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CONFIG: SMDK5250: I2C: Enable I2C

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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>
This commit is contained in:
Rajeshwari Shinde 2012-07-23 21:23:55 +00:00 committed by Heiko Schocher
parent 178239de19
commit c82b050ead
2 changed files with 39 additions and 1 deletions
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30
board/samsung/smdk5250/smdk5250.c
View File

@ -22,6 +22,7 @@
#include <common.h>
#include <asm/io.h>
#include <i2c.h>
#include <netdev.h>
#include <asm/arch/cpu.h>
#include <asm/arch/gpio.h>
@ -172,9 +173,36 @@ static int board_uart_init(void)
return 0;
}
#ifdef CONFIG_SYS_I2C_INIT_BOARD
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;
}
}
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
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_SYS_I2C_INIT_BOARD
err = board_i2c_init();
#endif
return err;
}
#endif

10
include/configs/smdk5250.h
View File

@ -193,6 +193,16 @@
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_LOAD_ADDR - 0x1000000)
/* I2C */
#define CONFIG_SYS_I2C_INIT_BOARD
#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 CONFIG_SYS_I2C_SLAVE 0x0
/* Ethernet Controllor Driver */
#ifdef CONFIG_CMD_NET
#define CONFIG_SMC911X