[PATCH 4/4] smbios: Add documentation and devicetree binding

[Simon Glass]

Add information about how to set SMBIOS properties using the devicetree.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 doc/arch/x86.rst                             |  8 +++++
 doc/device-tree-bindings/board/board_x86.txt | 36 ++++++++++++++++++++
 2 files changed, 44 insertions(+)
 create mode 100644 doc/device-tree-bindings/board/board_x86.txt

diff --git a/doc/arch/x86.rst b/doc/arch/x86.rst
index c6b70ce61a3..45f9ba308c7 100644
--- a/doc/arch/x86.rst
+++ b/doc/arch/x86.rst
@@ -740,6 +740,14 @@ Note that this is a development feature only. It is not intended for use in
 production environments. Also it is not currently part of the automated tests
 so may break in the future.
 
+SMBIOS tables
+-------------
+
+To generate SMBIOS tables in U-Boot, for use by the OS, enable the
+CONFIG_GENERATE_SMBIOS_TABLE option. The easiest way to provide the values to
+use is via the device tree. For details see
+device-tree-bindings/board/board_x86.txt
+
 TODO List
 ---------
 - Audio
diff --git a/doc/device-tree-bindings/board/board_x86.txt b/doc/device-tree-bindings/board/board_x86.txt
new file mode 100644
index 00000000000..3766751896a
--- /dev/null
+++ b/doc/device-tree-bindings/board/board_x86.txt
@@ -0,0 +1,36 @@
+x86 board driver
+================
+
+This driver allows providing board-specific features such as power control
+GPIOs. In addition, the SMBIOS values can be specified in the device tree,
+as below:
+
+An optional 'smbios' subnode can be used to provide these properties.
+
+Optional properties:
+  - manufacturer: Product manufacturer for system / baseboard
+  - product:      Product name
+  - version:      Product version string
+  - serial:       Serial number for system (note that this can be overridden by
+                      the serial# environment variable)
+  - sku:          Product SKU (Stock-Keeping Unit)
+  - family:       Product family
+  - asset-tag:    Asset tag for the motherboard, sometimes used in organisations
+                      to track devices
+
+
+Example:
+
+	board {
+		compatible = "google,coral";
+
+		smbios {
+			manufacturer = "Google";
+			product = "Coral";
+			version = "rev2";
+			serial = "123456789";
+			sku = "sku3";
+			family = "Google_Coral";
+			asset-tag = "ABC123";
+		};
+	};
-- 
2.28.0.681.g6f77f65b4e-goog