linux-kernel - [PATCH] dt-bindings: chosen: Document linux,initrd-{start,end}

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Message-Id: <20171209153305.11012-1-j.neuschaefer@gmx.net>
Date:   Sat,  9 Dec 2017 16:33:02 +0100
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     devicetree@...r.kernel.org
Cc:     Jonathan Neuschäfer <j.neuschaefer@....net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        AKASHI Takahiro <takahiro.akashi@...aro.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Kees Cook <keescook@...omium.org>,
        James Morse <james.morse@....com>,
        Frank Rowand <frank.rowand@...y.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: chosen: Document linux,initrd-{start,end}

These properties have been in use for a very long time (at least since
2005), but were never documented in chosen.txt.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
 Documentation/devicetree/bindings/chosen.txt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/chosen.txt b/Documentation/devicetree/bindings/chosen.txt
index e3b13ea7d2ae..45e79172a646 100644
--- a/Documentation/devicetree/bindings/chosen.txt
+++ b/Documentation/devicetree/bindings/chosen.txt
@@ -120,3 +120,18 @@ e.g.
 While this property does not represent a real hardware, the address
 and the size are expressed in #address-cells and #size-cells,
 respectively, of the root node.
+
+linux,initrd-start and linux,initrd-end
+---------------------------------------
+
+These properties hold the physical start and end address of an initrd that's
+loaded by the bootloader. Note that linux,initrd-start is inclusive, but
+linux,initrd-end is exclusive.
+e.g.
+
+/ {
+	chosen {
+		linux,initrd-start = <0x82000000>;
+		linux,initrd-end = <0x82800000>;
+	};
+};
-- 
2.15.0