diff options
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 6 | ||||
| -rw-r--r-- | include/i2c.h | 14 |
2 files changed, 6 insertions, 14 deletions
diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c index eedad06..8e10fbb 100644 --- a/drivers/i2c/mxc_i2c.c +++ b/drivers/i2c/mxc_i2c.c @@ -49,10 +49,13 @@ #ifdef CONFIG_SYS_I2C_MX31_PORT1 #define I2C_BASE 0x43f80000 +#define I2C_CLK_OFFSET 26 #elif defined (CONFIG_SYS_I2C_MX31_PORT2) #define I2C_BASE 0x43f98000 +#define I2C_CLK_OFFSET 28 #elif defined (CONFIG_SYS_I2C_MX31_PORT3) #define I2C_BASE 0x43f84000 +#define I2C_CLK_OFFSET 30 #else #error "define CONFIG_SYS_I2C_MX31_PORTx to use the mx31 I2C driver" #endif @@ -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; diff --git a/include/i2c.h b/include/i2c.h index fad2d57..f8a59a6 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -159,14 +159,7 @@ static inline u8 i2c_reg_read(u8 addr, u8 reg) printf("%s: addr=0x%02x, reg=0x%02x\n", __func__, addr, reg); #endif -#ifdef CONFIG_BLACKFIN - /* This ifdef will become unneccessary in a future version of the - * blackfin I2C driver. - */ - i2c_read(addr, reg, 0, &buf, 1); -#else i2c_read(addr, reg, 1, &buf, 1); -#endif return buf; } @@ -183,14 +176,7 @@ static inline void i2c_reg_write(u8 addr, u8 reg, u8 val) __func__, addr, reg, val); #endif -#ifdef CONFIG_BLACKFIN - /* This ifdef will become unneccessary in a future version of the - * blackfin I2C driver. - */ - i2c_write(addr, reg, 0, &val, 1); -#else i2c_write(addr, reg, 1, &val, 1); -#endif } /* |