i2c: ocores: Add support for bus clock via platform data

Add the I2C bus clock speed to the platform data structure.
If not set, default to 100KHz as before.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-ocores.c

@@ -628,6 +628,9 @@ static int ocores_i2c_probe(struct platform_device *pdev)
 		i2c->reg_shift = pdata->reg_shift;
 		i2c->reg_io_width = pdata->reg_io_width;
 		i2c->ip_clock_khz = pdata->clock_khz;
+		if (pdata->bus_khz)
+			i2c->bus_clock_khz = pdata->bus_khz;
+		else
 			i2c->bus_clock_khz = 100;
 	} else {
 		ret = ocores_i2c_of_probe(pdev, i2c);

include/linux/platform_data/i2c-ocores.h

@@ -12,6 +12,7 @@ struct ocores_i2c_platform_data {
 	u32 reg_shift; /* register offset shift value */
 	u32 reg_io_width; /* register io read/write width */
 	u32 clock_khz; /* input clock in kHz */
+	u32 bus_khz; /* bus clock in kHz */
 	bool big_endian; /* registers are big endian */
 	u8 num_devices; /* number of devices in the devices list */
 	struct i2c_board_info const *devices; /* devices connected to the bus */