dt-bindings: nvmem: u-boot,env: add basic NVMEM cells

U-Boot doesn't have cells at hardcoded addresses. They are stored in
internal format. It's still important to define relevant cells in DT so
NVMEM consumers can reference them.

Update binding to allow including basic cells as NVMEM device subnodes.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Tom Rini <trini@konsulko.com>
Link: https://lore.kernel.org/r/20220703084843.21922-1-zajec5@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml b/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml
index e70b2a60cb9a688844fc317cea3656c282f5ebc4..e96bca99f2d94346a29da3f2bdde8bd21be92bd6 100644 (file)
--- a/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml
+++ b/Documentation/devicetree/bindings/nvmem/u-boot,env.yaml
@@ -24,6 +24,8 @@ description: |
   Right now only flash partition case is covered but it may be extended to e.g.
   UBI volumes in the future.
 
+  Variables can be defined as NVMEM device subnodes.
+
 maintainers:
   - Rafał Miłecki <rafal@milecki.pl>
 
@@ -40,6 +42,14 @@ properties:
   reg:
     maxItems: 1
 
+  bootcmd:
+    type: object
+    description: Command to use for automatic booting
+
+  ethaddr:
+    type: object
+    description: Ethernet interface's MAC address
+
 additionalProperties: false
 
 examples:
@@ -58,5 +68,8 @@ examples:
         env: partition@40000 {
             compatible = "u-boot,env";
             reg = <0x40000 0x10000>;
+
+            mac: ethaddr {
+            };
         };
     };