From 01da00ddd67576ef3ddf56b6fe2994ca6d11d23c Mon Sep 17 00:00:00 2001
From: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Date: Fri, 13 Oct 2017 10:29:39 +0530
Subject: doc: Update VPD, ECID documentation

Recently we added `ecid`, `wafer-id` and `wafer-location` properties
under xscom node. Lets document these properties. Also update VPD
documentation.

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
---
 doc/xscom-node-bindings.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'doc/xscom-node-bindings.rst')

diff --git a/doc/xscom-node-bindings.rst b/doc/xscom-node-bindings.rst
index 0fd5e93..ee2c58d 100644
--- a/doc/xscom-node-bindings.rst
+++ b/doc/xscom-node-bindings.rst
@@ -26,6 +26,16 @@ Each xscom node has the following properties:
  * reg = <base-address[#parent-address-cells] size[#parent-size-cells]>
  * ibm,chip-id = gcid
  * compatible = "ibm,xscom", "ibm,power8-scom" / "ibm,power7-xscom" 
+ * ecid = <Electronic Chip ID, applicable for POWER9 onwards>
+ * wafer-id = <wafer ID, applicable for POWER9 onwards>
+ * wafer-location = <wafer location, applicable for POWER9 onwards>
+
+ECID
+----
+Electronic Chip ID (ECID) is a process by which the wafer number, chip location
+(i.e. X,Y) and other optional data items are electrically encoded directly on
+the chip. wafer-id property represents wafer number and wafer-location property
+represents chip location (both X and Y location).
 
 
 Chiplet endpoints
-- 
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