board/freescale/common/vsc3316_3308.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2012 Freescale Semiconductor, Inc.
  * Copyright 2020 NXP
  */

 #include "vsc3316_3308.h"

 #define REVISION_ID_REG		0x7E
 #define INTERFACE_MODE_REG		0x79
 #define CURRENT_PAGE_REGISTER		0x7F
 #define CONNECTION_CONFIG_PAGE		0x00
 #define INPUT_STATE_REG		0x13
 #define GLOBAL_INPUT_ISE1		0x51
 #define GLOBAL_INPUT_ISE2		0x52
 #define GLOBAL_INPUT_GAIN		0x53
 #define GLOBAL_INPUT_LOS		0x55
 #define GLOBAL_OUTPUT_PE1		0x56
 #define GLOBAL_OUTPUT_PE2		0x57
 #define GLOBAL_OUTPUT_LEVEL		0x58
 #define GLOBAL_OUTPUT_TERMINATION	0x5A
 #define GLOBAL_CORE_CNTRL		0x5D
 #define OUTPUT_MODE_PAGE		0x23
 #define CORE_CONTROL_PAGE		0x25
 #define CORE_CONFIG_REG		0x75

 int vsc_if_enable(unsigned int vsc_addr)
 {
 	u8 data;

 	debug("VSC:Configuring VSC at I2C address 0x%2x"
 			" for 2-wire interface\n", vsc_addr);

 	/* enable 2-wire Serial InterFace (I2C) */
 	data = 0x02;
 #ifdef CONFIG_DM_I2C
 	int ret, bus_num = 0;
 	struct udevice *dev;

 	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
 				      1, &dev);
 	if (ret) {
 		printf("%s: Cannot find udev for a bus %d\n", __func__,
 		       bus_num);
 		return ret;
 	}

 	return dm_i2c_write(dev, INTERFACE_MODE_REG, &data, 1);
 #else
 	return i2c_write(vsc_addr, INTERFACE_MODE_REG, 1, &data, 1);
 #endif
 }

 int vsc3316_config(unsigned int vsc_addr, int8_t con_arr[][2],
 		unsigned int num_con)
 {
 	unsigned int i;
 	u8 rev_id = 0;
 	int ret;

 	debug("VSC:Initializing VSC3316 at I2C address 0x%2x"
 		" for Tx\n", vsc_addr);

 #ifdef CONFIG_DM_I2C
 	int bus_num = 0;
 	struct udevice *dev;

 	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
 				      1, &dev);
 	if (ret) {
 		printf("%s: Cannot find udev for a bus %d\n", __func__,
 		       bus_num);
 		return ret;
 	}

 	ret = dm_i2c_read(dev, REVISION_ID_REG, &rev_id, 1);
 	if (ret < 0) {
 		printf("VSC:0x%x could not read REV_ID from device.\n",
 		       vsc_addr);
 		return ret;
 	}

 	if (rev_id != 0xab) {
 		printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 		       vsc_addr);
 		return -ENODEV;
 	}

 	ret = vsc_if_enable(vsc_addr);
 	if (ret) {
 		printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 		       vsc_addr);
 		return ret;
 	}

 	/* config connections - page 0x00 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

 	/* Making crosspoint connections, by connecting required
 	 * input to output
 	 */
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev, con_arr[i][1], con_arr[i][0]);

 	/* input state - page 0x13 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 	/* Configuring the required input of the switch */
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev, con_arr[i][0], 0x80);

 	/* Setting Global Input LOS threshold value */
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_LOS, 0x60);

 	/* config output mode - page 0x23 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 	/* Turn ON the Output driver correspond to required output*/
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev,  con_arr[i][1], 0);

 	/* configure global core control register, Turn on Global core power */
 	dm_i2c_reg_write(dev, GLOBAL_CORE_CNTRL, 0);

 #else
 	ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 	if (ret < 0) {
 		printf("VSC:0x%x could not read REV_ID from device.\n",
 			vsc_addr);
 		return ret;
 	}

 	if (rev_id != 0xab) {
 		printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 			vsc_addr);
 		return -ENODEV;
 	}

 	ret = vsc_if_enable(vsc_addr);
 	if (ret) {
 		printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 			vsc_addr);
 		return ret;
 	}

 	/* config connections - page 0x00 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

 	/* Making crosspoint connections, by connecting required
 	 * input to output */
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);

 	/* input state - page 0x13 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 	/* Configuring the required input of the switch */
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr, con_arr[i][0], 0x80);

 	/* Setting Global Input LOS threshold value */
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);

 	/* config output mode - page 0x23 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 	/* Turn ON the Output driver correspond to required output*/
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr,  con_arr[i][1], 0);

 	/* configure global core control register, Turn on Global core power */
 	i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 #endif

 	vsc_wp_config(vsc_addr);

 	return 0;
 }

 #ifdef CONFIG_SYS_FSL_B4860QDS_XFI_ERR
 int vsc3308_config_adjust(unsigned int vsc_addr, const int8_t con_arr[][2],
 		unsigned int num_con)
 {
 	unsigned int i;
 	u8 rev_id = 0;
 	int ret;

 	debug("VSC:Initializing VSC3308 at I2C address 0x%x for Tx\n",
 	      vsc_addr);

 #ifdef CONFIG_DM_I2C
 	int bus_num = 0;
 	struct udevice *dev;

 	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
 				      1, &dev);
 	if (ret) {
 		printf("%s: Cannot find udev for a bus %d\n", __func__,
 		       bus_num);
 		return ret;
 	}

 	ret = dm_i2c_read(dev, REVISION_ID_REG, &rev_id, 1);
 	if (ret < 0) {
 		printf("VSC:0x%x could not read REV_ID from device.\n",
 		       vsc_addr);
 		return ret;
 	}

 	if (rev_id != 0xab) {
 		printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 		       vsc_addr);
 		return -ENODEV;
 	}

 	ret = vsc_if_enable(vsc_addr);
 	if (ret) {
 		printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 		       vsc_addr);
 		return ret;
 	}

 	/* config connections - page 0x00 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

 	/* Configure Global Input ISE */
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE1, 0);
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE2, 0);

 	/* Configure Tx/Rx Global Output PE1 */
 	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_PE1, 0);

 	/* Configure Tx/Rx Global Output PE2 */
 	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_PE2, 0);

 	/* Configure Tx/Rx Global Input GAIN */
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_GAIN, 0x3F);

 	/* Setting Global Input LOS threshold value */
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_LOS, 0xE0);

 	/* Setting Global output termination */
 	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_TERMINATION, 0);

 	/* Configure Tx/Rx Global Output level */
 	if (vsc_addr == VSC3308_TX_ADDRESS)
 		dm_i2c_reg_write(dev, GLOBAL_OUTPUT_LEVEL, 4);
 	else
 		dm_i2c_reg_write(dev, GLOBAL_OUTPUT_LEVEL, 2);

 	/* Making crosspoint connections, by connecting required
 	 * input to output
 	 */
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev, con_arr[i][1], con_arr[i][0]);

 	/* input state - page 0x13 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 	/* Turning off all the required input of the switch */
 	for (i = 0; i < num_con; i++)
 		dm_i2c_reg_write(dev, con_arr[i][0], 1);

 	/* only turn on specific Tx/Rx requested by the XFI erratum */
 	if (vsc_addr == VSC3308_TX_ADDRESS) {
 		dm_i2c_reg_write(dev, 2, 0);
 		dm_i2c_reg_write(dev, 3, 0);
 	} else {
 		dm_i2c_reg_write(dev, 0, 0);
 		dm_i2c_reg_write(dev, 1, 0);
 	}

 	/* config output mode - page 0x23 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 	/* Turn off the Output driver correspond to required output*/
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev,  con_arr[i][1], 1);

 	/* only turn on specific Tx/Rx requested by the XFI erratum */
 	if (vsc_addr == VSC3308_TX_ADDRESS) {
 		dm_i2c_reg_write(dev, 0, 0);
 		dm_i2c_reg_write(dev, 1, 0);
 	} else {
 		dm_i2c_reg_write(dev, 3, 0);
 		dm_i2c_reg_write(dev, 4, 0);
 	}

 	/* configure global core control register, Turn on Global core power */
 	dm_i2c_reg_write(dev, GLOBAL_CORE_CNTRL, 0);
 #else
 	ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 	if (ret < 0) {
 		printf("VSC:0x%x could not read REV_ID from device.\n",
 		       vsc_addr);
 		return ret;
 	}

 	if (rev_id != 0xab) {
 		printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 		       vsc_addr);
 		return -ENODEV;
 	}

 	ret = vsc_if_enable(vsc_addr);
 	if (ret) {
 		printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 		       vsc_addr);
 		return ret;
 	}

 	/* config connections - page 0x00 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

 	/* Configure Global Input ISE */
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0);
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0);

 	/* Configure Tx/Rx Global Output PE1 */
 	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE1, 0);

 	/* Configure Tx/Rx Global Output PE2 */
 	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE2, 0);

 	/* Configure Tx/Rx Global Input GAIN */
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_GAIN, 0x3F);

 	/* Setting Global Input LOS threshold value */
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0xE0);

 	/* Setting Global output termination */
 	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_TERMINATION, 0);

 	/* Configure Tx/Rx Global Output level */
 	if (vsc_addr == VSC3308_TX_ADDRESS)
 		i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 4);
 	else
 		i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 2);

 	/* Making crosspoint connections, by connecting required
 	 * input to output */
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);

 	/* input state - page 0x13 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 	/* Turning off all the required input of the switch */
 	for (i = 0; i < num_con; i++)
 		i2c_reg_write(vsc_addr, con_arr[i][0], 1);

 	/* only turn on specific Tx/Rx requested by the XFI erratum */
 	if (vsc_addr == VSC3308_TX_ADDRESS) {
 		i2c_reg_write(vsc_addr, 2, 0);
 		i2c_reg_write(vsc_addr, 3, 0);
 	} else {
 		i2c_reg_write(vsc_addr, 0, 0);
 		i2c_reg_write(vsc_addr, 1, 0);
 	}

 	/* config output mode - page 0x23 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 	/* Turn off the Output driver correspond to required output*/
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr,  con_arr[i][1], 1);

 	/* only turn on specific Tx/Rx requested by the XFI erratum */
 	if (vsc_addr == VSC3308_TX_ADDRESS) {
 		i2c_reg_write(vsc_addr, 0, 0);
 		i2c_reg_write(vsc_addr, 1, 0);
 	} else {
 		i2c_reg_write(vsc_addr, 3, 0);
 		i2c_reg_write(vsc_addr, 4, 0);
 	}

 	/* configure global core control register, Turn on Global core power */
 	i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 #endif
 	vsc_wp_config(vsc_addr);

 	return 0;
 }
 #endif

 int vsc3308_config(unsigned int vsc_addr, const int8_t con_arr[][2],
 		unsigned int num_con)
 {
 	unsigned int i;
 	u8 rev_id = 0;
 	int ret;

 	debug("VSC:Initializing VSC3308 at I2C address 0x%x"
 		" for Tx\n", vsc_addr);
 #ifdef CONFIG_DM_I2C
 	int bus_num = 0;
 	struct udevice *dev;

 	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
 				      1, &dev);
 	if (ret) {
 		printf("%s: Cannot find udev for a bus %d\n", __func__,
 		       bus_num);
 		return ret;
 	}

 	ret = dm_i2c_read(dev, REVISION_ID_REG, &rev_id, 1);
 	if (ret < 0) {
 		printf("VSC:0x%x could not read REV_ID from device.\n",
 		       vsc_addr);
 		return ret;
 	}

 	if (rev_id != 0xab) {
 		printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 		       vsc_addr);
 		return -ENODEV;
 	}

 	ret = vsc_if_enable(vsc_addr);
 	if (ret) {
 		printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 		       vsc_addr);
 		return ret;
 	}

 	/* config connections - page 0x00 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

 	/* Making crosspoint connections, by connecting required
 	 * input to output
 	 */
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev, con_arr[i][1], con_arr[i][0]);

 	/*Configure Global Input ISE and gain */
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE1, 0x12);
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE2, 0x12);

 	/* input state - page 0x13 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 	/* Turning ON the required input of the switch */
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev, con_arr[i][0], 0);

 	/* Setting Global Input LOS threshold value */
 	dm_i2c_reg_write(dev, GLOBAL_INPUT_LOS, 0x60);

 	/* config output mode - page 0x23 */
 	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 	/* Turn ON the Output driver correspond to required output*/
 	for (i = 0; i < num_con ; i++)
 		dm_i2c_reg_write(dev,  con_arr[i][1], 0);

 	/* configure global core control register, Turn on Global core power */
 	dm_i2c_reg_write(dev, GLOBAL_CORE_CNTRL, 0);
 #else
 	ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 	if (ret < 0) {
 		printf("VSC:0x%x could not read REV_ID from device.\n",
 			vsc_addr);
 		return ret;
 	}

 	if (rev_id != 0xab) {
 		printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 			vsc_addr);
 		return -ENODEV;
 	}

 	ret = vsc_if_enable(vsc_addr);
 	if (ret) {
 		printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 			vsc_addr);
 		return ret;
 	}

 	/* config connections - page 0x00 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

 	/* Making crosspoint connections, by connecting required
 	 * input to output */
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);

 	/*Configure Global Input ISE and gain */
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0x12);
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0x12);

 	/* input state - page 0x13 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 	/* Turning ON the required input of the switch */
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr, con_arr[i][0], 0);

 	/* Setting Global Input LOS threshold value */
 	i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);

 	/* config output mode - page 0x23 */
 	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 	/* Turn ON the Output driver correspond to required output*/
 	for (i = 0; i < num_con ; i++)
 		i2c_reg_write(vsc_addr,  con_arr[i][1], 0);

 	/* configure global core control register, Turn on Global core power */
 	i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 #endif
 	vsc_wp_config(vsc_addr);

 	return 0;
 }

 void vsc_wp_config(unsigned int vsc_addr)
 {
 	debug("VSC:Configuring VSC at address:0x%x for WP\n", vsc_addr);

 	/* For new crosspoint configuration to occur, WP bit of
 	 * CORE_CONFIG_REG should be set 1 and then reset to 0 */
 #ifdef CONFIG_DM_I2C
 	int ret, bus_num = 0;
 	struct udevice *dev;

 	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
 				      1, &dev);
 	if (ret) {
 		printf("%s: Cannot find udev for a bus %d\n", __func__,
 		       bus_num);
 		return;
 	}

 	dm_i2c_reg_write(dev, CORE_CONFIG_REG, 0x01);
 	dm_i2c_reg_write(dev, CORE_CONFIG_REG, 0x0);
 #else
 	i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x01);
 	i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x0);
 #endif
 }
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright 2012 Freescale Semiconductor, Inc.
	* Copyright 2020 NXP
	*/

	#include "vsc3316_3308.h"

	#define REVISION_ID_REG 0x7E
	#define INTERFACE_MODE_REG 0x79
	#define CURRENT_PAGE_REGISTER 0x7F
	#define CONNECTION_CONFIG_PAGE 0x00
	#define INPUT_STATE_REG 0x13
	#define GLOBAL_INPUT_ISE1 0x51
	#define GLOBAL_INPUT_ISE2 0x52
	#define GLOBAL_INPUT_GAIN 0x53
	#define GLOBAL_INPUT_LOS 0x55
	#define GLOBAL_OUTPUT_PE1 0x56
	#define GLOBAL_OUTPUT_PE2 0x57
	#define GLOBAL_OUTPUT_LEVEL 0x58
	#define GLOBAL_OUTPUT_TERMINATION 0x5A
	#define GLOBAL_CORE_CNTRL 0x5D
	#define OUTPUT_MODE_PAGE 0x23
	#define CORE_CONTROL_PAGE 0x25
	#define CORE_CONFIG_REG 0x75

	int vsc_if_enable(unsigned int vsc_addr)
	{
	u8 data;

	debug("VSC:Configuring VSC at I2C address 0x%2x"
	" for 2-wire interface\n", vsc_addr);

	/* enable 2-wire Serial InterFace (I2C) */
	data = 0x02;
	#ifdef CONFIG_DM_I2C
	int ret, bus_num = 0;
	struct udevice *dev;

	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
	1, &dev);
	if (ret) {
	printf("%s: Cannot find udev for a bus %d\n", __func__,
	bus_num);
	return ret;
	}

	return dm_i2c_write(dev, INTERFACE_MODE_REG, &data, 1);
	#else
	return i2c_write(vsc_addr, INTERFACE_MODE_REG, 1, &data, 1);
	#endif
	}

	int vsc3316_config(unsigned int vsc_addr, int8_t con_arr[][2],
	unsigned int num_con)
	{
	unsigned int i;
	u8 rev_id = 0;
	int ret;

	debug("VSC:Initializing VSC3316 at I2C address 0x%2x"
	" for Tx\n", vsc_addr);

	#ifdef CONFIG_DM_I2C
	int bus_num = 0;
	struct udevice *dev;

	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
	1, &dev);
	if (ret) {
	printf("%s: Cannot find udev for a bus %d\n", __func__,
	bus_num);
	return ret;
	}

	ret = dm_i2c_read(dev, REVISION_ID_REG, &rev_id, 1);
	if (ret < 0) {
	printf("VSC:0x%x could not read REV_ID from device.\n",
	vsc_addr);
	return ret;
	}

	if (rev_id != 0xab) {
	printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
	vsc_addr);
	return -ENODEV;
	}

	ret = vsc_if_enable(vsc_addr);
	if (ret) {
	printf("VSC:0x%x could not configured for 2-wire I/F.\n",
	vsc_addr);
	return ret;
	}

	/* config connections - page 0x00 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

	/* Making crosspoint connections, by connecting required
	* input to output
	*/
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][1], con_arr[i][0]);

	/* input state - page 0x13 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
	/* Configuring the required input of the switch */
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][0], 0x80);

	/* Setting Global Input LOS threshold value */
	dm_i2c_reg_write(dev, GLOBAL_INPUT_LOS, 0x60);

	/* config output mode - page 0x23 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
	/* Turn ON the Output driver correspond to required output*/
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][1], 0);

	/* configure global core control register, Turn on Global core power */
	dm_i2c_reg_write(dev, GLOBAL_CORE_CNTRL, 0);

	#else
	ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
	if (ret < 0) {
	printf("VSC:0x%x could not read REV_ID from device.\n",
	vsc_addr);
	return ret;
	}

	if (rev_id != 0xab) {
	printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
	vsc_addr);
	return -ENODEV;
	}

	ret = vsc_if_enable(vsc_addr);
	if (ret) {
	printf("VSC:0x%x could not configured for 2-wire I/F.\n",
	vsc_addr);
	return ret;
	}

	/* config connections - page 0x00 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

	/* Making crosspoint connections, by connecting required
	* input to output */
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);

	/* input state - page 0x13 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
	/* Configuring the required input of the switch */
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][0], 0x80);

	/* Setting Global Input LOS threshold value */
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);

	/* config output mode - page 0x23 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
	/* Turn ON the Output driver correspond to required output*/
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][1], 0);

	/* configure global core control register, Turn on Global core power */
	i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
	#endif

	vsc_wp_config(vsc_addr);

	return 0;
	}

	#ifdef CONFIG_SYS_FSL_B4860QDS_XFI_ERR
	int vsc3308_config_adjust(unsigned int vsc_addr, const int8_t con_arr[][2],
	unsigned int num_con)
	{
	unsigned int i;
	u8 rev_id = 0;
	int ret;

	debug("VSC:Initializing VSC3308 at I2C address 0x%x for Tx\n",
	vsc_addr);

	#ifdef CONFIG_DM_I2C
	int bus_num = 0;
	struct udevice *dev;

	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
	1, &dev);
	if (ret) {
	printf("%s: Cannot find udev for a bus %d\n", __func__,
	bus_num);
	return ret;
	}

	ret = dm_i2c_read(dev, REVISION_ID_REG, &rev_id, 1);
	if (ret < 0) {
	printf("VSC:0x%x could not read REV_ID from device.\n",
	vsc_addr);
	return ret;
	}

	if (rev_id != 0xab) {
	printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
	vsc_addr);
	return -ENODEV;
	}

	ret = vsc_if_enable(vsc_addr);
	if (ret) {
	printf("VSC:0x%x could not configured for 2-wire I/F.\n",
	vsc_addr);
	return ret;
	}

	/* config connections - page 0x00 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

	/* Configure Global Input ISE */
	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE1, 0);
	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE2, 0);

	/* Configure Tx/Rx Global Output PE1 */
	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_PE1, 0);

	/* Configure Tx/Rx Global Output PE2 */
	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_PE2, 0);

	/* Configure Tx/Rx Global Input GAIN */
	dm_i2c_reg_write(dev, GLOBAL_INPUT_GAIN, 0x3F);

	/* Setting Global Input LOS threshold value */
	dm_i2c_reg_write(dev, GLOBAL_INPUT_LOS, 0xE0);

	/* Setting Global output termination */
	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_TERMINATION, 0);

	/* Configure Tx/Rx Global Output level */
	if (vsc_addr == VSC3308_TX_ADDRESS)
	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_LEVEL, 4);
	else
	dm_i2c_reg_write(dev, GLOBAL_OUTPUT_LEVEL, 2);

	/* Making crosspoint connections, by connecting required
	* input to output
	*/
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][1], con_arr[i][0]);

	/* input state - page 0x13 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
	/* Turning off all the required input of the switch */
	for (i = 0; i < num_con; i++)
	dm_i2c_reg_write(dev, con_arr[i][0], 1);

	/* only turn on specific Tx/Rx requested by the XFI erratum */
	if (vsc_addr == VSC3308_TX_ADDRESS) {
	dm_i2c_reg_write(dev, 2, 0);
	dm_i2c_reg_write(dev, 3, 0);
	} else {
	dm_i2c_reg_write(dev, 0, 0);
	dm_i2c_reg_write(dev, 1, 0);
	}

	/* config output mode - page 0x23 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
	/* Turn off the Output driver correspond to required output*/
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][1], 1);

	/* only turn on specific Tx/Rx requested by the XFI erratum */
	if (vsc_addr == VSC3308_TX_ADDRESS) {
	dm_i2c_reg_write(dev, 0, 0);
	dm_i2c_reg_write(dev, 1, 0);
	} else {
	dm_i2c_reg_write(dev, 3, 0);
	dm_i2c_reg_write(dev, 4, 0);
	}

	/* configure global core control register, Turn on Global core power */
	dm_i2c_reg_write(dev, GLOBAL_CORE_CNTRL, 0);
	#else
	ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
	if (ret < 0) {
	printf("VSC:0x%x could not read REV_ID from device.\n",
	vsc_addr);
	return ret;
	}

	if (rev_id != 0xab) {
	printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
	vsc_addr);
	return -ENODEV;
	}

	ret = vsc_if_enable(vsc_addr);
	if (ret) {
	printf("VSC:0x%x could not configured for 2-wire I/F.\n",
	vsc_addr);
	return ret;
	}

	/* config connections - page 0x00 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

	/* Configure Global Input ISE */
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0);
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0);

	/* Configure Tx/Rx Global Output PE1 */
	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE1, 0);

	/* Configure Tx/Rx Global Output PE2 */
	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE2, 0);

	/* Configure Tx/Rx Global Input GAIN */
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_GAIN, 0x3F);

	/* Setting Global Input LOS threshold value */
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0xE0);

	/* Setting Global output termination */
	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_TERMINATION, 0);

	/* Configure Tx/Rx Global Output level */
	if (vsc_addr == VSC3308_TX_ADDRESS)
	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 4);
	else
	i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 2);

	/* Making crosspoint connections, by connecting required
	* input to output */
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);

	/* input state - page 0x13 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
	/* Turning off all the required input of the switch */
	for (i = 0; i < num_con; i++)
	i2c_reg_write(vsc_addr, con_arr[i][0], 1);

	/* only turn on specific Tx/Rx requested by the XFI erratum */
	if (vsc_addr == VSC3308_TX_ADDRESS) {
	i2c_reg_write(vsc_addr, 2, 0);
	i2c_reg_write(vsc_addr, 3, 0);
	} else {
	i2c_reg_write(vsc_addr, 0, 0);
	i2c_reg_write(vsc_addr, 1, 0);
	}

	/* config output mode - page 0x23 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
	/* Turn off the Output driver correspond to required output*/
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][1], 1);

	/* only turn on specific Tx/Rx requested by the XFI erratum */
	if (vsc_addr == VSC3308_TX_ADDRESS) {
	i2c_reg_write(vsc_addr, 0, 0);
	i2c_reg_write(vsc_addr, 1, 0);
	} else {
	i2c_reg_write(vsc_addr, 3, 0);
	i2c_reg_write(vsc_addr, 4, 0);
	}

	/* configure global core control register, Turn on Global core power */
	i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
	#endif
	vsc_wp_config(vsc_addr);

	return 0;
	}
	#endif

	int vsc3308_config(unsigned int vsc_addr, const int8_t con_arr[][2],
	unsigned int num_con)
	{
	unsigned int i;
	u8 rev_id = 0;
	int ret;

	debug("VSC:Initializing VSC3308 at I2C address 0x%x"
	" for Tx\n", vsc_addr);
	#ifdef CONFIG_DM_I2C
	int bus_num = 0;
	struct udevice *dev;

	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
	1, &dev);
	if (ret) {
	printf("%s: Cannot find udev for a bus %d\n", __func__,
	bus_num);
	return ret;
	}

	ret = dm_i2c_read(dev, REVISION_ID_REG, &rev_id, 1);
	if (ret < 0) {
	printf("VSC:0x%x could not read REV_ID from device.\n",
	vsc_addr);
	return ret;
	}

	if (rev_id != 0xab) {
	printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
	vsc_addr);
	return -ENODEV;
	}

	ret = vsc_if_enable(vsc_addr);
	if (ret) {
	printf("VSC:0x%x could not configured for 2-wire I/F.\n",
	vsc_addr);
	return ret;
	}

	/* config connections - page 0x00 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

	/* Making crosspoint connections, by connecting required
	* input to output
	*/
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][1], con_arr[i][0]);

	/Configure Global Input ISE and gain /
	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE1, 0x12);
	dm_i2c_reg_write(dev, GLOBAL_INPUT_ISE2, 0x12);

	/* input state - page 0x13 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
	/* Turning ON the required input of the switch */
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][0], 0);

	/* Setting Global Input LOS threshold value */
	dm_i2c_reg_write(dev, GLOBAL_INPUT_LOS, 0x60);

	/* config output mode - page 0x23 */
	dm_i2c_reg_write(dev, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
	/* Turn ON the Output driver correspond to required output*/
	for (i = 0; i < num_con ; i++)
	dm_i2c_reg_write(dev, con_arr[i][1], 0);

	/* configure global core control register, Turn on Global core power */
	dm_i2c_reg_write(dev, GLOBAL_CORE_CNTRL, 0);
	#else
	ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
	if (ret < 0) {
	printf("VSC:0x%x could not read REV_ID from device.\n",
	vsc_addr);
	return ret;
	}

	if (rev_id != 0xab) {
	printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
	vsc_addr);
	return -ENODEV;
	}

	ret = vsc_if_enable(vsc_addr);
	if (ret) {
	printf("VSC:0x%x could not configured for 2-wire I/F.\n",
	vsc_addr);
	return ret;
	}

	/* config connections - page 0x00 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);

	/* Making crosspoint connections, by connecting required
	* input to output */
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);

	/Configure Global Input ISE and gain /
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0x12);
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0x12);

	/* input state - page 0x13 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
	/* Turning ON the required input of the switch */
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][0], 0);

	/* Setting Global Input LOS threshold value */
	i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);

	/* config output mode - page 0x23 */
	i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
	/* Turn ON the Output driver correspond to required output*/
	for (i = 0; i < num_con ; i++)
	i2c_reg_write(vsc_addr, con_arr[i][1], 0);

	/* configure global core control register, Turn on Global core power */
	i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
	#endif
	vsc_wp_config(vsc_addr);

	return 0;
	}

	void vsc_wp_config(unsigned int vsc_addr)
	{
	debug("VSC:Configuring VSC at address:0x%x for WP\n", vsc_addr);

	/* For new crosspoint configuration to occur, WP bit of
	* CORE_CONFIG_REG should be set 1 and then reset to 0 */
	#ifdef CONFIG_DM_I2C
	int ret, bus_num = 0;
	struct udevice *dev;

	ret = i2c_get_chip_for_busnum(bus_num, vsc_addr,
	1, &dev);
	if (ret) {
	printf("%s: Cannot find udev for a bus %d\n", __func__,
	bus_num);
	return;
	}

	dm_i2c_reg_write(dev, CORE_CONFIG_REG, 0x01);
	dm_i2c_reg_write(dev, CORE_CONFIG_REG, 0x0);
	#else
	i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x01);
	i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x0);
	#endif
	}