This enables I2C support on smdk5250. Pinmux setting moved to board file to avoid repeated setting of gpio lines.
Signed-off-by: Alim Akhtar <[email protected]> Signed-off-by: Doug Anderson <[email protected]> Signed-off-by: Rajeshwari Shinde <[email protected]> Acked-by: Simon Glass <[email protected]> --- 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. board/samsung/smdk5250/smdk5250.c | 23 ++++++++++++++++++++++- include/configs/smdk5250.h | 9 +++++++++ 2 files changed, 31 insertions(+), 1 deletions(-) diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c index b593325..fc08ddc 100644 --- a/board/samsung/smdk5250/smdk5250.c +++ b/board/samsung/smdk5250/smdk5250.c @@ -172,9 +172,30 @@ static int board_uart_init(void) return 0; } +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; +} + #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; + } + return board_i2c_init(); } #endif diff --git a/include/configs/smdk5250.h b/include/configs/smdk5250.h index 86dd905..c6df1cf 100644 --- a/include/configs/smdk5250.h +++ b/include/configs/smdk5250.h @@ -192,6 +192,15 @@ #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 +#define EXYNOS_I2C_SPACING 0x10000 + /* Ethernet Controllor Driver */ #ifdef CONFIG_CMD_NET #define CONFIG_SMC911X -- 1.7.4.4 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
