MLK-25349 imx8mq_evk: Enable PCIE VREG for 3.3v PHY supply

The bit12 of IOMUXC_GPR_GPR14/16 are used to bypass internal regulator for
two PCIE PHYs:

When PCIE_VPH = 3.3V, enable internal 3.3V to 1.8V regulator to generate the
1.8V, the register of IOMUXC_GPR_GPR14/16 bit 12 = 1'b0;
When PCIE_VPH = 1.8V, disable the internal 3.3V to 1.8V regulator, using the
external 1.8V for the PHY, the register of IOMUXC_GPR_GPR14/16 bit 12 = 1'b1;"

This bit is reset to 1 which means bypass the internal regulator. However the
EVK board connects 3.3v supply to PCIE_VPH. So we must enable the regulator,
otherwise it could potentially impact the product lifetime of the device.

Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Richard Zhu <hongxing.zhu@nxp.com>
(cherry picked from commit 3fd0991551c8236319b8bf29ca47813c9242c18f)

0 files changed, 0 insertions, 0 deletions