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Merge branch 'master' of git://git.denx.de/u-boot-i2c
* 'master' of git://git.denx.de/u-boot-i2c: Powerpc/i2c: Use the same initialize codes
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commit
36a9a15b7a
1 changed files with 25 additions and 22 deletions
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@ -214,11 +214,20 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c *dev,
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return speed;
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}
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unsigned int get_i2c_clock(int bus)
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{
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if (bus)
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return gd->i2c2_clk; /* I2C2 clock */
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else
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return gd->i2c1_clk; /* I2C1 clock */
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}
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void
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i2c_init(int speed, int slaveadd)
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{
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struct fsl_i2c *dev;
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unsigned int temp;
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int bus_num, i;
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#ifdef CONFIG_SYS_I2C_INIT_BOARD
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/* Call board specific i2c bus reset routine before accessing the
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@ -227,29 +236,23 @@ i2c_init(int speed, int slaveadd)
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*/
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i2c_init_board();
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#endif
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dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
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writeb(0, &dev->cr); /* stop I2C controller */
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udelay(5); /* let it shutdown in peace */
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temp = set_i2c_bus_speed(dev, gd->i2c1_clk, speed);
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if (gd->flags & GD_FLG_RELOC)
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i2c_bus_speed[0] = temp;
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writeb(slaveadd << 1, &dev->adr); /* write slave address */
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writeb(0x0, &dev->sr); /* clear status register */
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writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */
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#ifdef CONFIG_SYS_I2C2_OFFSET
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dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C2_OFFSET);
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writeb(0, &dev->cr); /* stop I2C controller */
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udelay(5); /* let it shutdown in peace */
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temp = set_i2c_bus_speed(dev, gd->i2c2_clk, speed);
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if (gd->flags & GD_FLG_RELOC)
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i2c_bus_speed[1] = temp;
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writeb(slaveadd << 1, &dev->adr); /* write slave address */
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writeb(0x0, &dev->sr); /* clear status register */
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writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */
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#ifdef CONFIG_SYS_I2C2_OFFSET
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bus_num = 2;
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#else
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bus_num = 1;
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#endif
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for (i = 0; i < bus_num; i++) {
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dev = i2c_dev[i];
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writeb(0, &dev->cr); /* stop I2C controller */
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udelay(5); /* let it shutdown in peace */
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temp = set_i2c_bus_speed(dev, get_i2c_clock(i), speed);
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if (gd->flags & GD_FLG_RELOC)
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i2c_bus_speed[i] = temp;
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writeb(slaveadd << 1, &dev->adr);/* write slave address */
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writeb(0x0, &dev->sr); /* clear status register */
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writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */
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}
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#ifdef CONFIG_SYS_I2C_BOARD_LATE_INIT
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/* Call board specific i2c bus reset routine AFTER the bus has been
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