PCI/DOE: Allow enabling DOE without CXL

PCIe devices (not CXL) can support DOE as well, so allow DOE to be enabled
even if CXL isn't.

Link: https://lore.kernel.org/r/20250306075211.1855177-4-alistair@alistair23.me
Signed-off-by: Alistair Francis <alistair@alistair23.me>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 2fbd379923fd1edbf32a4b0e449fbd22d5a2ab55..fff4f3c6f6d3668e29d8099dfce9e114ec7559d9 100644 (file)
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -122,7 +122,10 @@ config PCI_ATS
        bool
 
 config PCI_DOE
-       bool
+       bool "Enable PCI Data Object Exchange (DOE) support"
+       help
+         Say Y here if you want be able to communicate with PCIe DOE
+         mailboxes.
 
 config PCI_ECAM
        bool