linux-kernel - Re: [PATCH v4] i2c: exynos5: add High Speed I2C controller driver

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Date:	Fri, 08 Feb 2013 13:16:08 +0000
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Naveen Krishna Chatradhi <ch.naveen@...sung.com>,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org
Cc:	w.sang@...gutronix.de, khali@...ux-fr.org, ben-linux@...ff.org,
	devicetree-discuss@...ts.ozlabs.org, sjg@...omium.org,
	grundler@...omium.org, naveenkrishna.ch@...il.com,
	broonie@...nsource.wolfsonmicro.com
Subject: Re: [PATCH v4] i2c: exynos5: add High Speed I2C controller driver

On Fri, 01 Feb 2013 21:24:44 +0530, Naveen Krishna Chatradhi <ch.naveen@...sung.com> wrote:
> Adds support for High Speed I2C driver found in Exynos5 and later
> SoCs from Samsung. This driver currently supports Auto mode.
> 
> Driver only supports Device Tree method.
> Note: Added debugfs support for registers view, not tested.
> 
> Signed-off-by: Taekgyun Ko <taeggyun.ko@...sung.com>
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@...sung.com>
> ---
> Help please,
> 
> Usual reads and writes are happening. But, when i try doing
> i2cdetect -y 0 0x10 0x59; It throws me continous interrupts at 0x1a
> i2cdetect -y 0 0x50 0x64; It throws me continous interrupts at 0x63
> 
> There are eeproms from 0x50 till 0x58
> wm8994 codec at 0x1a
> 
> Kindly, can anyone explain this behaviour.
> 
>  drivers/i2c/busses/Kconfig       |    7 +
>  drivers/i2c/busses/Makefile      |    1 +
>  drivers/i2c/busses/i2c-exynos5.c |  754 ++++++++++++++++++++++++++++++++++++++

Don't forget you need to document the new compatible string in
Documentation/devicetree/bindings/i2c. That should be part of this
patch.

g.
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