};
/* i2c_index can be from 0 - 2 */
-void setup_i2c(unsigned i2c_index, int speed, int slave_addr,
- struct i2c_pads_info *p)
+int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
+ struct i2c_pads_info *p)
{
+ int ret;
+
if (i2c_index >= ARRAY_SIZE(i2c_bases))
- return;
+ return -EINVAL;
/* Enable i2c clock */
- enable_i2c_clk(1, i2c_index);
+ ret = enable_i2c_clk(1, i2c_index);
+ if (ret)
+ goto err_clk;
+
/* Make sure bus is idle */
- force_idle_bus(p);
+ ret = force_idle_bus(p);
+ if (ret)
+ goto err_idle;
+
bus_i2c_init(i2c_bases[i2c_index], speed, slave_addr,
force_idle_bus, p);
+
+ return 0;
+
+err_idle:
+err_clk:
+ return ret;
}
&mx6q_##name : &mx6s_##name
#endif
-void setup_i2c(unsigned i2c_index, int speed, int slave_addr,
- struct i2c_pads_info *p);
+int setup_i2c(unsigned i2c_index, int speed, int slave_addr,
+ struct i2c_pads_info *p);
void bus_i2c_init(void *base, int speed, int slave_addr,
int (*idle_bus_fn)(void *p), void *p);
int bus_i2c_read(void *base, uchar chip, uint addr, int alen, uchar *buf,
IMX_GPIO_NR(1, 6));
-static void cm_fx6_setup_i2c(void)
+static int cm_fx6_setup_one_i2c(int busnum, struct i2c_pads_info *pads)
{
- setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c0_pads));
- setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c1_pads));
- setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, I2C_PADS_INFO(i2c2_pads));
+ int ret;
+
+ ret = setup_i2c(busnum, CONFIG_SYS_I2C_SPEED, 0x7f, pads);
+ if (ret)
+ printf("Warning: I2C%d setup failed: %d\n", busnum, ret);
+
+ return ret;
+}
+
+static int cm_fx6_setup_i2c(void)
+{
+ int ret = 0, err;
+
+ /* i2c<x>_pads are wierd macro variables; we can't use an array */
+ err = cm_fx6_setup_one_i2c(0, I2C_PADS_INFO(i2c0_pads));
+ if (err)
+ ret = err;
+ err = cm_fx6_setup_one_i2c(1, I2C_PADS_INFO(i2c1_pads));
+ if (err)
+ ret = err;
+ err = cm_fx6_setup_one_i2c(2, I2C_PADS_INFO(i2c2_pads));
+ if (err)
+ ret = err;
+
+ return ret;
}
#else
-static void cm_fx6_setup_i2c(void) { }
+static int cm_fx6_setup_i2c(void) { return 0; }
#endif
#ifdef CONFIG_USB_EHCI_MX6
int board_init(void)
{
+ int ret;
+
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
cm_fx6_setup_gpmi_nand();
- cm_fx6_setup_i2c();
+
+ /* Warn on failure but do not abort boot */
+ ret = cm_fx6_setup_i2c();
+ if (ret)
+ printf("Warning: I2C setup failed: %d\n", ret);
return 0;
}