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Subject: [PATCH 1/4] dt-bindings: firmware: Add bindings for Samsung smc
Reply-To: dj76.yang@samsung.com
Sender: Dongjin Yang <dj76.yang@samsung.com>
From:   Dongjin Yang <dj76.yang@samsung.com>
To:     "jesper.nilsson@axis.com" <jesper.nilsson@axis.com>,
        "lars.persson@axis.com" <lars.persson@axis.com>,
        "robh+dt@kernel.org" <robh+dt@kernel.org>,
        "krzk+dt@kernel.org" <krzk+dt@kernel.org>,
        "lee.jones@linaro.org" <lee.jones@linaro.org>
CC:     "javierm@redhat.com" <javierm@redhat.com>,
        "bjorn.andersson@linaro.org" <bjorn.andersson@linaro.org>,
        "linux-arm-kernel@axis.com" <linux-arm-kernel@axis.com>,
        "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Moon-Ki Jun <moonki.jun@samsung.com>,
        Sang Min Kim <hypmean.kim@samsung.com>,
        Wangseok Lee <wangseok.lee@samsung.com>,
        Dongjin Yang <dj76.yang@samsung.com>
Message-ID: <20220713045357epcms1p8ccfe1c489edfd066d0e41ff928c0af71@epcms1p8>
Date:   Wed, 13 Jul 2022 13:53:57 +0900
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References: <CGME20220713045357epcms1p8ccfe1c489edfd066d0e41ff928c0af71@epcms1p8>
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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@samsung.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@axis.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@axis.com>
 M:	Lars Persson <lars.persson@axis.com>
 L:	linux-arm-kernel@axis.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