+static int __init omap_i2c_nr_ports(void)
+{
+ int ports = 0;
+
+ if (cpu_class_is_omap1())
+ ports = 1;
+ else if (cpu_is_omap24xx())
+ ports = 2;
+ else if (cpu_is_omap34xx())
+ ports = 3;
+
+ return ports;
+}
+
+/**
+ * omap_i2c_bus_setup - Process command line options for the I2C bus speed
+ * @str: String of options
+ *
+ * This function allow to override the default I2C bus speed for given I2C
+ * bus with a command line option.
+ *
+ * Format: i2c_bus=bus_id,clkrate (in kHz)
+ *
+ * Returns 1 on success, 0 otherwise.
+ */
+static int __init omap_i2c_bus_setup(char *str)
+{
+ int ports;
+ int ints[3];
+
+ ports = omap_i2c_nr_ports();
+ get_options(str, 3, ints);
+ if (ints[0] < 2 || ints[1] < 1 || ints[1] > ports)
+ return 0;
+ i2c_rate[ints[1] - 1] = ints[2];
+
+ return 1;
+}
+__setup("i2c_bus=", omap_i2c_bus_setup);
+