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-rw-r--r--board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c61
1 files changed, 50 insertions, 11 deletions
diff --git a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
index 4179e14..d7d28a3 100644
--- a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
+++ b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
@@ -829,9 +829,9 @@ int board_early_init_f(void)
#ifdef CONFIG_POWER
#define I2C_PMIC 0
+static struct pmic *pfuze;
int power_init_board(void)
{
- struct pmic *p;
int ret;
unsigned int reg, rev_id;
@@ -839,27 +839,66 @@ int power_init_board(void)
if (ret)
return ret;
- p = pmic_get("PFUZE300");
- ret = pmic_probe(p);
+ pfuze = pmic_get("PFUZE300");
+ ret = pmic_probe(pfuze);
if (ret)
return ret;
- pmic_reg_read(p, PFUZE300_DEVICEID, &reg);
- pmic_reg_read(p, PFUZE300_REVID, &rev_id);
+ pmic_reg_read(pfuze, PFUZE300_DEVICEID, &reg);
+ pmic_reg_read(pfuze, PFUZE300_REVID, &rev_id);
printf("PMIC: PFUZE300 DEV_ID=0x%x REV_ID=0x%x\n", reg, rev_id);
- /* SW1A/1B step ramp up time from 2us to 4us/25mV */
+ /* SW1B step ramp up time from 2us to 4us/25mV */
reg = 0x40;
- pmic_reg_write(p, PFUZE300_SW1ACONF, reg);
- pmic_reg_write(p, PFUZE300_SW1BCONF, reg);
+ pmic_reg_write(pfuze, PFUZE300_SW1BCONF, reg);
- /* SW1A/1B standby voltage set to 0.975V */
+ /* SW1B mode to APS/PFM */
+ reg = 0xc;
+ pmic_reg_write(pfuze, PFUZE300_SW1BMODE, reg);
+
+ /* SW1B standby voltage set to 0.975V */
reg = 0xb;
- pmic_reg_write(p, PFUZE300_SW1ASTBY, reg);
- pmic_reg_write(p, PFUZE300_SW1BSTBY, reg);
+ pmic_reg_write(pfuze, PFUZE300_SW1BSTBY, reg);
return 0;
}
+
+#ifdef CONFIG_LDO_BYPASS_CHECK
+void ldo_mode_set(int ldo_bypass)
+{
+ unsigned int value;
+ u32 vddarm;
+
+ struct pmic *p = pfuze;
+
+ if (!p) {
+ printf("No PMIC found!\n");
+ return;
+ }
+
+ /* switch to ldo_bypass mode */
+ if (ldo_bypass) {
+ prep_anatop_bypass();
+ /* decrease VDDARM to 1.275V */
+ pmic_reg_read(pfuze, PFUZE300_SW1BVOLT, &value);
+ value &= ~0x1f;
+ value |= PFUZE300_SW1AB_SETP(1275);
+ pmic_reg_write(pfuze, PFUZE300_SW1BVOLT, value);
+
+ set_anatop_bypass(1);
+ vddarm = PFUZE300_SW1AB_SETP(1175);
+
+ pmic_reg_read(pfuze, PFUZE300_SW1BVOLT, &value);
+ value &= ~0x1f;
+ value |= vddarm;
+ pmic_reg_write(pfuze, PFUZE300_SW1BVOLT, value);
+
+ finish_anatop_bypass();
+
+ printf("switch to ldo_bypass mode!\n");
+ }
+}
+#endif
#endif
int board_init(void)