#include <common.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
#include <asm/imx-common/mxc_i2c.h>
#include <asm/io.h>
#include <i2c.h>
#define IMX_I2C_REGSHIFT 2
#define VF610_I2C_REGSHIFT 0
+
+#define I2C_EARLY_INIT_INDEX 0
+#ifdef CONFIG_SYS_I2C_IFDR_DIV
+#define I2C_IFDR_DIV_CONSERVATIVE CONFIG_SYS_I2C_IFDR_DIV
+#else
+#define I2C_IFDR_DIV_CONSERVATIVE 0x7e
+#endif
+
/* Register index */
#define IADR 0
#define IFDR 1
#endif
static struct mxc_i2c_bus mxc_i2c_buses[] = {
-#if defined(CONFIG_LS102XA) || defined(CONFIG_VF610) || \
+#if defined(CONFIG_ARCH_LS1021A) || defined(CONFIG_VF610) || \
defined(CONFIG_FSL_LAYERSCAPE)
{ 0, I2C1_BASE_ADDR, I2C_QUIRK_FLAG },
{ 1, I2C2_BASE_ADDR, I2C_QUIRK_FLAG },
}
/*
+ * Early init I2C for prepare read the clk through I2C.
+ */
+void i2c_early_init_f(void)
+{
+ ulong base = mxc_i2c_buses[I2C_EARLY_INIT_INDEX].base;
+ bool quirk = mxc_i2c_buses[I2C_EARLY_INIT_INDEX].driver_data
+ & I2C_QUIRK_FLAG ? true : false;
+ int reg_shift = quirk ? VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT;
+
+ /* Set I2C divider value */
+ writeb(I2C_IFDR_DIV_CONSERVATIVE, base + (IFDR << reg_shift));
+ /* Reset module */
+ writeb(I2CR_IDIS, base + (I2CR << reg_shift));
+ writeb(0, base + (I2SR << reg_shift));
+ /* Enable I2C */
+ writeb(I2CR_IEN, base + (I2CR << reg_shift));
+}
+
+/*
* Init I2C Bus
*/
static void mxc_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr)
{
struct mxc_i2c_bus *i2c_bus = dev_get_priv(bus);
const void *fdt = gd->fdt_blob;
- int node = bus->of_offset;
+ int node = dev_of_offset(bus);
fdt_addr_t addr;
int ret, ret2;
* See Documentation/devicetree/bindings/i2c/i2c-imx.txt
* Use gpio to force bus idle when necessary.
*/
- ret = fdt_find_string(fdt, node, "pinctrl-names", "gpio");
+ ret = fdt_stringlist_search(fdt, node, "pinctrl-names", "gpio");
if (ret < 0) {
- dev_info(dev, "i2c bus %d at %lu, no gpio pinctrl state.\n", bus->seq, i2c_bus->base);
+ debug("i2c bus %d at 0x%2lx, no gpio pinctrl state.\n", bus->seq, i2c_bus->base);
} else {
ret = gpio_request_by_name_nodev(fdt, node, "scl-gpios",
0, &i2c_bus->scl_gpio,