From 1a332da61df9c38b567359af114daeaaaefaead8 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Mon, 29 Mar 2010 15:30:46 +0200 Subject: ppc4xx: Fix problem with I2C bus >= 1 initialization This patch fixes a problem introduced with patch eb5eb2b0 [ppc4xx: Cleanup PPC4xx I2C infrastructure]. We need to assign the I2C base address to the "i2c" pointer inside of the controller loop. Otherwise controller 0 is initialized multiple times instead of initializing each I2C controller sequentially. Tested on Katmai. Signed-off-by: Stefan Roese Acked-by: Heiko Schocher --- cpu/ppc4xx/i2c.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'cpu/ppc4xx') diff --git a/cpu/ppc4xx/i2c.c b/cpu/ppc4xx/i2c.c index 7976e75..9b86187 100644 --- a/cpu/ppc4xx/i2c.c +++ b/cpu/ppc4xx/i2c.c @@ -93,7 +93,7 @@ static void _i2c_bus_reset(void) void i2c_init(int speed, int slaveaddr) { - struct ppc4xx_i2c *i2c = (struct ppc4xx_i2c *)I2C_BASE_ADDR; + struct ppc4xx_i2c *i2c; int val, divisor; int bus; @@ -109,6 +109,9 @@ void i2c_init(int speed, int slaveaddr) for (bus = 0; bus < CONFIG_SYS_MAX_I2C_BUS; bus++) { I2C_SET_BUS(bus); + /* Set i2c pointer after calling I2C_SET_BUS() */ + i2c = (struct ppc4xx_i2c *)I2C_BASE_ADDR; + /* Handle possible failed I2C state */ /* FIXME: put this into i2c_init_board()? */ _i2c_bus_reset(); -- cgit v1.1