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| author | Wolfgang Denk <wd@denx.de> | 2009-02-15 22:21:17 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2009-02-15 22:21:17 +0100 |
| commit | f8eab9c3e15db68d20cad8e257da228b518cde85 (patch) | |
| tree | 33b0e4ebcc0e32d448e54794089b31ada9f8b91f /drivers | |
| parent | 6b67962fd69ac0bcdf1a982669a029c2f0a7bcc1 (diff) | |
| parent | e7de18afe8ecf96a51ef981d06066eeb6b1254e7 (diff) | |
| download | u-boot-imx-f8eab9c3e15db68d20cad8e257da228b518cde85.zip u-boot-imx-f8eab9c3e15db68d20cad8e257da228b518cde85.tar.gz u-boot-imx-f8eab9c3e15db68d20cad8e257da228b518cde85.tar.bz2 | |
Merge branch 'master' of git://git.denx.de/u-boot-i2c
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/mxc_i2c.c | 6 |
1 files changed, 6 insertions, 0 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; |