Re: [U-Boot] [PATCH 2/2] i2c:gpio:s5p: I2C GPIO Software implementation (via soft_i2c)

Hi Minkyu,

...

+#ifdef CONFIG_SOFT_I2C

+enum { I2C_PMIC, I2C_NUM, };

What purpose of these enum? Where these used?

For now goni reference target is going to use only one I2C bus (implemented as soft_i2c GPIO). Therefore this enum will be erased for v2. In the future, however this might be needed.

...

+#define S5PC110_GPIO_J3        (S5PC110_GPIO_BASE + 0x2C0) +#define CONFIG_SOFT_I2C_GPIO_SCL s5p_gpio_get_nr(S5PC110_GPIO_J3, 3) +#define CONFIG_SOFT_I2C_GPIO_SDA s5p_gpio_get_nr(S5PC110_GPIO_J3, 0)

I have one question. How we can handle multiple bus? I mean.. how we can change SCL and SDA?

I've asked this question to Heiko Schocher already. Please refer to this reply:

http://lists.denx.de/pipermail/u-boot/2011-July/095610.html