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authorStephen Warren <swarren@wwwdotorg.org>2013-02-11 21:47:56 -0500
committerWolfram Sang <wolfram@the-dreams.de>2013-02-12 05:33:59 -0500
commitf3b54b9a066edeac5c06e1cdcd82e1cb1224aaef (patch)
treea98bbfac8ccd16ac6535107a066bb78a226adc7d /Documentation/devicetree
parentcb7f07a4c58659d971a60ebbb8547f6611278622 (diff)
i2c: add bcm2835 driver
This implements a very basic I2C host driver for the BCM2835 SoC. Missing features so far are: * 10-bit addressing. * DMA. Reviewed-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt20
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diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt
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1Broadcom BCM2835 I2C controller
2
3Required properties:
4- compatible : Should be "brcm,bcm2835-i2c".
5- reg: Should contain register location and length.
6- interrupts: Should contain interrupt.
7- clocks : The clock feeding the I2C controller.
8
9Recommended properties:
10- clock-frequency : desired I2C bus clock frequency in Hz.
11
12Example:
13
14i2c@20205000 {
15 compatible = "brcm,bcm2835-i2c";
16 reg = <0x7e205000 0x1000>;
17 interrupts = <2 21>;
18 clocks = <&clk_i2c>;
19 clock-frequency = <100000>;
20};