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ppc4xx: Fix problem with I2C bus >= 1 initialization

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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 <sr@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Stefan Roese 2010-03-29 15:30:46 +02:00
parent 060f28532b
commit 1a332da61d
1 changed files with 4 additions and 1 deletions
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5
cpu/ppc4xx/i2c.c
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@ -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();