[U-Boot] [u-boot] [PATCH][1/2] mx27: Add necessary defines and helper functions to support I2C in i.MX27.

[Heiko Schocher]

Hello Javier,

Javier Martin wrote:
> Add proper register definitions, macros and clock functions required
> for I2C driver to be developed.
> 
> 
> 
> Signed-off-by: Javier Martin <javier.martin at vista-silicon.com>
> --
> diff --git a/cpu/arm926ejs/mx27/generic.c b/cpu/arm926ejs/mx27/generic.c
> index 808371f..540ef0c 100644
[...]
> diff --git a/include/asm-arm/arch-mx27/imx-regs.h b/include/asm-arm/arch-mx27/imx-regs.h
> index d36a6da..2b89b4e 100644
> --- a/include/asm-arm/arch-mx27/imx-regs.h
> +++ b/include/asm-arm/arch-mx27/imx-regs.h
> @@ -206,6 +206,10 @@ struct iim_regs {
>  };
>  #endif
> 
> +#define __REG(x)     (*((volatile u32 *)(x)))
> +#define __REG16(x)   (*((volatile u16 *)(x)))
> +#define __REG8(x)    (*((volatile u8 *)(x)))
> +

Why you need this? Couldn;t you use io accessor from asm/io.h?

bye,
Heiko
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