arm64: dts: imx8mp-var-som-symphony: enable PCIe

Add the PCIe reference clock and enable the PCIe controller and PHY on
the Symphony carrier board.

Describe the PERST# reset GPIO and configure the PHY to use an external
reference clock input.

Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Stefano Radaelli 2026-06-08 16:41:07 +02:00 • committed by Frank Li
commit dd7858bbdf