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83xx, kmeter1: add I2C, dtt, eeprom support

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This patch adds I2C support for the Keymile kmeter1 board.
It uses the First I2C Controller from the CPU, for
accessing 4 temperature sensors, an eeprom with IVM data
and the booteeprom over a pca9547 mux.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
This commit is contained in:
Heiko Schocher 2009-02-24 11:30:34 +01:00 committed by Kim Phillips
parent db1d72afd7
commit 19f0e93041
4 changed files with 69 additions and 8 deletions
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2
board/keymile/common/common.c
View File

@ -318,7 +318,7 @@ int ivm_read_eeprom (void)
if (buf != NULL)
dev_addr = simple_strtoul ((char *)buf, NULL, 16);
if (eeprom_read (dev_addr, 0, i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN) != 0) {
if (i2c_read(dev_addr, 0, 1, i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN) != 0) {
printf ("Error reading EEprom\n");
return -2;
}

33
board/keymile/kmeter1/kmeter1.c
View File

@ -59,6 +59,23 @@ const qe_iop_conf_t qe_iop_conf_tab[] = {
{0, 0, 0, 0, QE_IOP_TAB_END},
};
static int board_init_i2c_busses (void)
{
I2C_MUX_DEVICE *dev = NULL;
uchar *buf;
/* Set up the Bus for the DTTs */
buf = (unsigned char *) getenv ("dtt_bus");
if (buf != NULL)
dev = i2c_mux_ident_muxstring (buf);
if (dev == NULL) {
printf ("Error couldn't add Bus for DTT\n");
printf ("please setup dtt_bus to where your\n");
printf ("DTT is found.\n");
}
return 0;
}
int board_early_init_r (void)
{
void *reg = (void *)(CONFIG_SYS_IMMR + 0x14a8);
@ -80,6 +97,13 @@ int board_early_init_r (void)
return 0;
}
int misc_init_r (void)
{
/* add board specific i2c busses */
board_init_i2c_busses ();
return 0;
}
int fixed_sdram(void)
{
volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
@ -156,3 +180,12 @@ void ft_board_setup (void *blob, bd_t *bd)
ft_cpu_setup (blob, bd);
}
#endif
#if defined(CONFIG_HUSH_INIT_VAR)
extern int ivm_read_eeprom (void);
int hush_init_var (void)
{
ivm_read_eeprom ();
return 0;
}
#endif

7
include/configs/keymile-common.h
View File

@ -42,13 +42,9 @@
#define CONFIG_CMD_IMMAP
#define CONFIG_CMD_MII
#define CONFIG_CMD_PING
/* should go away, if kmeter I2C support is enabled */
#if defined(CONFIG_MGCOGE) || defined(CONFIG_MGSUVD)
#define CONFIG_CMD_DTT
#define CONFIG_CMD_EEPROM
#define CONFIG_CMD_I2C
#endif
#undef CONFIG_WATCHDOG /* disable platform specific watchdog */
@ -73,10 +69,7 @@
#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE /* Boot Argument Buffer Size */
#define CONFIG_CMDLINE_EDITING 1 /* add command line history */
/* should go away, if kmeter I2C support is enabled */
#if defined(CONFIG_MGCOGE) || defined(CONFIG_MGSUVD)
#define CONFIG_HUSH_INIT_VAR 1
#endif
#define CONFIG_SYS_ALT_MEMTEST /* memory test, takes time */
#define CONFIG_SYS_MEMTEST_START 0x00100000 /* memtest works on */

35
include/configs/kmeter1.h
View File

@ -32,6 +32,7 @@
/* include common defines/options for all Keymile boards */
#include "keymile-common.h"
#define CONFIG_MISC_INIT_R 1
/*
* System Clock Setup
*/
@ -300,6 +301,38 @@
#define CONFIG_ENV_SIZE 0x2000
#endif /* CFG_RAMBOOT */
/* I2C */
#define CONFIG_HARD_I2C /* I2C with hardware support */
#undef CONFIG_SOFT_I2C /* I2C bit-banged */
#define CONFIG_FSL_I2C
#define CONFIG_SYS_I2C_SPEED 200000 /* I2C speed and slave address */
#define CONFIG_SYS_I2C_SLAVE 0x7F
#define CONFIG_SYS_I2C_OFFSET 0x3000
#define CONFIG_I2C_MULTI_BUS 1
#define CONFIG_I2C_CMD_TREE 1
#define CONFIG_SYS_MAX_I2C_BUS 2
#define CONFIG_I2C_MUX 1
/* EEprom support */
#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN 2
#define CONFIG_SYS_I2C_MULTI_EEPROMS 1
#define CONFIG_SYS_EEPROM_PAGE_WRITE_ENABLE
#define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS 3
#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 10
/* Support the IVM EEprom */
#define CONFIG_SYS_IVM_EEPROM_ADR 0x50
#define CONFIG_SYS_IVM_EEPROM_MAX_LEN 0x400
#define CONFIG_SYS_IVM_EEPROM_PAGE_LEN 0x100
/* I2C SYSMON (LM75, AD7414 is almost compatible) */
#define CONFIG_DTT_LM75 1 /* ON Semi's LM75 */
#define CONFIG_DTT_SENSORS {0, 1, 2, 3} /* Sensor addresses */
#define CONFIG_SYS_DTT_MAX_TEMP 70
#define CONFIG_SYS_DTT_LOW_TEMP -30
#define CONFIG_SYS_DTT_HYSTERESIS 3
#define CONFIG_SYS_DTT_BUS_NUM (2)
#if defined(CONFIG_PCI)
#define CONFIG_CMD_PCI
#endif
@ -452,6 +485,8 @@
"loadfdt=tftp ${fdt_addr_r} ${fdt_file}\0" \
"loadkernel=tftp ${kernel_addr_r} ${boot_file}\0" \
"unlock=yes\0" \
"EEprom_ivm=pca9547:70:9\0" \
"dtt_bus=pca9547:70:a\0" \
""
#endif /* __CONFIG_H */