linux-kernel - [PATCH 1/5] dt-bindings: memory: Document Tegra210 EMC table

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Date:   Fri, 17 Dec 2021 17:59:15 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Jon Hunter <jonathanh@...dia.com>, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] dt-bindings: memory: Document Tegra210 EMC table

From: Thierry Reding <treding@...dia.com>

Add device tree bindings for the Tegra210 EMC table that is passed via a
reserved-memory device tree node.

Signed-off-by: Thierry Reding <treding@...dia.com>
---
 .../nvidia,tegra210-emc-table.yaml            | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reserved-memory/nvidia,tegra210-emc-table.yaml

diff --git a/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra210-emc-table.yaml b/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra210-emc-table.yaml
new file mode 100644
index 000000000000..035a50fe3ee4
--- /dev/null
+++ b/Documentation/devicetree/bindings/reserved-memory/nvidia,tegra210-emc-table.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reserved-memory/nvidia,tegra210-emc-table.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra210 EMC Frequency Table Device Tree Bindings
+
+maintainers:
+  - Thierry Reding <thierry.reding@...il.com>
+  - Jon Hunter <jonathanh@...dia.com>
+
+description: On Tegra210, firmware passes a binary representation of the
+  EMC frequency table via a reserved memory region.
+
+allOf:
+  - $ref: "reserved-memory.yaml"
+
+properties:
+  compatible:
+    const: nvidia,tegra210-emc-table
+
+  reg:
+    description: region of memory reserved by firmware to pass the EMC
+      frequency table
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
-- 
2.34.1