From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rishabh Bhatnagar Subject: [PATCH v6 1/2] dt-bindings: Documentation for qcom, llcc Date: Tue, 8 May 2018 13:22:00 -0700 Message-ID: <1525810921-15878-2-git-send-email-rishabhb@codeaurora.org> References: <1525810921-15878-1-git-send-email-rishabhb@codeaurora.org> Return-path: In-Reply-To: <1525810921-15878-1-git-send-email-rishabhb@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm@lists.infradead.org, tsoni@codeaurora.org, ckadabi@codeaurora.org, evgreen@chromium.org, robh@kernel.org, Rishabh Bhatnagar List-Id: devicetree@vger.kernel.org Documentation for last level cache controller device tree bindings, client bindings usage examples. Signed-off-by: Channagoud Kadabi Signed-off-by: Rishabh Bhatnagar --- .../devicetree/bindings/arm/msm/qcom,llcc.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 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..a586a17 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/msm/qcom,llcc.txt @@ -0,0 +1,32 @@ +== 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: + Definition: must be "qcom,sdm845-llcc" + +- reg: + Usage: required + Value Type: + Definition: Start address and the range of the LLCC registers. + +- max-slices: + usage: required + Value Type: + Definition: Number of cache slices supported by hardware + +Example: + + llcc: qcom,llcc@1100000 { + compatible = "qcom,sdm845-llcc"; + reg = <0x1100000 0x250000>; + max-slices = <32>; + }; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project