linux-kernel - [PATCH] dt-bindings: memory-controllers: add Samsung S5Pv210 SoC DMC

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Message-Id: <20240312190348.724361-1-krzysztof.kozlowski@linaro.org>
Date: Tue, 12 Mar 2024 20:03:48 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org
Subject: [PATCH] dt-bindings: memory-controllers: add Samsung S5Pv210 SoC DMC

Document bindings for the S5Pv210 SoC DMC memory controller, already
used in DTS and Linux CPU frequency scaling driver.  The binding looks
quite empty and is most likely incomplete, but the platform is so old
that no one expects any effort on this, except documenting what is in
DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../samsung,s5pv210-dmc.yaml                  | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/samsung,s5pv210-dmc.yaml

diff --git a/Documentation/devicetree/bindings/memory-controllers/samsung,s5pv210-dmc.yaml b/Documentation/devicetree/bindings/memory-controllers/samsung,s5pv210-dmc.yaml
new file mode 100644
index 000000000000..c0e47055f28c
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/samsung,s5pv210-dmc.yaml
@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/samsung,s5pv210-dmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung S5Pv210 SoC Dynamic Memory Controller
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@...nel.org>
+
+description:
+  Dynamic Memory Controller interfaces external JEDEC DDR-type SDRAM.
+
+properties:
+  compatible:
+    const: samsung,s5pv210-dmc
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    memory-controller@...00000 {
+        compatible = "samsung,s5pv210-dmc";
+        reg = <0xf0000000 0x1000>;
+    };
-- 
2.34.1