mb/siemens/mc_ehl1: Adjust PCIe clock settings in devicetree

On mc_ehl1 there are three of the 6 PCIe clocks used to drive PCIe
devices. None of the used clock output is dedicated to a special device
(CLK0 drives several devices on the mainboard, CLK1 and CLK2 are
connected to a PCIe switch). Therefore do not use a port mapping of the
clocks to avoid a stopping clock once a device is missing and the
matching root port is disabled. Instead set the mapping to
'PCIE_CLK_FREE' to have a free running clock.

In addition, use the defined constant 'PCIE_CLK_NOTUSED' instead of the
value 0xFF to disable the CLKREQ-feature and unused clocks.

Change-Id: I2beea76ff8fefd79f476bef343d13495b45cdfcf
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58740
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions