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| author | Robin Gong <B38343@freescale.com> | 2012-11-16 09:21:51 +0800 |
|---|---|---|
| committer | Robin Gong <B38343@freescale.com> | 2012-11-16 14:08:52 +0800 |
| commit | 3263f7d0a7963bffaeac296ef8a73def3a585627 (patch) | |
| tree | 54caeba54ef5e4e5193cc41963f1039fe6e742ee /board | |
| parent | 06e8a025d0d05414eff285a47a31eb8d8a548f68 (diff) | |
| download | u-boot-imx-3263f7d0a7963bffaeac296ef8a73def3a585627.zip u-boot-imx-3263f7d0a7963bffaeac296ef8a73def3a585627.tar.gz u-boot-imx-3263f7d0a7963bffaeac296ef8a73def3a585627.tar.bz2 | |
ENGR00233881 Camera mx6q_sabresd:swap VGEN5&VGEN3 to fix camera streaks issue
On mx6q_sabresd RevC board, there is camera streaks issue, after HW check, they
think there is current limit risk because VDDHIGH_IN and camera 2.8V power
share the same VGEN5, they suggest seprate them, so we use VGEN5 as VDDHIGH_IN
and use VGEN3 as camera 2.8V power supply. Also increase VDDHIG_IN from 2.8V to
3.0V to align with latest datasheet
Signed-off-by: Robin Gong <B38343@freescale.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/mx6q_sabresd/mx6q_sabresd.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/board/freescale/mx6q_sabresd/mx6q_sabresd.c b/board/freescale/mx6q_sabresd/mx6q_sabresd.c index 3fa3976..d6b4062 100644 --- a/board/freescale/mx6q_sabresd/mx6q_sabresd.c +++ b/board/freescale/mx6q_sabresd/mx6q_sabresd.c @@ -777,6 +777,33 @@ static int setup_pmic_voltages(void) return -1; } printf("Found PFUZE100! deviceid=%x,revid=%x\n", value, rev_id); + /*For camera streaks issue,swap VGEN5 and VGEN3 to power camera. + *sperate VDDHIGH_IN and camera 2.8V power supply, after switch: + *VGEN5 for VDDHIGH_IN and increase to 3V to align with datasheet + *VGEN3 for camera 2.8V power supply + */ + /*increase VGEN3 from 2.5 to 2.8V*/ + if (i2c_read(0x8, 0x6e, 1, &value, 1)) { + printf("Read VGEN3 error!\n"); + return -1; + } + value &= ~0xf; + value |= 0xa; + if (i2c_write(0x8, 0x6e, 1, &value, 1)) { + printf("Set VGEN3 error!\n"); + return -1; + } + /*increase VGEN5 from 2.8 to 3V*/ + if (i2c_read(0x8, 0x70, 1, &value, 1)) { + printf("Read VGEN5 error!\n"); + return -1; + } + value &= ~0xf; + value |= 0xc; + if (i2c_write(0x8, 0x70, 1, &value, 1)) { + printf("Set VGEN5 error!\n"); + return -1; + } #if CONFIG_MX6_INTER_LDO_BYPASS /*VDDCORE 1.1V@800Mhz: SW1AB*/ |