[PATCH 1/4] ARM: scu: document Snoop Control Unit DT bindings
From: Linus Walleij <hidden>
Date: 2015-05-14 16:11:04
Also in:
linux-devicetree
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
This adds device tree bindings for the ARM Cortex-A5 and Cortex-A9 Snoop Control Units. Signed-off-by: Linus Walleij <redacted> --- Several device trees already contain DT nodes for the Cortex-A9 and Cortex-A5 Snoop Control Units, this documents the already existing and used bindings. --- --- Documentation/devicetree/bindings/arm/scu.txt | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/scu.txt
diff --git a/Documentation/devicetree/bindings/arm/scu.txt b/Documentation/devicetree/bindings/arm/scu.txt
new file mode 100644
index 000000000000..c447680519bb
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/scu.txt@@ -0,0 +1,25 @@ +* ARM Snoop Control Unit (SCU) + +As part of the MPCore complex, Cortex-A5 and Cortex-A9 are provided +with a Snoop Control Unit. The register range is usually 256 (0x100) +bytes. + +References: + +- Cortex-A9: see DDI0407E Cortex-A9 MPCore Technical Reference Manual + Revision r2p0 +- Cortex-A5: see DDI0434B Cortex-A5 MPCore Technical Reference Manual + Revision r0p1 + +- compatible : Should be: + "arm,cortex-a9-scu" + "arm,cortex-a5-scu" + +- reg : Specify the base address and the size of the SCU register window. + +Example: + +scu at a04100000 { + compatible = "arm,cortex-a9-scu"; + reg = <0xa0410000 0x100>; +};
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1.9.3