Re: [U-Boot] [PATCH 10/13 v5] ARM: OMAP3: Add BeagleBoard

• • Description: Early hardware init.
• *****************************************************************************/

+int board_init(void) +{

• DECLARE_GLOBAL_DATA_PTR;
• gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
• /* board id for Linux */
• gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
• /* boot param addr */
• gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
• return 0;

+}

+/******************************************************************************

• • Routine: misc_init_r
• • Description: Init ethernet (done here so udelay works)
• *****************************************************************************/

+int misc_init_r(void) +{

• unsigned char byte;

+#ifdef CONFIG_DRIVER_OMAP34XX_I2C

• i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);

+#endif

• /* set vaux3 to 2.8V */
• byte = 0x20;
• i2c_write(0x4B, 0x7A, 1, &byte, 1);
• byte = 0x03;
• i2c_write(0x4B, 0x7D, 1, &byte, 1);
• /* set vpll2 to 1.8V */
• byte = 0xE0;
• i2c_write(0x4B, 0x8E, 1, &byte, 1);
• byte = 0x05;
• i2c_write(0x4B, 0x91, 1, &byte, 1);
• /* set VDAC to 1.8V */
• byte = 0x20;
• i2c_write(0x4B, 0x96, 1, &byte, 1);
• byte = 0x03;
• i2c_write(0x4B, 0x99, 1, &byte, 1);
• byte = 0x33;
• i2c_write(0x4A, 0xEE, 1, &byte, 1);

please a comment to explain what you do by I2C

Best Reagers, J.