diff options
| author | Anson Huang <b20788@freescale.com> | 2015-09-01 01:16:28 +0800 |
|---|---|---|
| committer | Anson Huang <b20788@freescale.com> | 2015-09-01 17:50:27 +0800 |
| commit | f432dfdaeb80ecb2a78805422baef64493f63060 (patch) | |
| tree | 197f30ea99714297518b1381e859afc339d18887 | |
| parent | 54df421991ac853e5b26036fd2205d5318e832bc (diff) | |
| download | u-boot-imx-f432dfdaeb80ecb2a78805422baef64493f63060.zip u-boot-imx-f432dfdaeb80ecb2a78805422baef64493f63060.tar.gz u-boot-imx-f432dfdaeb80ecb2a78805422baef64493f63060.tar.bz2 | |
MLK-11461 imx: imx6ul: enable LDO bypass for 9x9 EVK board
i.MX6UL-9x9-EVK board has PFUZE3000, so enable LDO
bypass support for this board.
Signed-off-by: Anson Huang <b20788@freescale.com>
| -rw-r--r-- | board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c | 61 | ||||
| -rw-r--r-- | include/configs/mx6ul_14x14_evk.h | 4 | ||||
| -rw-r--r-- | include/power/pfuze300_pmic.h | 2 |
3 files changed, 55 insertions, 12 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, ®); - pmic_reg_read(p, PFUZE300_REVID, &rev_id); + pmic_reg_read(pfuze, PFUZE300_DEVICEID, ®); + 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) diff --git a/include/configs/mx6ul_14x14_evk.h b/include/configs/mx6ul_14x14_evk.h index ba2130b..cc1df2e 100644 --- a/include/configs/mx6ul_14x14_evk.h +++ b/include/configs/mx6ul_14x14_evk.h @@ -20,8 +20,10 @@ #define CONFIG_DISPLAY_CPUINFO #define CONFIG_DISPLAY_BOARDINFO -/* DCDC used on EVK, no PMIC */ +#if !defined(CONFIG_MX6UL_9X9_LPDDR2) +/* DCDC used on 14x14 EVK, no PMIC */ #undef CONFIG_LDO_BYPASS_CHECK +#endif /* uncomment for PLUGIN mode support */ /* #define CONFIG_USE_PLUGIN */ diff --git a/include/power/pfuze300_pmic.h b/include/power/pfuze300_pmic.h index c7ec5ce..827576e 100644 --- a/include/power/pfuze300_pmic.h +++ b/include/power/pfuze300_pmic.h @@ -73,6 +73,8 @@ enum { PMIC_NUM_OF_REGS = 0x7F, }; +#define PFUZE300_SW1AB_SETP(x) ((x - 700) / 25) + int power_pfuze300_init(unsigned char bus); #endif |