X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=board%2Ffreescale%2Fb4860qds%2Fb4860qds.c;h=b2d53781438d35a296990068e90085bf27ef8ce2;hb=557a3319089499aa0e55d65a6b43b7137f362003;hp=f6b012dbbc6370c718dbac9cf2d8dae2fef1d98a;hpb=935b402eaec0f78ffdafd614aa8176a777d8b6d9;p=u-boot

diff --git a/board/freescale/b4860qds/b4860qds.c b/board/freescale/b4860qds/b4860qds.c
index f6b012dbbc..b2d5378143 100644
--- a/board/freescale/b4860qds/b4860qds.c
+++ b/board/freescale/b4860qds/b4860qds.c
@@ -11,6 +11,7 @@
 #include <linux/compiler.h>
 #include <asm/mmu.h>
 #include <asm/processor.h>
+#include <asm/errno.h>
 #include <asm/cache.h>
 #include <asm/immap_85xx.h>
 #include <asm/fsl_law.h>
@@ -22,13 +23,13 @@
 #include "../common/qixis.h"
 #include "../common/vsc3316_3308.h"
 #include "../common/idt8t49n222a_serdes_clk.h"
+#include "../common/zm7300.h"
 #include "b4860qds.h"
 #include "b4860qds_qixis.h"
 #include "b4860qds_crossbar_con.h"
 
 #define CLK_MUX_SEL_MASK	0x4
 #define ETH_PHY_CLK_OUT		0x4
-#define PLL_NUM			2
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -94,6 +95,238 @@ int select_i2c_ch_pca(u8 ch)
 	return 0;
 }
 
+/*
+ * read_voltage from sensor on I2C bus
+ * We use average of 4 readings, waiting for 532us befor another reading
+ */
+#define WAIT_FOR_ADC	532	/* wait for 532 microseconds for ADC */
+#define NUM_READINGS	4	/* prefer to be power of 2 for efficiency */
+
+static inline int read_voltage(void)
+{
+	int i, ret, voltage_read = 0;
+	u16 vol_mon;
+
+	for (i = 0; i < NUM_READINGS; i++) {
+		ret = i2c_read(I2C_VOL_MONITOR_ADDR,
+			I2C_VOL_MONITOR_BUS_V_OFFSET, 1, (void *)&vol_mon, 2);
+		if (ret) {
+			printf("VID: failed to read core voltage\n");
+			return ret;
+		}
+		if (vol_mon & I2C_VOL_MONITOR_BUS_V_OVF) {
+			printf("VID: Core voltage sensor error\n");
+			return -1;
+		}
+		debug("VID: bus voltage reads 0x%04x\n", vol_mon);
+		/* LSB = 4mv */
+		voltage_read += (vol_mon >> I2C_VOL_MONITOR_BUS_V_SHIFT) * 4;
+		udelay(WAIT_FOR_ADC);
+	}
+	/* calculate the average */
+	voltage_read /= NUM_READINGS;
+
+	return voltage_read;
+}
+
+static int adjust_vdd(ulong vdd_override)
+{
+	int re_enable = disable_interrupts();
+	ccsr_gur_t __iomem *gur =
+		(void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	u32 fusesr;
+	u8 vid;
+	int vdd_target, vdd_last;
+	int existing_voltage, temp_voltage, voltage; /* all in 1/10 mV */
+	int ret;
+	unsigned int orig_i2c_speed;
+	unsigned long vdd_string_override;
+	char *vdd_string;
+	static const uint16_t vdd[32] = {
+		0,	/* unused */
+		9875,	/* 0.9875V */
+		9750,
+		9625,
+		9500,
+		9375,
+		9250,
+		9125,
+		9000,
+		8875,
+		8750,
+		8625,
+		8500,
+		8375,
+		8250,
+		8125,
+		10000,	/* 1.0000V */
+		10125,
+		10250,
+		10375,
+		10500,
+		10625,
+		10750,
+		10875,
+		11000,
+		0,	/* reserved */
+	};
+	struct vdd_drive {
+		u8 vid;
+		unsigned voltage;
+	};
+
+	ret = select_i2c_ch_pca(I2C_MUX_CH_VOL_MONITOR);
+	if (ret) {
+		printf("VID: I2c failed to switch channel\n");
+		ret = -1;
+		goto exit;
+	}
+
+	/* get the voltage ID from fuse status register */
+	fusesr = in_be32(&gur->dcfg_fusesr);
+	vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_VID_SHIFT) &
+		FSL_CORENET_DCFG_FUSESR_VID_MASK;
+	if (vid == FSL_CORENET_DCFG_FUSESR_VID_MASK) {
+		vid = (fusesr >> FSL_CORENET_DCFG_FUSESR_ALTVID_SHIFT) &
+			FSL_CORENET_DCFG_FUSESR_ALTVID_MASK;
+	}
+	vdd_target = vdd[vid];
+	debug("VID:Reading from from fuse,vid=%x vdd is %dmV\n",
+	      vid, vdd_target/10);
+
+	/* check override variable for overriding VDD */
+	vdd_string = getenv("b4qds_vdd_mv");
+	if (vdd_override == 0 && vdd_string &&
+	    !strict_strtoul(vdd_string, 10, &vdd_string_override))
+		vdd_override = vdd_string_override;
+	if (vdd_override >= 819 && vdd_override <= 1212) {
+		vdd_target = vdd_override * 10; /* convert to 1/10 mV */
+		debug("VDD override is %lu\n", vdd_override);
+	} else if (vdd_override != 0) {
+		printf("Invalid value.\n");
+	}
+
+	if (vdd_target == 0) {
+		printf("VID: VID not used\n");
+		ret = 0;
+		goto exit;
+	}
+
+	/*
+	 * Read voltage monitor to check real voltage.
+	 * Voltage monitor LSB is 4mv.
+	 */
+	vdd_last = read_voltage();
+	if (vdd_last < 0) {
+		printf("VID: abort VID adjustment\n");
+		ret = -1;
+		goto exit;
+	}
+
+	debug("VID: Core voltage is at %d mV\n", vdd_last);
+	ret = select_i2c_ch_pca(I2C_MUX_CH_DPM);
+	if (ret) {
+		printf("VID: I2c failed to switch channel to DPM\n");
+		ret = -1;
+		goto exit;
+	}
+
+	/* Round up to the value of step of Voltage regulator */
+	voltage = roundup(vdd_target, ZM_STEP);
+	debug("VID: rounded up voltage = %d\n", voltage);
+
+	/* lower the speed to 100kHz to access ZM7300 device */
+	debug("VID: Setting bus speed to 100KHz if not already set\n");
+	orig_i2c_speed = i2c_get_bus_speed();
+	if (orig_i2c_speed != 100000)
+		i2c_set_bus_speed(100000);
+
+	/* Read the existing level on board, if equal to requsted one,
+	   no need to re-set */
+	existing_voltage = zm_read_voltage();
+
+	/* allowing the voltage difference of one step 0.0125V acceptable */
+	if ((existing_voltage >= voltage) &&
+	    (existing_voltage < (voltage + ZM_STEP))) {
+		debug("VID: voltage already set as requested,returning\n");
+		ret = existing_voltage;
+		goto out;
+	}
+	debug("VID: Changing voltage for board from %dmV to %dmV\n",
+	      existing_voltage/10, voltage/10);
+
+	if (zm_disable_wp() < 0) {
+		ret = -1;
+		goto out;
+	}
+	/* Change Voltage: the change is done through all the steps in the
+	   way, to avoid reset to the board due to power good signal fail
+	   in big voltage change gap jump.
+	*/
+	if (existing_voltage > voltage) {
+		temp_voltage = existing_voltage - ZM_STEP;
+			while (temp_voltage >= voltage) {
+				ret = zm_write_voltage(temp_voltage);
+				if (ret == temp_voltage) {
+					temp_voltage -= ZM_STEP;
+				} else {
+					/* ZM7300 device failed to set
+					 * the voltage */
+					printf
+					("VID:Stepping down vol failed:%dmV\n",
+					 temp_voltage/10);
+				     ret = -1;
+				     goto out;
+				}
+			}
+	} else {
+		temp_voltage = existing_voltage + ZM_STEP;
+			while (temp_voltage < (voltage + ZM_STEP)) {
+				ret = zm_write_voltage(temp_voltage);
+				if (ret == temp_voltage) {
+					temp_voltage += ZM_STEP;
+				} else {
+					/* ZM7300 device failed to set
+					 * the voltage */
+					printf
+					("VID:Stepping up vol failed:%dmV\n",
+					 temp_voltage/10);
+				     ret = -1;
+				     goto out;
+				}
+			}
+	}
+
+	if (zm_enable_wp() < 0)
+		ret = -1;
+
+	/* restore the speed to 400kHz */
+out:	debug("VID: Restore the I2C bus speed to %dKHz\n",
+				orig_i2c_speed/1000);
+	i2c_set_bus_speed(orig_i2c_speed);
+	if (ret < 0)
+		goto exit;
+
+	ret = select_i2c_ch_pca(I2C_MUX_CH_VOL_MONITOR);
+	if (ret) {
+		printf("VID: I2c failed to switch channel\n");
+		ret = -1;
+		goto exit;
+	}
+	vdd_last = read_voltage();
+	select_i2c_ch_pca(I2C_CH_DEFAULT);
+
+	if (vdd_last > 0)
+		printf("VID: Core voltage %d mV\n", vdd_last);
+	else
+		ret = -1;
+
+exit:
+	if (re_enable)
+		enable_interrupts();
+	return ret;
+}
+
 int configure_vsc3316_3308(void)
 {
 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
@@ -120,6 +353,7 @@ int configure_vsc3316_3308(void)
 	debug("Using SERDES2 Protocol: 0x%x:\n", serdes2_prtcl);
 
 	switch (serdes1_prtcl) {
+	case 0x29:
 	case 0x2a:
 	case 0x2C:
 	case 0x2D:
@@ -151,7 +385,55 @@ int configure_vsc3316_3308(void)
 		}
 		break;
 
+	case 0x02:
+	case 0x04:
+	case 0x05:
+	case 0x06:
+	case 0x08:
+	case 0x09:
+	case 0x0A:
+	case 0x0B:
+	case 0x0C:
+	case 0x30:
+	case 0x32:
+	case 0x33:
+	case 0x34:
+	case 0x39:
+	case 0x3A:
+	case 0x3C:
+	case 0x3D:
+	case 0x5C:
+	case 0x5D:
+			/*
+			 * Configuration:
+			 * SERDES: 1
+			 * Lanes: A,B: AURORA
+			 * Lanes: C,d: SGMII
+			 * Lanes: E,F,G,H: CPRI
+			 */
+		debug("Configuring crossbar for Aurora, SGMII 3 and 4,"
+				" and CPRI. srds_prctl:%x\n", serdes1_prtcl);
+		num_vsc16_con = NUM_CON_VSC3316;
+		/* Configure VSC3316 crossbar switch */
+		ret = select_i2c_ch_pca(I2C_CH_VSC3316);
+		if (!ret) {
+			ret = vsc3316_config(VSC3316_TX_ADDRESS,
+					vsc16_tx_sfp_sgmii_aurora,
+					num_vsc16_con);
+			if (ret)
+				return ret;
+			ret = vsc3316_config(VSC3316_RX_ADDRESS,
+					vsc16_rx_sfp_sgmii_aurora,
+					num_vsc16_con);
+			if (ret)
+				return ret;
+		} else {
+			return ret;
+		}
+		break;
+
 #ifdef CONFIG_PPC_B4420
+	case 0x17:
 	case 0x18:
 			/*
 			 * Configuration:
@@ -239,14 +521,191 @@ int configure_vsc3316_3308(void)
 	return 0;
 }
 
+static int calibrate_pll(serdes_corenet_t *srds_regs, int pll_num)
+{
+	u32 rst_err;
+
+	/* Steps For SerDes PLLs reset and reconfiguration
+	 * or PLL power-up procedure
+	 */
+	debug("CALIBRATE PLL:%d\n", pll_num);
+	clrbits_be32(&srds_regs->bank[pll_num].rstctl,
+			SRDS_RSTCTL_SDRST_B);
+	udelay(10);
+	clrbits_be32(&srds_regs->bank[pll_num].rstctl,
+		(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B));
+	udelay(10);
+	setbits_be32(&srds_regs->bank[pll_num].rstctl,
+			SRDS_RSTCTL_RST);
+	setbits_be32(&srds_regs->bank[pll_num].rstctl,
+		(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B
+		| SRDS_RSTCTL_SDRST_B));
+
+	udelay(20);
+
+	/* Check whether PLL has been locked or not */
+	rst_err = in_be32(&srds_regs->bank[pll_num].rstctl) &
+				SRDS_RSTCTL_RSTERR;
+	rst_err >>= SRDS_RSTCTL_RSTERR_SHIFT;
+	debug("RST_ERR value for PLL %d is: 0x%x:\n", pll_num, rst_err);
+	if (rst_err)
+		return rst_err;
+
+	return rst_err;
+}
+
+static int check_pll_locks(serdes_corenet_t *srds_regs, int pll_num)
+{
+	int ret = 0;
+	u32 fcap, dcbias, bcap, pllcr1, pllcr0;
+
+	if (calibrate_pll(srds_regs, pll_num)) {
+		/* STEP 1 */
+		/* Read fcap, dcbias and bcap value */
+		clrbits_be32(&srds_regs->bank[pll_num].pllcr0,
+				SRDS_PLLCR0_DCBIAS_OUT_EN);
+		fcap = in_be32(&srds_regs->bank[pll_num].pllsr2) &
+					SRDS_PLLSR2_FCAP;
+		fcap >>= SRDS_PLLSR2_FCAP_SHIFT;
+		bcap = in_be32(&srds_regs->bank[pll_num].pllsr2) &
+					SRDS_PLLSR2_BCAP_EN;
+		bcap >>= SRDS_PLLSR2_BCAP_EN_SHIFT;
+		setbits_be32(&srds_regs->bank[pll_num].pllcr0,
+				SRDS_PLLCR0_DCBIAS_OUT_EN);
+		dcbias = in_be32(&srds_regs->bank[pll_num].pllsr2) &
+					SRDS_PLLSR2_DCBIAS;
+		dcbias >>= SRDS_PLLSR2_DCBIAS_SHIFT;
+		debug("values of bcap:%x, fcap:%x and dcbias:%x\n",
+					bcap, fcap, dcbias);
+		if (fcap == 0 && bcap == 1) {
+			/* Step 3 */
+			clrbits_be32(&srds_regs->bank[pll_num].rstctl,
+				(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B
+				 | SRDS_RSTCTL_SDRST_B));
+			clrbits_be32(&srds_regs->bank[pll_num].pllcr1,
+					SRDS_PLLCR1_BCAP_EN);
+			setbits_be32(&srds_regs->bank[pll_num].pllcr1,
+					SRDS_PLLCR1_BCAP_OVD);
+			if (calibrate_pll(srds_regs, pll_num)) {
+				/*save the fcap, dcbias and bcap values*/
+				clrbits_be32(&srds_regs->bank[pll_num].pllcr0,
+						SRDS_PLLCR0_DCBIAS_OUT_EN);
+				fcap = in_be32(&srds_regs->bank[pll_num].pllsr2)
+					& SRDS_PLLSR2_FCAP;
+				fcap >>= SRDS_PLLSR2_FCAP_SHIFT;
+				bcap = in_be32(&srds_regs->bank[pll_num].pllsr2)
+					& SRDS_PLLSR2_BCAP_EN;
+				bcap >>= SRDS_PLLSR2_BCAP_EN_SHIFT;
+				setbits_be32(&srds_regs->bank[pll_num].pllcr0,
+						SRDS_PLLCR0_DCBIAS_OUT_EN);
+				dcbias = in_be32
+					(&srds_regs->bank[pll_num].pllsr2) &
+							SRDS_PLLSR2_DCBIAS;
+				dcbias >>= SRDS_PLLSR2_DCBIAS_SHIFT;
+
+				/* Step 4*/
+				clrbits_be32(&srds_regs->bank[pll_num].rstctl,
+				(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B
+				 | SRDS_RSTCTL_SDRST_B));
+				setbits_be32(&srds_regs->bank[pll_num].pllcr1,
+						SRDS_PLLCR1_BYP_CAL);
+				clrbits_be32(&srds_regs->bank[pll_num].pllcr1,
+						SRDS_PLLCR1_BCAP_EN);
+				setbits_be32(&srds_regs->bank[pll_num].pllcr1,
+						SRDS_PLLCR1_BCAP_OVD);
+				/* change the fcap and dcbias to the saved
+				 * values from Step 3 */
+				clrbits_be32(&srds_regs->bank[pll_num].pllcr1,
+							SRDS_PLLCR1_PLL_FCAP);
+				pllcr1 = (in_be32
+					(&srds_regs->bank[pll_num].pllcr1)|
+					(fcap << SRDS_PLLCR1_PLL_FCAP_SHIFT));
+				out_be32(&srds_regs->bank[pll_num].pllcr1,
+							pllcr1);
+				clrbits_be32(&srds_regs->bank[pll_num].pllcr0,
+						SRDS_PLLCR0_DCBIAS_OVRD);
+				pllcr0 = (in_be32
+				(&srds_regs->bank[pll_num].pllcr0)|
+				(dcbias << SRDS_PLLCR0_DCBIAS_OVRD_SHIFT));
+				out_be32(&srds_regs->bank[pll_num].pllcr0,
+							pllcr0);
+				ret = calibrate_pll(srds_regs, pll_num);
+				if (ret)
+					return ret;
+			} else {
+				goto out;
+			}
+		} else { /* Step 5 */
+			clrbits_be32(&srds_regs->bank[pll_num].rstctl,
+				(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B
+				 | SRDS_RSTCTL_SDRST_B));
+			udelay(10);
+			/* Change the fcap, dcbias, and bcap to the
+			 * values from Step 1 */
+			setbits_be32(&srds_regs->bank[pll_num].pllcr1,
+					SRDS_PLLCR1_BYP_CAL);
+			clrbits_be32(&srds_regs->bank[pll_num].pllcr1,
+						SRDS_PLLCR1_PLL_FCAP);
+			pllcr1 = (in_be32(&srds_regs->bank[pll_num].pllcr1)|
+				(fcap << SRDS_PLLCR1_PLL_FCAP_SHIFT));
+			out_be32(&srds_regs->bank[pll_num].pllcr1,
+						pllcr1);
+			clrbits_be32(&srds_regs->bank[pll_num].pllcr0,
+						SRDS_PLLCR0_DCBIAS_OVRD);
+			pllcr0 = (in_be32(&srds_regs->bank[pll_num].pllcr0)|
+				(dcbias << SRDS_PLLCR0_DCBIAS_OVRD_SHIFT));
+			out_be32(&srds_regs->bank[pll_num].pllcr0,
+						pllcr0);
+			clrbits_be32(&srds_regs->bank[pll_num].pllcr1,
+					SRDS_PLLCR1_BCAP_EN);
+			setbits_be32(&srds_regs->bank[pll_num].pllcr1,
+					SRDS_PLLCR1_BCAP_OVD);
+			ret = calibrate_pll(srds_regs, pll_num);
+			if (ret)
+				return ret;
+		}
+	}
+out:
+	return 0;
+}
+
+static int check_serdes_pll_locks(void)
+{
+	serdes_corenet_t *srds1_regs =
+		(void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
+	serdes_corenet_t *srds2_regs =
+		(void *)CONFIG_SYS_FSL_CORENET_SERDES2_ADDR;
+	int i, ret1, ret2;
+
+	debug("\nSerDes1 Lock check\n");
+	for (i = 0; i < CONFIG_SYS_FSL_SRDS_NUM_PLLS; i++) {
+		ret1 = check_pll_locks(srds1_regs, i);
+		if (ret1) {
+			printf("SerDes1, PLL:%d didnt lock\n", i);
+			return ret1;
+		}
+	}
+	debug("\nSerDes2 Lock check\n");
+	for (i = 0; i < CONFIG_SYS_FSL_SRDS_NUM_PLLS; i++) {
+		ret2 = check_pll_locks(srds2_regs, i);
+		if (ret2) {
+			printf("SerDes2, PLL:%d didnt lock\n", i);
+			return ret2;
+		}
+	}
+
+	return 0;
+}
+
 int config_serdes1_refclks(void)
 {
 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 	serdes_corenet_t *srds_regs =
 		(void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR;
 	u32 serdes1_prtcl, lane;
-	unsigned int flag_sgmii_prtcl = 0;
-	int ret, i;
+	unsigned int flag_sgmii_aurora_prtcl = 0;
+	int i;
+	int ret = 0;
 
 	serdes1_prtcl = in_be32(&gur->rcwsr[4]) &
 			FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
@@ -257,10 +716,12 @@ int config_serdes1_refclks(void)
 	serdes1_prtcl >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
 	debug("Using SERDES1 Protocol: 0x%x:\n", serdes1_prtcl);
 
-	/* Clear SRDS_RSTCTL_RST bit for both PLLs before changing refclks
+	/* To prevent generation of reset request from SerDes
+	 * while changing the refclks, By setting SRDS_RST_MSK bit,
+	 * SerDes reset event cannot cause a reset request
 	 */
-	for (i = 0; i < PLL_NUM; i++)
-		clrbits_be32(&srds_regs->bank[i].rstctl, SRDS_RSTCTL_RST);
+	setbits_be32(&gur->rstrqmr1, FSL_CORENET_RSTRQMR1_SRDS_RST_MSK);
+
 	/* Reconfigure IDT idt8t49n222a device for CPRI to work
 	 * For this SerDes1's Refclk1 and refclk2 need to be set
 	 * to 122.88MHz
@@ -270,6 +731,25 @@ int config_serdes1_refclks(void)
 	case 0x2C:
 	case 0x2D:
 	case 0x2E:
+	case 0x02:
+	case 0x04:
+	case 0x05:
+	case 0x06:
+	case 0x08:
+	case 0x09:
+	case 0x0A:
+	case 0x0B:
+	case 0x0C:
+	case 0x30:
+	case 0x32:
+	case 0x33:
+	case 0x34:
+	case 0x39:
+	case 0x3A:
+	case 0x3C:
+	case 0x3D:
+	case 0x5C:
+	case 0x5D:
 		debug("Configuring idt8t49n222a for CPRI SerDes clks:"
 			" for srds_prctl:%x\n", serdes1_prtcl);
 		ret = select_i2c_ch_pca(I2C_CH_IDT);
@@ -279,16 +759,16 @@ int config_serdes1_refclks(void)
 					SERDES_REFCLK_122_88, 0);
 			if (ret) {
 				printf("IDT8T49N222A configuration failed.\n");
-				return ret;
+				goto out;
 			} else
-				printf("IDT8T49N222A configured.\n");
+				debug("IDT8T49N222A configured.\n");
 		} else {
-			return ret;
+			goto out;
 		}
 		select_i2c_ch_pca(I2C_CH_DEFAULT);
 
 		/* Change SerDes1's Refclk1 to 125MHz for on board
-		 * SGMIIs to work
+		 * SGMIIs or Aurora to work
 		 */
 		for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
 			enum srds_prtcl lane_prtcl = serdes_get_prtcl
@@ -300,20 +780,21 @@ int config_serdes1_refclks(void)
 			case SGMII_FM1_DTSEC4:
 			case SGMII_FM1_DTSEC5:
 			case SGMII_FM1_DTSEC6:
-				flag_sgmii_prtcl++;
+			case AURORA:
+				flag_sgmii_aurora_prtcl++;
 				break;
 			default:
 				break;
 			}
 		}
 
-		if (flag_sgmii_prtcl)
+		if (flag_sgmii_aurora_prtcl)
 			QIXIS_WRITE(brdcfg[4], QIXIS_SRDS1CLK_125);
 
 		/* Steps For SerDes PLLs reset and reconfiguration after
 		 * changing SerDes's refclks
 		 */
-		for (i = 0; i < PLL_NUM; i++) {
+		for (i = 0; i < CONFIG_SYS_FSL_SRDS_NUM_PLLS; i++) {
 			debug("For PLL%d reset and reconfiguration after"
 			       " changing refclks\n", i+1);
 			clrbits_be32(&srds_regs->bank[i].rstctl,
@@ -333,16 +814,101 @@ int config_serdes1_refclks(void)
 		printf("WARNING:IDT8T49N222A configuration not"
 			" supported for:%x SerDes1 Protocol.\n",
 			serdes1_prtcl);
-		return -1;
 	}
 
-	return 0;
+out:
+	/* Clearing SRDS_RST_MSK bit as now
+	 * SerDes reset event can cause a reset request
+	 */
+	clrbits_be32(&gur->rstrqmr1, FSL_CORENET_RSTRQMR1_SRDS_RST_MSK);
+	return ret;
+}
+
+int config_serdes2_refclks(void)
+{
+	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	serdes_corenet_t *srds2_regs =
+		(void *)CONFIG_SYS_FSL_CORENET_SERDES2_ADDR;
+	u32 serdes2_prtcl;
+	int ret = 0;
+	int i;
+
+	serdes2_prtcl = in_be32(&gur->rcwsr[4]) &
+			FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
+	if (!serdes2_prtcl) {
+		debug("SERDES2 is not enabled\n");
+		return -ENODEV;
+	}
+	serdes2_prtcl >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
+	debug("Using SERDES2 Protocol: 0x%x:\n", serdes2_prtcl);
+
+	/* To prevent generation of reset request from SerDes
+	 * while changing the refclks, By setting SRDS_RST_MSK bit,
+	 * SerDes reset event cannot cause a reset request
+	 */
+	setbits_be32(&gur->rstrqmr1, FSL_CORENET_RSTRQMR1_SRDS_RST_MSK);
+
+	/* Reconfigure IDT idt8t49n222a device for PCIe SATA to work
+	 * For this SerDes2's Refclk1 need to be set to 100MHz
+	 */
+	switch (serdes2_prtcl) {
+	case 0x9E:
+	case 0x9A:
+	case 0xb2:
+		debug("Configuring IDT for PCIe SATA for srds_prctl:%x\n",
+			serdes2_prtcl);
+		ret = select_i2c_ch_pca(I2C_CH_IDT);
+		if (!ret) {
+			ret = set_serdes_refclk(IDT_SERDES2_ADDRESS, 2,
+					SERDES_REFCLK_100,
+					SERDES_REFCLK_156_25, 0);
+			if (ret) {
+				printf("IDT8T49N222A configuration failed.\n");
+				goto out;
+			} else
+				debug("IDT8T49N222A configured.\n");
+		} else {
+			goto out;
+		}
+		select_i2c_ch_pca(I2C_CH_DEFAULT);
+
+		/* Steps For SerDes PLLs reset and reconfiguration after
+		 * changing SerDes's refclks
+		 */
+		for (i = 0; i < CONFIG_SYS_FSL_SRDS_NUM_PLLS; i++) {
+			clrbits_be32(&srds2_regs->bank[i].rstctl,
+					SRDS_RSTCTL_SDRST_B);
+			udelay(10);
+			clrbits_be32(&srds2_regs->bank[i].rstctl,
+				(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B));
+			udelay(10);
+			setbits_be32(&srds2_regs->bank[i].rstctl,
+					SRDS_RSTCTL_RST);
+			setbits_be32(&srds2_regs->bank[i].rstctl,
+				(SRDS_RSTCTL_SDEN | SRDS_RSTCTL_PLLRST_B
+				| SRDS_RSTCTL_SDRST_B));
+
+			udelay(10);
+		}
+		break;
+	default:
+		printf("IDT configuration not supported for:%x S2 Protocol.\n",
+			serdes2_prtcl);
+	}
+
+out:
+	/* Clearing SRDS_RST_MSK bit as now
+	 * SerDes reset event can cause a reset request
+	 */
+	clrbits_be32(&gur->rstrqmr1, FSL_CORENET_RSTRQMR1_SRDS_RST_MSK);
+	return ret;
 }
 
 int board_early_init_r(void)
 {
 	const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
 	const u8 flash_esel = find_tlb_idx((void *)flashbase, 1);
+	int ret;
 
 	/*
 	 * Remap Boot flash + PROMJET region to caching-inhibited
@@ -364,6 +930,13 @@ int board_early_init_r(void)
 #ifdef CONFIG_SYS_DPAA_QBMAN
 	setup_portals();
 #endif
+	/*
+	 * Adjust core voltage according to voltage ID
+	 * This function changes I2C mux to channel 2.
+	 */
+	if (adjust_vdd(0) < 0)
+		printf("Warning: Adjusting core voltage failed\n");
+
 	/* SerDes1 refclks need to be set again, as default clks
 	 * are not suitable for CPRI and onboard SGMIIs to work
 	 * simultaneously.
@@ -375,6 +948,35 @@ int board_early_init_r(void)
 	else
 		printf("SerDes1 Refclks have been set.\n");
 
+	/* SerDes2 refclks need to be set again, as default clks
+	 * are not suitable for PCIe SATA to work
+	 * This function will set SerDes2's Refclk1 and refclk2
+	 * for SerDes2 protocols having PCIe in them
+	 * for PCIe SATA to work
+	 */
+	ret = config_serdes2_refclks();
+	if (!ret)
+		printf("SerDes2 Refclks have been set.\n");
+	else if (ret == -ENODEV)
+		printf("SerDes disable, Refclks couldn't change.\n");
+	else
+		printf("SerDes2 Refclk reconfiguring failed.\n");
+
+#if defined(CONFIG_SYS_FSL_ERRATUM_A006384) || \
+			defined(CONFIG_SYS_FSL_ERRATUM_A006475)
+	/* Rechecking the SerDes locks after all SerDes configurations
+	 * are done, As SerDes PLLs may not lock reliably at 5 G VCO
+	 * and at cold temperatures.
+	 * Following sequence ensure the proper locking of SerDes PLLs.
+	 */
+	if (SVR_MAJ(get_svr()) == 1) {
+		if (check_serdes_pll_locks())
+			printf("SerDes plls still not locked properly.\n");
+		else
+			printf("SerDes plls have been locked well.\n");
+	}
+#endif
+
 	/* Configure VSC3316 and VSC3308 crossbar switches */
 	if (configure_vsc3316_3308())
 		printf("VSC:failed to configure VSC3316/3308.\n");