linux-kernel - [PATCH v7 1/2] dt-bindings: Documentation for qcom, llcc

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Date:   Wed, 16 May 2018 10:43:42 -0700
From:   Rishabh Bhatnagar <rishabhb@...eaurora.org>
To:     linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, linux-arm@...ts.infradead.org,
        tsoni@...eaurora.org, ckadabi@...eaurora.org, evgreen@...omium.org,
        robh@...nel.org, Rishabh Bhatnagar <rishabhb@...eaurora.org>
Subject: [PATCH v7 1/2] dt-bindings: Documentation for qcom, llcc

Documentation for last level cache controller device tree bindings,
client bindings usage examples.

Signed-off-by: Channagoud Kadabi <ckadabi@...eaurora.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@...eaurora.org>
---
 .../devicetree/bindings/arm/msm/qcom,llcc.txt      | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,llcc.txt

diff --git a/Documentation/devicetree/bindings/arm/msm/qcom,llcc.txt b/Documentation/devicetree/bindings/arm/msm/qcom,llcc.txt
new file mode 100644
index 0000000..0ebbf0a
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/qcom,llcc.txt
@@ -0,0 +1,26 @@
+== Introduction==
+
+LLCC (Last Level Cache Controller) provides last level of cache memory in SOC,
+that can be shared by multiple clients. Clients here are different cores in the
+SOC, the idea is to minimize the local caches at the clients and migrate to
+common pool of memory. Cache memory is divided into partitions called slices
+which are assigned to clients. Clients can query the slice details, activate
+and deactivate them.
+
+Properties:
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: must be "qcom,sdm845-llcc"
+
+- reg:
+	Usage: required
+	Value Type: <prop-encoded-array>
+	Definition: Start address and the the size of the register region.
+
+Example:
+
+	qcom,llcc@...0000 {
+		compatible = "qcom,sdm845-llcc";
+		reg = <0x1100000 0x250000>;
+	};
-- 
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