Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/scu.txt b/Documentation/devicetree/bindings/arm/scu.txt
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+* 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
+- ARM11 MPCore: see DDI0360F ARM 11 MPCore Processor Technical Reference
+  Manial Revision r2p0
+
+- compatible : Should be:
+	"arm,cortex-a9-scu"
+	"arm,cortex-a5-scu"
+	"arm,arm11mp-scu"
+
+- reg : Specify the base address and the size of the SCU register window.
+
+Example:
+
+scu@a04100000 {
+	compatible = "arm,cortex-a9-scu";
+	reg = <0xa0410000 0x100>;
+};