V3s_Allwinner
/
uboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 2 Wiki Activity

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>
This commit is contained in:
Alessandro Rubini 2009-07-24 11:27:14 +02:00 committed by Heiko Schocher
parent 60cbfbfd0f
commit bb4291e625
2 changed files with 31 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
board/st/nhk8815/nhk8815.c
View File

@ -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;
}

18
include/configs/nhk8815.h
View File

@ -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