[U-Boot] [PATCH 18/31] mpc83xx, kmeter1: add I2C, dtt, eeprom support

Heiko Schocher
2009-01-28T09:40:04Z

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>
---
board/keymile/common/common.c | 4 +++-
board/keymile/kmeter1/kmeter1.c | 32 ++++++++++++++++++++++++++++++++
include/configs/keymile-common.h | 5 -----
include/configs/kmeter1.h | 38 ++++++++++++++++++++++++++++++++++++++
4 files changed, 73 insertions(+), 6 deletions(-)

diff --git a/board/keymile/common/common.c b/board/keymile/common/common.c
index 1338950..17312b5 100644
--- a/board/keymile/common/common.c
+++ b/board/keymile/common/common.c
@@ -40,6 +40,7 @@

extern int i2c_soft_read_pin (void);

+#if defined(CONFIG_HUSH_INIT_VAR)
int ivm_calc_crc (unsigned char *buf, int len)
{
const unsigned short crc_tab[16] = {
@@ -318,13 +319,14 @@ 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;
}

return ivm_analyze_eeprom (i2c_buffer, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
}
+#endif

#if defined(CONFIG_SYS_I2C_INIT_BOARD)
#define DELAY_ABORT_SEQ 62
diff --git a/board/keymile/kmeter1/kmeter1.c b/board/keymile/kmeter1/kmeter1.c
index f04a57a..27f0998 100644
--- a/board/keymile/kmeter1/kmeter1.c
+++ b/board/keymile/kmeter1/kmeter1.c
@@ -26,6 +26,7 @@
#include <asm/mmu.h>
#include <pci.h>
#include <libfdt.h>
+#include <dtt.h>

#include "../common/common.h"

@@ -59,6 +60,22 @@ 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 couldnt add Bus for DTT\n");
+ return 0;
+ }
+ return 0;
+}
+
int board_early_init_r (void)
{
void *reg = (void *)(CONFIG_SYS_IMMR + 0x14a8);
@@ -76,7 +93,13 @@ int board_early_init_r (void)
out_be32 (reg, val);
/* enable the PHY on the PIGGY */
setbits (8, (void *)(CONFIG_SYS_PIGGY_BASE + 0x10003), 0x01);
+ return 0;
+}

+int misc_init_r (void)
+{
+ board_init_i2c_busses ();
+ dtt_init ();
return 0;
}

@@ -156,3 +179,12 @@ 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
diff --git a/include/configs/keymile-common.h b/include/configs/keymile-common.h
index 6abe27a..99c3380 100644
--- a/include/configs/keymile-common.h
+++ b/include/configs/keymile-common.h
@@ -44,13 +44,11 @@
#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
#define CONFIG_CMD_JFFS2
#define CONFIG_JFFS2_CMDLINE
-#endif

#undef CONFIG_WATCHDOG /* disable platform specific watchdog */

@@ -77,10 +75,7 @@
#define CONFIG_COMMAND_HISTORY 1
#define CONFIG_AUTO_COMPLETE /* add autocompletion support */

-/* 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 */
diff --git a/include/configs/kmeter1.h b/include/configs/kmeter1.h
index f9c01f5..17ddcec 100644
--- a/include/configs/kmeter1.h
+++ b/include/configs/kmeter1.h
@@ -33,6 +33,7 @@
/* include common defines/options for all Keymile boards */
#include "keymile-common.h"

+#define CONFIG_MISC_INIT_R 1
/*
* System Clock Setup
*/
@@ -304,6 +305,41 @@
#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_I2C_MULTI_BUS
+#define CONFIG_I2C_CMD_TREE
+#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_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
+
+#define CONFIG_HUSH_INIT_VAR 1
+/* 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)
+#define CONFIG_SYS_DTT_BOARD_INIT 1
+
#if defined(CONFIG_PCI)
#define CONFIG_CMD_PCI
#endif
@@ -428,6 +464,8 @@
"kernel_addr=F00a0000\0" \
"ramdisk_addr=F03a0000\0" \
"ramdisk_addr_r=F10000\0" \
+ "EEprom_ivm=pca9547:70:9\0" \
+ "DTT_bus=pca9547:70:a\0" \
""

--
1.6.0.6

--
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HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany