[PATCH] arm/docs: Clarify legacy DT bindings on UEFI

[Luca Fancellu <luca.fancellu@xxxxxxx>]

Legacy compatible strings for dom0 modules are not
supported when booting using UEFI, the documentation
doesn't mention that.

Add a phrase to docs/misc/arm/device-tree/booting.txt
to clarify it.

Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx>
---
 docs/misc/arm/device-tree/booting.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/docs/misc/arm/device-tree/booting.txt 
b/docs/misc/arm/device-tree/booting.txt
index c6a775f4e8..017c0f13eb 100644
--- a/docs/misc/arm/device-tree/booting.txt
+++ b/docs/misc/arm/device-tree/booting.txt
@@ -51,6 +51,8 @@ Each node contains the following properties:
        Xen 4.4 supported a different set of legacy compatible strings
        which remain supported such that systems supporting both 4.4
        and later can use a single DTB.
+       However when booting Xen using UEFI and Device Tree, the legacy
+       compatible strings are not supported.
 
        - "xen,multiboot-module" equivalent to "multiboot,module"
        - "xen,linux-zimage"     equivalent to "multiboot,kernel"
-- 
2.17.1