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| author | Bai Ping <b51503@freescale.com> | 2015-10-09 21:04:01 +0800 |
|---|---|---|
| committer | Bai Ping <b51503@freescale.com> | 2015-10-13 01:06:10 +0800 |
| commit | 8b7464a118af5f2bf3bee2561901d44c80f518ba (patch) | |
| tree | fe62073f8fafbfc9f3f9bd10f4ab7e1d8ac7169c /board/freescale/mx7d_12x12_ddr3_arm2 | |
| parent | ddeb7aee6f182ec9bc5593b4a5c1210999fab349 (diff) | |
| download | u-boot-imx-8b7464a118af5f2bf3bee2561901d44c80f518ba.zip u-boot-imx-8b7464a118af5f2bf3bee2561901d44c80f518ba.tar.gz u-boot-imx-8b7464a118af5f2bf3bee2561901d44c80f518ba.tar.bz2 | |
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>
Diffstat (limited to 'board/freescale/mx7d_12x12_ddr3_arm2')
| -rw-r--r-- | board/freescale/mx7d_12x12_ddr3_arm2/mx7d_12x12_ddr3_arm2.c | 6 |
1 files changed, 6 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 19d1ebb..b43a618 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 |