On Thu, Jul 19, 2012 at 12:40 PM, Rajeshwari Shinde
<rajeshwar...@samsung.com> wrote:
> This enables I2C support on smdk5250.
> Pinmux setting moved to board file to avoid repeated setting of
> gpio lines.
>
> Signed-off-by: Alim Akhtar <alim.akh...@samsung.com>
> Signed-off-by: Doug Anderson <diand...@chromium.org>
> Signed-off-by: Rajeshwari Shinde <rajeshwar...@samsung.com>
> Acked-by: Simon Glass <s...@chromium.org>
Acked-by: Simon Glass <s...@chromium.org>
> ---
> Changes in V2:
> - None
> Changes in V3:
> - None
> Changes in V4:
> - None
> Changes in V5:
> - Pinmux setting of gpio lines moved to board_early_init_f.
> Chnages in V6:
> - EXYNOS_I2C_SPACING moved to cpu.h
> - board_i2c_init compiled only when CONFIG_DRIVER_S3C24X0_I2C is
> defined.
> board/samsung/smdk5250/smdk5250.c | 28 +++++++++++++++++++++++++++-
> include/configs/smdk5250.h | 8 ++++++++
> 2 files changed, 35 insertions(+), 1 deletions(-)
>
> diff --git a/board/samsung/smdk5250/smdk5250.c
> b/board/samsung/smdk5250/smdk5250.c
> index b593325..12e6e66 100644
> --- a/board/samsung/smdk5250/smdk5250.c
> +++ b/board/samsung/smdk5250/smdk5250.c
> @@ -172,9 +172,35 @@ static int board_uart_init(void)
> return 0;
> }
>
> +#ifdef CONFIG_DRIVER_S3C24X0_I2C
> +static int board_i2c_init(void)
> +{
> + int i, err;
> +
> + for (i = 0; i < CONFIG_MAX_I2C_NUM; i++) {
> + err = exynos_pinmux_config((PERIPH_ID_I2C0 + i),
> + PINMUX_FLAG_NONE);
> + if (err) {
> + debug("I2C%d not configured\n", (PERIPH_ID_I2C0 + i));
> + return err;
> + }
> + }
> + return 0;
> +}
> +#endif
> +
> #ifdef CONFIG_BOARD_EARLY_INIT_F
> int board_early_init_f(void)
> {
> - return board_uart_init();
> + int err;
> + err = board_uart_init();
> + if (err) {
> + debug("UART init failed\n");
> + return err;
> + }
> +#ifdef CONFIG_DRIVER_S3C24X0_I2C
> + err = board_i2c_init();
> +#endif
> + return err;
> }
> #endif
> diff --git a/include/configs/smdk5250.h b/include/configs/smdk5250.h
> index c0eaaf8..65dfe9f 100644
> --- a/include/configs/smdk5250.h
> +++ b/include/configs/smdk5250.h
> @@ -198,6 +198,14 @@
>
> #define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_LOAD_ADDR - 0x1000000)
>
> +/* I2C */
> +#define CONFIG_HARD_I2C
> +#define CONFIG_CMD_I2C
> +#define CONFIG_SYS_I2C_SPEED 100000 /* 100 Kbps */
> +#define CONFIG_DRIVER_S3C24X0_I2C
> +#define CONFIG_I2C_MULTI_BUS
> +#define CONFIG_MAX_I2C_NUM 8
> +
> /* Ethernet Controllor Driver */
> #ifdef CONFIG_CMD_NET
> #define CONFIG_SMC911X
> --
> 1.7.4.4
>
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
