diff options
| author | Bai Ping <b51503@freescale.com> | 2015-10-09 21:04:01 +0800 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2016-02-17 10:54:03 +0100 |
| commit | 957fe122dc6b251c6f7b2acc2d01bf18c518c839 (patch) | |
| tree | b0eae28736b072130223f7a2e9d560d1be0fb5cf | |
| parent | 3333619812c8ae0a6d712bfa9e3447fed939d42b (diff) | |
MLK-11675 ARM: imx: change the VDD_SOC normal voltage to 0.975V
According to the latest datasheet(Rev. C Draft 1, 10/2015) of
i.MX7D, change the VDD_SOC voltage to 0.95V in run mode, and
add a 25mV margin to cover the IR drop and board tolerance.
So setting VDD_SOC voltage to 0.975V.
Signed-off-by: Bai Ping <b51503@freescale.com>
5 files changed, 37 insertions, 0 deletions
diff --git a/board/freescale/mx7d_12x12_ddr3_arm2/mx7d_12x12_ddr3_arm2.c b/board/freescale/mx7d_12x12_ddr3_arm2/mx7d_12x12_ddr3_arm2.c index 19d1ebbaed..b43a61885e 100644 --- a/board/freescale/mx7d_12x12_ddr3_arm2/mx7d_12x12_ddr3_arm2.c +++ b/board/freescale/mx7d_12x12_ddr3_arm2/mx7d_12x12_ddr3_arm2.c @@ -326,6 +326,12 @@ int power_init_board(void) pmic_reg_write(p, PFUZE300_SW1ASTBY, reg); pmic_reg_write(p, PFUZE300_SW1BSTBY, reg); + /* decrease SW1B normal voltage to 0.975V */ + pmic_reg_read(p, PFUZE300_SW1BVOLT, ®); + reg &= ~0x1f; + reg |= PFUZE300_SW1AB_SETP(975); + pmic_reg_write(p, PFUZE300_SW1BVOLT, reg); + return 0; } #endif diff --git a/board/freescale/mx7d_12x12_lpddr3_arm2/mx7d_12x12_lpddr3_arm2.c b/board/freescale/mx7d_12x12_lpddr3_arm2/mx7d_12x12_lpddr3_arm2.c index c41ccf369f..bfaf34a537 100644 --- a/board/freescale/mx7d_12x12_lpddr3_arm2/mx7d_12x12_lpddr3_arm2.c +++ b/board/freescale/mx7d_12x12_lpddr3_arm2/mx7d_12x12_lpddr3_arm2.c @@ -860,6 +860,12 @@ int power_init_board(void) reg |= 0x20; pmic_reg_write(p, PFUZE300_SW2MODE, reg); + /* decrease SW1B normal voltage to 0.975V */ + pmic_reg_read(p, PFUZE300_SW1BVOLT, ®); + reg &= ~0x1f; + reg |= PFUZE300_SW1AB_SETP(975); + pmic_reg_write(p, PFUZE300_SW1BVOLT, reg); + return 0; } #endif diff --git a/board/freescale/mx7d_19x19_ddr3_arm2/mx7d_19x19_ddr3_arm2.c b/board/freescale/mx7d_19x19_ddr3_arm2/mx7d_19x19_ddr3_arm2.c index 6b75ec6a03..5e1e178591 100644 --- a/board/freescale/mx7d_19x19_ddr3_arm2/mx7d_19x19_ddr3_arm2.c +++ b/board/freescale/mx7d_19x19_ddr3_arm2/mx7d_19x19_ddr3_arm2.c @@ -630,6 +630,12 @@ int power_init_board(void) pmic_reg_write(p, PFUZE300_SW1ASTBY, reg); pmic_reg_write(p, PFUZE300_SW1BSTBY, reg); + /* decrease SW1B normal voltage to 0.975V */ + pmic_reg_read(p, PFUZE300_SW1BVOLT, ®); + reg &= ~0x1f; + reg |= PFUZE300_SW1AB_SETP(975); + pmic_reg_write(p, PFUZE300_SW1BVOLT, reg); + return 0; } #endif diff --git a/board/freescale/mx7d_19x19_lpddr3_arm2/mx7d_19x19_lpddr3_arm2.c b/board/freescale/mx7d_19x19_lpddr3_arm2/mx7d_19x19_lpddr3_arm2.c index 3e779515db..9a5bf2ad31 100644 --- a/board/freescale/mx7d_19x19_lpddr3_arm2/mx7d_19x19_lpddr3_arm2.c +++ b/board/freescale/mx7d_19x19_lpddr3_arm2/mx7d_19x19_lpddr3_arm2.c @@ -555,6 +555,7 @@ static const struct boot_mode board_boot_modes[] = { #define PFUZE_LDOGCTL 0x69 #define PFUZE300_SW1ASTBY 0x21 #define PFUZE300_SW1AMODE 0x23 +#define PFUZE300_SW1BVOLT 0x2e #define PFUZE300_SW1BSTBY 0x2f #define PFUZE300_SW1BMODE 0x31 @@ -609,6 +610,18 @@ static int setup_pmic_voltages(void) printf("Set PFUZE300_SW1BSTBY error!\n"); return -1; } + + /* decrease SW1B normal voltage to 0.975V */ + if (i2c_read(CONFIG_PMIC_I2C_SLAVE, PFUZE300_SW1BVOLT, 1, &value, 1)) { + printf("Read SW1BVOLT error!\n"); + return -1; + } + value &= ~0x1f; + value |= 0x0b; + if (i2c_write(CONFIG_PMIC_I2C_SLAVE, PFUZE300_SW1BVOLT, 1, &value, 1)) { + printf("Set SW1BVOLT error!\n"); + return -1; + } } return 0; diff --git a/board/freescale/mx7dsabresd/mx7dsabresd.c b/board/freescale/mx7dsabresd/mx7dsabresd.c index 30d4b2970e..59fb352780 100644 --- a/board/freescale/mx7dsabresd/mx7dsabresd.c +++ b/board/freescale/mx7dsabresd/mx7dsabresd.c @@ -964,6 +964,12 @@ int power_init_board(void) pmic_reg_write(p, PFUZE300_SW1ASTBY, reg); pmic_reg_write(p, PFUZE300_SW1BSTBY, reg); + /* decrease SW1B normal voltage to 0.975V */ + pmic_reg_read(p, PFUZE300_SW1BVOLT, ®); + reg &= ~0x1f; + reg |= PFUZE300_SW1AB_SETP(975); + pmic_reg_write(p, PFUZE300_SW1BVOLT, reg); + return 0; } #endif |