From: nikitos.tr@gmail.com
To: agross@kernel.org, bjorn.andersson@linaro.org
Cc: robh+dt@kernel.org, linux-arm-msm@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Nikita Travkin <nikitos.tr@gmail.com>
Subject: [PATCH 1/2] dt-bindings: soc: qcom: Add bindings for Qualcomm Memshare service
Date: Fri, 19 Mar 2021 22:23:20 +0500 [thread overview]
Message-ID: <20210319172321.22248-2-nikitos.tr@gmail.com> (raw)
In-Reply-To: <20210319172321.22248-1-nikitos.tr@gmail.com>
From: Nikita Travkin <nikitos.tr@gmail.com>
Add DT bindings for memshare: QMI service that allocates
memory per remote processor request.
Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
---
.../bindings/soc/qcom/qcom,memshare.yaml | 109 ++++++++++++++++++
include/dt-bindings/soc/qcom,memshare.h | 10 ++
2 files changed, 119 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml
create mode 100644 include/dt-bindings/soc/qcom,memshare.h
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml
new file mode 100644
index 000000000000..ebdf128b066c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml
@@ -0,0 +1,109 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/qcom/qcom,memshare.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm QMI Shared Memory Service
+
+description: |
+ This driver provides a QMI service that allows remote processors (like modem)
+ to request additional memory. It is used for applications like GPS in modem.
+
+maintainers:
+ - Nikita Travkin <nikitos.tr@gmail.com>
+
+properties:
+ compatible:
+ const: qcom,memshare
+
+ qcom,legacy-client:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: Phandle to a memshare client node used for legacy requests.
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+patternProperties:
+ "^.*@[0-9]+$":
+ type: object
+
+ properties:
+ reg:
+ description: Proc-ID for clients in this node.
+
+ qcom,qrtr-node:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Node from which the requests are expected.
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ patternProperties:
+ "^.*@[0-9]+$":
+ type: object
+
+ properties:
+ reg:
+ description: ID of this client.
+
+ memory-region:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ Reserved memory region that should be used for allocation.
+
+ required:
+ - reg
+
+ required:
+ - reg
+ - qcom,qrtr-node
+
+required:
+ - compatible
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/qcom,memshare.h>
+
+ reserved-memory {
+
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ gps_mem: gps@93c00000 {
+ reg = <0x0 0x93c00000 0x0 0x200000>;
+ no-map;
+ };
+ };
+
+ memshare {
+ compatible = "qcom,memshare";
+ qcom,legacy-client = <&memshare_gps>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mpss@0 {
+ reg = <MEMSHARE_PROC_MPSS_V01>;
+ qcom,qrtr-node = <0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ memshare_gps: gps@0 {
+ reg = <0>;
+ memory-region = <&gps_mem>;
+ };
+ };
+ };
+
+...
diff --git a/include/dt-bindings/soc/qcom,memshare.h b/include/dt-bindings/soc/qcom,memshare.h
new file mode 100644
index 000000000000..4cef1ef75d09
--- /dev/null
+++ b/include/dt-bindings/soc/qcom,memshare.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __DT_QCOM_MEMSHARE_H__
+#define __DT_QCOM_MEMSHARE_H__
+
+#define MEMSHARE_PROC_MPSS_V01 0
+#define MEMSHARE_PROC_ADSP_V01 1
+#define MEMSHARE_PROC_WCNSS_V01 2
+
+#endif /* __DT_QCOM_MEMSHARE_H__ */
--
2.27.0
next prev parent reply other threads:[~2021-03-19 17:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 17:23 [PATCH 0/2] soc: qcom: Add Qualcomm Memshare QMI service nikitos.tr
2021-03-19 17:23 ` nikitos.tr [this message]
2021-03-30 14:40 ` [PATCH 1/2] dt-bindings: soc: qcom: Add bindings for Qualcomm Memshare service Rob Herring
2021-04-10 8:05 ` Nikita Travkin
2021-04-14 3:15 ` Bjorn Andersson
2021-04-15 12:03 ` Nikita Travkin
2021-03-19 17:23 ` [PATCH 2/2] soc: qcom: Add Qualcomm Memshare QMI service nikitos.tr
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