ppc4xx: Switch to I2C bus numer 0 for chip_config command

All currently available 4xx derivats have the I2C bootstrap EEPROM
located on I2C bus number 0. This patch now first sets this bus number,
so that the chip_config command also works for board with multiple
I2C busses, like Katmai.

Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/cpu/ppc4xx/cmd_chip_config.c b/cpu/ppc4xx/cmd_chip_config.c
index d360d5beecee6ef914da32cc2e37f1d15ac1d9f6..ba57211dd064d664f353b99586b1db0475d25da6 100644 (file)
--- a/cpu/ppc4xx/cmd_chip_config.c
+++ b/cpu/ppc4xx/cmd_chip_config.c
@@ -52,6 +52,12 @@ static int do_chip_config(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
        int cur_config_nr = -1;
        u8 cur_config[CONFIG_4xx_CONFIG_BLOCKSIZE];
 
+       /*
+        * First switch to correct I2C bus. This is I2C bus 0
+        * for all currently available 4xx derivats.
+        */
+       I2C_SET_BUS(0);
+
 #ifdef CONFIG_CMD_EEPROM
        ret = eeprom_read(CONFIG_4xx_CONFIG_I2C_EEPROM_ADDR,
                          CONFIG_4xx_CONFIG_I2C_EEPROM_OFFSET,