Some buses might not be able to handle 64-bit sized MMIO accesses, on
otherwise 64-bit systems. Introduce a boolean property to cater for this
limitation.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
---
.../devicetree/bindings/common-properties.txt | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/Documentation/devicetree/bindings/common-properties.txt b/Documentation/devicetree/bindings/common-properties.txt
index 98a28130e100..3783510102c3 100644
--- a/Documentation/devicetree/bindings/common-properties.txt
+++ b/Documentation/devicetree/bindings/common-properties.txt
@@ -83,3 +83,18 @@ gpio@0 {
#gpio-cells = <2>;
#daisy-chained-devices = <3>;
};
+
+Broken 64-bit buses
+-------------------
+
+Some buses might not be able to handle 64-bit sized MMIO accesses, on otherwise
+64-bit systems. This property is only relevant to MMIO bus nodes.
+
+Optional properties:
+ - 64bit-mmio-broken: Boolean
+
+Example:
+pcie@0 {
+ compatible = "name";
+ 64bit-mmio-broken;
+};
--
2.30.1
