You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.2 KiB
83 lines
2.2 KiB
9 years ago
|
Content-Type: text/plain; charset="utf-8"
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Transfer-Encoding: 7bit
|
||
|
|
Subject: [v2,1/2] soc: qcom: Add device tree binding for SMEM
|
||
|
|
From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
|
||
|
|
X-Patchwork-Id: 6202201
|
||
|
|
Message-Id: <1428795178-24312-1-git-send-email-bjorn.andersson@sonymobile.com>
|
||
|
|
To: Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
|
||
|
|
Mark Rutland <mark.rutland@arm.com>,
|
||
|
|
Ian Campbell <ijc+devicetree@hellion.org.uk>,
|
||
|
|
Kumar Gala <galak@codeaurora.org>, Jeffrey Hugo <jhugo@codeaurora.org>,
|
||
|
|
Andry Gross <agross@codeaurora.org>
|
||
|
|
Cc: <devicetree@vger.kernel.org>,
|
||
|
|
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
|
||
|
|
<linux-kernel@vger.kernel.org>
|
||
|
|
Date: Sat, 11 Apr 2015 16:32:57 -0700
|
||
|
|
|
||
|
|
Add device tree binding documentation for the Qualcom Shared Memory
|
||
|
|
manager.
|
||
|
|
|
||
|
|
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
|
||
|
|
|
||
|
|
---
|
||
|
|
Changes since v1:
|
||
|
|
- None
|
||
|
|
|
||
|
|
.../devicetree/bindings/soc/qcom/qcom,smem.txt | 49 ++++++++++++++++++++++
|
||
|
|
1 file changed, 49 insertions(+)
|
||
|
|
create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt
|
||
|
|
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt
|
||
|
|
@@ -0,0 +1,49 @@
|
||
|
|
+Qualcomm Shared Memory binding
|
||
|
|
+
|
||
|
|
+This binding describes the Qualcomm Shared Memory, used to share data between
|
||
|
|
+various subsystems and OSes in Qualcomm platforms.
|
||
|
|
+
|
||
|
|
+- compatible:
|
||
|
|
+ Usage: required
|
||
|
|
+ Value type: <stringlist>
|
||
|
|
+ Definition: must be:
|
||
|
|
+ "qcom,smem"
|
||
|
|
+
|
||
|
|
+- memory-region:
|
||
|
|
+ Usage: required
|
||
|
|
+ Value type: <prop-encoded-array>
|
||
|
|
+ Definition: handle to memory reservation for main smem memory region.
|
||
|
|
+
|
||
|
|
+- reg:
|
||
|
|
+ Usage: optional
|
||
|
|
+ Value type: <prop-encoded-array>
|
||
|
|
+ Definition: base address and size pair for any additional memory areas
|
||
|
|
+ of the shared memory.
|
||
|
|
+
|
||
|
|
+- hwspinlocks:
|
||
|
|
+ Usage: required
|
||
|
|
+ Value type: <prop-encoded-array>
|
||
|
|
+ Definition: reference to a hwspinlock used to protect allocations from
|
||
|
|
+ the shared memory
|
||
|
|
+
|
||
|
|
+= EXAMPLE
|
||
|
|
+
|
||
|
|
+ reserved-memory {
|
||
|
|
+ #address-cells = <1>;
|
||
|
|
+ #size-cells = <1>;
|
||
|
|
+ ranges;
|
||
|
|
+
|
||
|
|
+ smem_region: smem@fa00000 {
|
||
|
|
+ reg = <0xfa00000 0x200000>;
|
||
|
|
+ no-map;
|
||
|
|
+ };
|
||
|
|
+ };
|
||
|
|
+
|
||
|
|
+ smem@fa00000 {
|
||
|
|
+ compatible = "qcom,smem";
|
||
|
|
+
|
||
|
|
+ memory-region = <&smem_region>;
|
||
|
|
+ reg = <0xfc428000 0x4000>;
|
||
|
|
+
|
||
|
|
+ hwlocks = <&tcsr_mutex 3>;
|
||
|
|
+ };
|