tree 168ab422f8adde9ff159e9c005f655802c269d11
parent 558cd81bdd432769b59bff01240c44f82cfb1a9d
author Rob Herring <robh@kernel.org> 1490021056 -0500
committer David Gibson <david@gibson.dropbear.id.au> 1490067937 +1100

checks: Add bus checks for PCI buses

Add PCI bridge and device node checks. We identify PCI bridges with
'device_type = "pci"' as only PCI bridges should set that property. For
bridges, check that node name is pci or pcie, ranges and bus-range are
present, and #address-cells and #size-cells are correct.

For devices, check the reg property fields are correct for the first
element (the config address). Check that the unit address is formatted
corectly based on the reg property. Device unit addresses are in the
form DD or DD,F where DD is the device 0-0x1f and F is the function 0-7.
Also, check that the bus number is within the expected range defined by
bridge's bus-ranges.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Rob Herring <robh@kernel.org>
[dwg: Added a missing check dependency]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>