imx: mx6sabre common: Factorize the Pfuze init function

Since the Pfuze initializations are similar on various mx6 SABRE
boards. Factorize the initialization to a common function in file
board/freescale/common/pfuze.c. So that all SABRE boards BSP can
share the function.

Signed-off-by: Ye.Li <B37916@freescale.com>

board/freescale/common/Makefile

@@ -53,6 +53,7 @@ obj-$(CONFIG_P5040DS)		+= ics307_clk.o
 obj-$(CONFIG_VSC_CROSSBAR)    += vsc3316_3308.o
 obj-$(CONFIG_IDT8T49N222A)	+= idt8t49n222a_serdes_clk.o
 obj-$(CONFIG_ZM7300)		+= zm7300.o
+obj-$(CONFIG_POWER_PFUZE100)	+= pfuze.o
 
 # deal with common files for P-series corenet based devices
 obj-$(CONFIG_P2041RDB)	+= p_corenet/

board/freescale/common/pfuze.c

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <power/pmic.h>
+#include <power/pfuze100_pmic.h>
+
+struct pmic *pfuze_common_init(unsigned char i2cbus)
+{
+	struct pmic *p;
+	int ret;
+	unsigned int reg;
+
+	ret = power_pfuze100_init(i2cbus);
+	if (ret)
+		return NULL;
+
+	p = pmic_get("PFUZE100");
+	ret = pmic_probe(p);
+	if (ret)
+		return NULL;
+
+	pmic_reg_read(p, PFUZE100_DEVICEID, &reg);
+	printf("PMIC:  PFUZE100 ID=0x%02x\n", reg);
+
+	/* Set SW1AB stanby volage to 0.975V */
+	pmic_reg_read(p, PFUZE100_SW1ABSTBY, &reg);
+	reg &= ~SW1x_STBY_MASK;
+	reg |= SW1x_0_975V;
+	pmic_reg_write(p, PFUZE100_SW1ABSTBY, reg);
+
+	/* Set SW1AB/VDDARM step ramp up time from 16us to 4us/25mV */
+	pmic_reg_read(p, PUZE_100_SW1ABCONF, &reg);
+	reg &= ~SW1xCONF_DVSSPEED_MASK;
+	reg |= SW1xCONF_DVSSPEED_4US;
+	pmic_reg_write(p, PUZE_100_SW1ABCONF, reg);
+
+	/* Set SW1C standby voltage to 0.975V */
+	pmic_reg_read(p, PFUZE100_SW1CSTBY, &reg);
+	reg &= ~SW1x_STBY_MASK;
+	reg |= SW1x_0_975V;
+	pmic_reg_write(p, PFUZE100_SW1CSTBY, reg);
+
+	/* Set SW1C/VDDSOC step ramp up time from 16us to 4us/25mV */
+	pmic_reg_read(p, PFUZE100_SW1CCONF, &reg);
+	reg &= ~SW1xCONF_DVSSPEED_MASK;
+	reg |= SW1xCONF_DVSSPEED_4US;
+	pmic_reg_write(p, PFUZE100_SW1CCONF, reg);
+
+	return p;
+}

board/freescale/common/pfuze.h

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __PFUZE_BOARD_HELPER__
+#define __PFUZE_BOARD_HELPER__
+
+struct pmic *pfuze_common_init(unsigned char i2cbus);
+
+#endif