[PATCH v7 2/7] dt-bindings: sram: describe option to reserve parts of the memory
From: Grant Likely <hidden>
Date: 2014-02-05 11:12:47
Also in:
linux-devicetree
On Mon, 20 Jan 2014 16:42:58 +0100, Heiko St??bner [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Some SoCs need parts of their sram for special purposes. So while being part of the peripheral, it should not be part of the genpool controlling the sram. Therefore add an option mmio-sram-reserved to keep arbitrary portions of the sram from general usage. Suggested-by: Rob Herring <redacted> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Ulrich Prinz <redacted> Acked-by: Rob Herring <robh@kernel.org> --- Documentation/devicetree/bindings/misc/sram.txt | 8 ++++++++ 1 file changed, 8 insertions(+)diff --git a/Documentation/devicetree/bindings/misc/sram.txt b/Documentation/devicetree/bindings/misc/sram.txt index 4d0a00e..09ee7a3 100644 --- a/Documentation/devicetree/bindings/misc/sram.txt +++ b/Documentation/devicetree/bindings/misc/sram.txt@@ -8,9 +8,17 @@ Required properties: - reg : SRAM iomem address range +Optional properties: + +- mmio-sram-reserved: ordered list of reserved chunks inside the sram that + should not be used by the operating system. + Format is <base size>, <base size>, ...; with base being relative to the + reg property base. +
We've now got a draft binding for reserved memory. Can you use the format here? Basically each reserved region is a sub node with either a reg property or a size property. This is specifically for sram, so I won't make a big deal about it, but it would be good to have some commonality. g.