diff options
Diffstat (limited to 'drivers/i2c/mxc_i2c.c')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index 1f6ba1f39..8e10fbb21 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -47,14 +47,17 @@ #define I2SR_IIF (1 << 1) #define I2SR_RX_NO_AK (1 << 0) -#ifdef CFG_I2C_MX31_PORT1 +#ifdef CONFIG_SYS_I2C_MX31_PORT1 #define I2C_BASE 0x43f80000 -#elif defined (CFG_I2C_MX31_PORT2) +#define I2C_CLK_OFFSET 26 +#elif defined (CONFIG_SYS_I2C_MX31_PORT2) #define I2C_BASE 0x43f98000 -#elif defined (CFG_I2C_MX31_PORT3) +#define I2C_CLK_OFFSET 28 +#elif defined (CONFIG_SYS_I2C_MX31_PORT3) #define I2C_BASE 0x43f84000 +#define I2C_CLK_OFFSET 30 #else -#error "define CFG_I2C_MX31_PORTx to use the mx31 I2C driver" +#error "define CONFIG_SYS_I2C_MX31_PORTx to use the mx31 I2C driver" #endif #ifdef DEBUG @@ -72,6 +75,9 @@ void i2c_init(int speed, int unused) int freq = mx31_get_ipg_clk(); int i; + /* start the required I2C clock */ + __REG(CCM_CGR0) = __REG(CCM_CGR0) | (3 << I2C_CLK_OFFSET); + for (i = 0; i < 0x1f; i++) if (freq / div[i] <= speed) break; |