[U-Boot] [PATCH 11/12] imx:mx6qsabreauto add ldo mode init

[Peng Fan]

If runs at 1.2GHz, enable ldo, and adjust voltage.
Otherwise, do nothing

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Signed-off-by: Robin Gong <b38343 at freescale.com>
---
 board/freescale/mx6qsabreauto/mx6qsabreauto.c | 31 +++++++++++++++++++++++++++
 include/configs/mx6qsabreauto.h               |  2 ++
 2 files changed, 33 insertions(+)

diff --git a/board/freescale/mx6qsabreauto/mx6qsabreauto.c b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
index b29ff2b..84ac9b7 100644
--- a/board/freescale/mx6qsabreauto/mx6qsabreauto.c
+++ b/board/freescale/mx6qsabreauto/mx6qsabreauto.c
@@ -29,6 +29,7 @@
 #include <asm/arch/crm_regs.h>
 #include <pca953x.h>
 #include <power/pmic.h>
+#include <power/pfuze100_pmic.h>
 #include "../common/pfuze.h"
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -512,6 +513,7 @@ int board_spi_cs_gpio(unsigned bus, unsigned cs)
 }
 #endif
 
+static struct pmic *pfuze;
 int power_init_board(void)
 {
 	struct pmic *p;
@@ -520,6 +522,7 @@ int power_init_board(void)
 	p = pfuze_common_init(I2C_PMIC);
 	if (!p)
 		return -ENODEV;
+	pfuze = p;
 
 	ret = pfuze_mode_init(p, APS_PFM);
 	if (ret < 0)
@@ -528,6 +531,34 @@ int power_init_board(void)
 	return 0;
 }
 
+#ifdef CONFIG_LDO_BYPASS_CHECK
+void ldo_mode_set(int ldo_bypass)
+{
+	unsigned int value;
+	struct pmic *p = pfuze;
+
+	if (!p)
+		return;
+
+	/* increase VDDARM/VDDSOC to support 1.2G chip */
+	if (check_1_2G()) {
+		ldo_bypass = 0;	/* ldo_enable on 1.2G chip */
+		printf("1.2G chip, increase VDDARM_IN/VDDSOC_IN\n");
+		/* increase VDDARM to 1.425V */
+		pmic_reg_read(p, PFUZE100_SW1ABVOL, &value);
+		value &= ~0x3f;
+		value |= PFUZE100_SW1ABC_SETP(14250);
+		pmic_reg_write(p, PFUZE100_SW1ABVOL, value);
+
+		/* increase VDDSOC to 1.425V */
+		pmic_reg_read(p, PFUZE100_SW1CVOL, &value);
+		value &= ~0x3f;
+		value |= PFUZE100_SW1ABC_SETP(14250);
+		pmic_reg_write(p, PFUZE100_SW1CVOL, value);
+	}
+}
+#endif
+
 #ifdef CONFIG_CMD_BMODE
 static const struct boot_mode board_boot_modes[] = {
 	/* 4 bit bus width */
diff --git a/include/configs/mx6qsabreauto.h b/include/configs/mx6qsabreauto.h
index 51042ca..5b4fb65 100644
--- a/include/configs/mx6qsabreauto.h
+++ b/include/configs/mx6qsabreauto.h
@@ -80,4 +80,6 @@
 #define CONFIG_POWER_PFUZE100
 #define CONFIG_POWER_PFUZE100_I2C_ADDR	0x08
 
+#define CONFIG_LDO_BYPASS_CHECK
+
 #endif                         /* __MX6QSABREAUTO_CONFIG_H */
-- 
1.8.4