diff options
| author | Alessandro Rubini <rubini@unipv.it> | 2009-07-24 11:27:14 +0200 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2009-07-29 09:57:47 +0200 |
| commit | bb4291e62579dbc611e84eaaf973631e0bf129c7 (patch) | |
| tree | 2a2bc8563067e0554fd154184cb6b0866d2a5096 | |
| parent | 60cbfbfd0fbebb4682f10ba96f622bfe17317598 (diff) | |
| download | u-boot-imx-bb4291e62579dbc611e84eaaf973631e0bf129c7.zip u-boot-imx-bb4291e62579dbc611e84eaaf973631e0bf129c7.tar.gz u-boot-imx-bb4291e62579dbc611e84eaaf973631e0bf129c7.tar.bz2 | |
arm nomadik: add i2c
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| -rw-r--r-- | board/st/nhk8815/nhk8815.c | 16 | ||||
| -rw-r--r-- | include/configs/nhk8815.h | 18 |
2 files changed, 31 insertions, 3 deletions
diff --git a/board/st/nhk8815/nhk8815.c b/board/st/nhk8815/nhk8815.c index 085a5e0..1fa506a 100644 --- a/board/st/nhk8815/nhk8815.c +++ b/board/st/nhk8815/nhk8815.c @@ -27,6 +27,7 @@ #include <common.h> #include <asm/io.h> +#include <asm/arch/gpio.h> DECLARE_GLOBAL_DATA_PTR; @@ -61,9 +62,20 @@ int board_init(void) return 0; } -int misc_init_r(void) +int board_late_init(void) { - setenv("verify", "n"); + /* Set the two I2C gpio lines to be gpio high */ + nmk_gpio_set(__SCL, 1); nmk_gpio_set(__SDA, 1); + nmk_gpio_dir(__SCL, 1); nmk_gpio_dir(__SDA, 1); + nmk_gpio_af(__SCL, GPIO_GPIO); nmk_gpio_af(__SDA, GPIO_GPIO); + + /* Reset the I2C port expander, on GPIO77 */ + nmk_gpio_af(77, GPIO_GPIO); + nmk_gpio_dir(77, 1); + nmk_gpio_set(77, 0); + udelay(10); + nmk_gpio_set(77, 1); + return 0; } diff --git a/include/configs/nhk8815.h b/include/configs/nhk8815.h index 3e2e09f..8a83d92 100644 --- a/include/configs/nhk8815.h +++ b/include/configs/nhk8815.h @@ -93,7 +93,7 @@ #define CONFIG_SYS_GBL_DATA_SIZE 128 /* for initial data */ #define CONFIG_SYS_64BIT_VSPRINTF /* mtd desires this */ -#define CONFIG_MISC_INIT_R /* call misc_init_r during start up */ +#define BOARD_LATE_INIT /* call board_late_init during start up */ /* timing informazion */ #define CONFIG_SYS_HZ 1000 /* Mandatory... */ @@ -110,6 +110,22 @@ #define CONFIG_PL01x_PORTS { (void *)CFG_SERIAL0, (void *)CFG_SERIAL1 } #define CONFIG_PL011_CLOCK 48000000 +/* i2c, for the port extenders (uses gpio.c in board directory) */ +#ifndef __ASSEMBLY__ +#include <asm/arch/gpio.h> +#define CONFIG_CMD_I2C +#define CONFIG_SOFT_I2C +#define CONFIG_SYS_I2C_SPEED 400000 +#define __SDA 63 +#define __SCL 62 +#define I2C_SDA(x) nmk_gpio_set(__SDA, x) +#define I2C_SCL(x) nmk_gpio_set(__SCL, x) +#define I2C_READ (nmk_gpio_get(__SDA)!=0) +#define I2C_ACTIVE nmk_gpio_dir(__SDA, 1) +#define I2C_TRISTATE nmk_gpio_dir(__SDA, 0) +#define I2C_DELAY (udelay(2)) +#endif /* __ASSEMBLY__ */ + /* Ethernet */ #define PCI_MEMORY_VADDR 0xe8000000 #define PCI_IO_VADDR 0xee000000 |