From mboxrd@z Thu Jan  1 00:00:00 1970
From: Troy Kisky <troy.kisky@boundarydevices.com>
Date: Tue, 14 Jan 2014 16:25:51 -0700
Subject: [U-Boot] mxc_i2c driver
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References: <52D5AB9B.5010007@freescale.com>
Message-ID: <52D5C77F.6000504@boundarydevices.com>
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On 1/14/2014 2:26 PM, York Sun wrote:
> Troy,
>
> I am trying to use mxc_i2c driver with multiple buses. I didn't figure out how
> the bases are set. Can you shed some light on this?
>
> Thanks,
>
> York
>
see board/boundary/nitrogen6x/nitrogen6x.c

It calls
         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
which is in
arch/arm/imx-common/i2c-mxv7.c

This file has an array of base addresses

static void * const i2c_bases[] = {
         (void *)I2C1_BASE_ADDR,
         (void *)I2C2_BASE_ADDR,
#ifdef I2C3_BASE_ADDR
         (void *)I2C3_BASE_ADDR,
#endif
};