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.akhtar@samsung.com Signed-off-by: Doug Anderson dianders@chromium.org Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Simon Glass sjg@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