[U-Boot] TI:OMAP: [PATCH 2/7] Enable I2C bus switching

[Tom <Tom.Rix@windriver.com>]

Khasim Syed Mohammed wrote:
> From 9bb1c3501c8f098dac6e224c99e409ebf92b0ab9 Mon Sep 17 00:00:00 2001
> From: Syed Mohammed Khasim <khasim@ti.com>
> Date: Mon, 18 Jan 2010 18:11:14 +0530
> Subject: [PATCH] Enable I2C bus switching
> 
> OMAP3 supports Multiple I2C channels, this patch allows
> us to use i2c dev <bus no> command to switch between busses.
> 
> Signed-off-by: Syed Mohammed Khasim <khasim@ti.com>
> Acked-by: Heiko Schocher <hs@denx.de>
> ---
>  drivers/i2c/omap24xx_i2c.c     |    5 +++++
>  include/configs/omap3_beagle.h |    6 ++++++
>  2 files changed, 11 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
> index ff18991..e8c8184 100644
> --- a/drivers/i2c/omap24xx_i2c.c
> +++ b/drivers/i2c/omap24xx_i2c.c
> @@ -435,3 +435,8 @@ int i2c_set_bus_num(unsigned int bus)
> 
>  	return 0;
>  }
> +
> +int i2c_get_bus_num(void)
> +{
> +	return (int) current_bus;
> +}
> diff --git a/include/configs/omap3_beagle.h b/include/configs/omap3_beagle.h
> index a8abb0e..4d516a4 100644
> --- a/include/configs/omap3_beagle.h
> +++ b/include/configs/omap3_beagle.h
> @@ -100,6 +100,12 @@
>  /* DDR - I use Micron DDR */
>  #define CONFIG_OMAP3_MICRON_DDR		1
> 
> +/* Enable Multi Bus support for I2C */
> +#define CONFIG_I2C_MULTI_BUS		1
> +
> +/* Probe all devices */
> +#define CONFIG_SYS_I2C_NOPROBES		{0x0, 0x0}

Most/All of the configs I reviewed set the addr element
to a valid address.  I do not believe 0 is a valid address
on omap.  If the intent is a double negative
{0, 0} == probe all
Then add a comment.

Tom