linux-kernel - [PATCH 1/4] dt-bindings: firmware: Add bindings for Samsung smc

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Date:   Wed, 13 Jul 2022 13:53:57 +0900
From:   Dongjin Yang <dj76.yang@...sung.com>
To:     "jesper.nilsson@...s.com" <jesper.nilsson@...s.com>,
        "lars.persson@...s.com" <lars.persson@...s.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
        "lee.jones@...aro.org" <lee.jones@...aro.org>
CC:     "javierm@...hat.com" <javierm@...hat.com>,
        "bjorn.andersson@...aro.org" <bjorn.andersson@...aro.org>,
        "linux-arm-kernel@...s.com" <linux-arm-kernel@...s.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Moon-Ki Jun <moonki.jun@...sung.com>,
        Sang Min Kim <hypmean.kim@...sung.com>,
        Wangseok Lee <wangseok.lee@...sung.com>,
        Dongjin Yang <dj76.yang@...sung.com>
Subject: [PATCH 1/4] dt-bindings: firmware: Add bindings for Samsung smc

Add an devicetree bindings for Samsung secure monitor call service.
This driver is used for SoCs produced by Samsung Foundry to provide
SMC call. This patch supports register read/write request to secure
monitor. Also, SMC call request which uses shared memory to exchange
the data between kernel and secure monitor.

Signed-off-by: Dongjin Yang <dj76.yang@...sung.com>
---
 .../bindings/firmware/samsung,smccc-svc.yaml       | 31 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 32 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/samsung,smccc-svc.yaml

diff --git a/Documentation/devicetree/bindings/firmware/samsung,smccc-svc.yaml b/Documentation/devicetree/bindings/firmware/samsung,smccc-svc.yaml
new file mode 100644
index 000000000000..427c42a6cd75
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/samsung,smccc-svc.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/samsung,smccc-svc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Secure Monitor call service
+
+maintainers:
+  - Jesper Nilsson <jesper.nilsson@...s.com>
+
+description: |
+  The file documents device tree bindings of Samsung secure monitor
+  call service.
+
+properties:
+  compatible:
+    const: samsung,smccc-svc
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+
+    samsung-svc {
+        compatible = "samsung,smccc-svc";
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 20133dcd8ce9..6763746c349f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1862,6 +1862,7 @@ M:	Jesper Nilsson <jesper.nilsson@...s.com>
 M:	Lars Persson <lars.persson@...s.com>
 L:	linux-arm-kernel@...s.com
 S:	Maintained
+F:	Documentation/devicetree/bindings/firmware/samsung,smccc-svc.yaml
 F:	Documentation/devicetree/bindings/pinctrl/axis,artpec6-pinctrl.txt
 F:	arch/arm/boot/dts/artpec6*
 F:	arch/arm/mach-artpec
-- 
2.9.5