[U-Boot] [PATCH 2/3] Reset interrupted i2c slaves (galaxy5200)

[Peter Tyser]

Hi Eric,

On Tue, 2009-08-25 at 08:57 -0500, Eric Millbrandt wrote:
> Reset any i2c devices that may have been interrupted by a system reset.
> Normally this would be accomplished by clocking the line until SCL and SDA
> are released and then sending a start condtiion (From an Atmel datasheet).
> But since there is only write access to these lines on the MPC5200 we can
> only attempt to reset any slave devices by sending more start commands than
> bits the slave is attempting to transmit.

<snip>

> diff --git a/include/configs/galaxy5200.h b/include/configs/galaxy5200.h
> index e9a4569..eb2cae6 100644
> --- a/include/configs/galaxy5200.h
> +++ b/include/configs/galaxy5200.h
> @@ -81,8 +81,8 @@
>  #endif
>  /* RAMBOOT will be defined automatically in memory section */
>  
> -#define MTDIDS_DEFAULT 		"nor0=physmap-flash.0"
> -#define MTDPARTS_DEFAULT   	"mtdparts=physmap-flash.0:256k(ubootl)," \
> +#define MTDIDS_DEFAULT		"nor0=physmap-flash.0"
> +#define MTDPARTS_DEFAULT	"mtdparts=physmap-flash.0:256k(ubootl)," \
>  	"1792k(kernel),13312k(jffs2),256k(uboot)ro,256k(oftree),-(space)"
>  
>  /*
> @@ -94,7 +94,7 @@
>  #undef	CONFIG_BOOTARGS
>  
>  #define CONFIG_PREBOOT	"echo;"	\
> -	"echo Welcome to U-Boot"\
> +	"echo Welcome to U-Boot;"\
>  	"echo"
>  
>  /*
> @@ -110,6 +110,7 @@
>  #define CONFIG_SYS_I2C_MODULE 2		/* Select I2C module #1 or #2 */
>  #define CONFIG_SYS_I2C_SPEED 100000	/* 100 kHz */
>  #define CONFIG_SYS_I2C_SLAVE 0x7F
> +#define CONFIG_MISC_INIT_F 1           /* Reset i2c busses */
>  
>  /*
>   * EEPROM CAT24WC32 configuration
> @@ -376,7 +377,7 @@
>  #define CONFIG_SYS_BOOTCS_START		CONFIG_SYS_FLASH_BASE
>  #define CONFIG_SYS_BOOTCS_SIZE		CONFIG_SYS_FLASH_SIZE
>  
> -#define CONFIG_SYS_RESET_ADDRESS 	0xff000000
> +#define CONFIG_SYS_RESET_ADDRESS	0xff000000

Other than the "#define CONFIG_MISC_INIT_F 1" change, the modifications
to include/configs/galaxy5200.h should be separated out into a different
patch (if you want to have them committed) as they don't have anything
to do with the patch's title and description.

Best,
Peter