This change sets the VLDO4 settings output to 2.8V in PMIC initialization so that the MIPI DSI and MIPI CSI input voltage is 2.8V as per the schematics.
Signed-off-by: Gautam Bhat mindentropy@gmail.com ---
board/freescale/mx7dsabresd/mx7dsabresd.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/board/freescale/mx7dsabresd/mx7dsabresd.c b/board/freescale/mx7dsabresd/mx7dsabresd.c index ecea5a529a..8df7ed575a 100644 --- a/board/freescale/mx7dsabresd/mx7dsabresd.c +++ b/board/freescale/mx7dsabresd/mx7dsabresd.c @@ -341,6 +341,7 @@ int power_init_board(void) { struct udevice *dev; int ret, dev_id, rev_id; + uint regval;
ret = pmic_get("pfuze3000", &dev); if (ret == -ENODEV) @@ -354,6 +355,15 @@ int power_init_board(void)
pmic_clrsetbits(dev, PFUZE3000_LDOGCTL, 0, 1);
+ /* + * Set the voltage of VLDO4 output to 2.8V which feeds + * the MIPI DSI and MIPI CSI inputs. + */ + regval = pmic_reg_read(dev, PFUZE3000_VLD4CTL); + regval &= ~(0xF); + regval |= 0xA; /* Set to 2.8V */ + pmic_reg_write(dev, PFUZE3000_VLD4CTL, regval); + return 0; } #endif