[RFC 01/13] dt-bindings: Introduce 64bit-mmio-broken
From: Nicolas Saenz Julienne <hidden>
Date: 2021-02-26 14:04:54
Also in:
linux-devicetree, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- .../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
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