C bus clock frequency in Hz. Otherwise
+ the default 100 kHz frequency will be used.
+
+Optional properties:
+- Child nodes conforming to i2c bus binding
+
+Note: Current implementation will fetch base address, irq and dma
+from omap hwmod data base during device registration.
+Future plan is to migrate hwmod data base contents into device tree
+blob so that, all the required data will be used from device tree dts
+file.
+
+Examples :
+
+i2c1: i2c@0 {
+ compatible = "ti,omap-i2c";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ hwmods = "i2c1";
+ clock-frequency = <400000>;
+};
--
1.7.0.4
next prev parent reply other threads:[~2011-09-01 17:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-01 17:21 [PATCH 00/13] OMAP4: Add DT support for i2c and twl6030 Benoit Cousson
2011-09-01 17:21 ` [PATCH 01/13] irq: Add stub for none DT build in irqdomain.h Benoit Cousson
2011-09-01 17:21 ` [PATCH 02/13] i2c: OMAP: Add DT support for i2c controller Benoit Cousson
2011-09-01 17:21 ` Benoit Cousson [this message]
2011-09-01 17:21 ` [PATCH 04/13] mfd: twl-core: Add initial DT support for twl4030/twl6030 Benoit Cousson
2011-09-01 18:27 ` Arnd Bergmann
2011-09-05 16:05 ` Cousson, Benoit
2011-09-01 17:21 ` [PATCH 05/13] documentation/dt: Add TWL4030 and TWL6030 bindings Benoit Cousson
2011-09-01 17:21 ` [PATCH 06/13] arm/dts: OMAP4: Add i2c controller nodes Benoit Cousson
2011-09-01 17:21 ` [PATCH 07/13] arm/dts: omap4-sdp: Set clock freq for i2c controllers Benoit Cousson
2011-09-01 17:21 ` [PATCH 08/13] arm/dts: omap4-panda: " Benoit Cousson
2011-09-01 17:21 ` [PATCH 09/13] arm/dts: omap4-sdp: Add twl6030 node Benoit Cousson
2011-09-01 17:21 ` [PATCH 10/13] arm/dts: omap4-panda: " Benoit Cousson
2011-09-01 17:21 ` [PATCH 11/13] OMAP4: board-dt: Remove static i2c init Benoit Cousson
2011-09-01 17:21 ` [PATCH 12/13] arm/dts: omap4-sdp: Add i2c3 & i2c4 devices Benoit Cousson
2011-09-01 17:21 ` [PATCH 13/13] arm/dts: omap4-panda: Add EEPROM entry in i2c3 Benoit Cousson
2011-09-01 19:14 ` [PATCH 00/13] OMAP4: Add DT support for i2c and twl6030 Arnd Bergmann
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