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" \ ""