[PATCH v2 2/3] TPM2.0: TPM Device Tree Documentation

[Nayna Jain <nayna-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>]

Added device tree binding documentation for I2C base TPM.

Changelog v2:
        * Added documentation in v2.

Signed-off-by: Nayna Jain <nayna-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
 Documentation/devicetree/bindings/i2c/i2c-tpm.txt | 31 +++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/i2c-tpm.txt

diff --git a/Documentation/devicetree/bindings/i2c/i2c-tpm.txt b/Documentation/devicetree/bindings/i2c/i2c-tpm.txt
new file mode 100644
index 0000000..1df05cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-tpm.txt
@@ -0,0 +1,31 @@
+Device Tree Bindings for I2C based Trusted Platform Module(TPM)
+---------------------------------------------------------------
+
+This node describes a TPM device connected to Processor on i2c bus.
+
+Required properties:
+
+- compatible : 'manufacturer,model'
+- label : "tpm" indicates master TPM; "tpm-backup" indicates backup TPM.
+- linux,sml-base : base address of the Event Log. It is a physical address.
+		   sml stands for shared memory log.
+- linux,sml-size : size of the memory allocated for the Event Log.
+
+Optional properties:
+
+- status: indicates whether the device is enabled or disabled. "okay" for
+          enabled and "disabled" for disabled.
+
+Example
+-------
+
+tpm@57 {
+	reg = <0x57>;
+	label = "tpm";
+	compatible = "nuvoton,npct650", "nuvoton,npct601";
+	linux,sml-base = <0x7f 0xfd450000>;
+	linux,sml-size = <0x10000>;
+	status = "okay";
+	phandle = <0x10000017>;
+	linux,phandle = <0x10000017>;
+};
-- 
2.5.0


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