[U-Boot] [PATCH v2 07/12] sunxi: Add i2c support

[Heiko Schocher <hs@denx.de>]

Hello Hans,

Am 03.06.2014 21:41, schrieb Hans de Goede:
> Add support for the i2c controller found on all Allwinner sunxi SoCs,
> this is the same controller as found on the Marvell orion5x and kirkwood
> SoC families, with a slightly different register layout, so this patch uses
> the existing mvtwsi code.
>
> Signed-off-by: Hans de Goede<hdegoede@redhat.com>
> Acked-by: Ian Campbell<ijc@hellion.org.uk>
> ---
>   arch/arm/cpu/armv7/sunxi/board.c      |  6 ++++++
>   arch/arm/include/asm/arch-sunxi/i2c.h | 15 +++++++++++++++
>   board/sunxi/board.c                   |  7 +++++++
>   drivers/i2c/Makefile                  |  1 +
>   drivers/i2c/mvtwsi.c                  | 18 ++++++++++++++++++
>   include/configs/sunxi-common.h        |  9 +++++++++
>   6 files changed, 56 insertions(+)
>   create mode 100644 arch/arm/include/asm/arch-sunxi/i2c.h
[...]
> diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
> index 1d1c87d..2db083c 100644
> --- a/include/configs/sunxi-common.h
> +++ b/include/configs/sunxi-common.h
> @@ -161,6 +161,15 @@
>   #undef CONFIG_CMD_NET
>   #undef CONFIG_CMD_NFS
>
> +/* I2C */
> +#define CONFIG_SPL_I2C_SUPPORT
> +/* No CONFIG_SYS_I2C as we use the non converted mvtwsi driver */
> +#define CONFIG_HARD_I2C

NACK. Goal is to get rid of HARD_I2C define ... please convert this
driver to fit with CONFIG_SYS_I2C framework.
A fast look in this driver, this should not to be to hard, as this
driver does not support multi busses...

A good example for porting a i2c driver with no multibus support is:

commit 0bdffe71fddeaa46768a39305797e4512dee0f15
Author: Heiko Schocher <hs@denx.de>
Date:   Fri Nov 8 07:30:53 2013 +0100

     i2c, zynq: convert zynq i2c driver to new multibus/multiadapter framework

> +#define CONFIG_SYS_I2C_SUNXI
> +#define CONFIG_SYS_I2C_SPEED		400000
> +#define CONFIG_SYS_I2C_SLAVE		0x7f
> +#define CONFIG_CMD_I2C
> +
>   #ifndef CONFIG_CONS_INDEX
>   #define CONFIG_CONS_INDEX              1       /* UART0 */
>   #endif

bye,
Heiko
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