From 52c6979628d596018e9259767bff4def25e449dc Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@sholland.org>
Date: Mon, 1 Aug 2022 23:57:19 -0500
Subject: [PATCH 022/117] dt-bindings: sram: sunxi-sram: Add optional
 regulators child

Some sunxi SoCs have in-package regulators controlled by a register in
the system control MMIO block. Allow a child node for these regulators
in addition to SRAM child nodes.

Commit-changes: 2
 - New patch for v2

Series-changes: 3
 - Require the regulators node to have a unit address
 - Reference the regulator schema from the SRAM controller schema
 - Move the system LDOs example to the SRAM controller schema
 - Reorder the patches so the example passes validation

Series-changes: 4
 - Remove unevaluatedProperties from regulators schema reference

Signed-off-by: Samuel Holland <samuel@sholland.org>
---
 .../allwinner,sun4i-a10-system-control.yaml   | 28 +++++++++++++++++++
 1 file changed, 28 insertions(+)

--- a/Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml
+++ b/Documentation/devicetree/bindings/sram/allwinner,sun4i-a10-system-control.yaml
@@ -56,6 +56,9 @@ properties:
   ranges: true
 
 patternProperties:
+  "^regulators@[0-9a-f]+$":
+    $ref: /schemas/regulator/allwinner,sun20i-d1-system-ldos.yaml#
+
   "^sram@[a-z0-9]+":
     type: object
 
@@ -130,3 +133,28 @@ examples:
         };
       };
     };
+
+  - |
+    syscon@3000000 {
+      compatible = "allwinner,sun20i-d1-system-control";
+      reg = <0x3000000 0x1000>;
+      ranges;
+      #address-cells = <1>;
+      #size-cells = <1>;
+
+      regulators@3000150 {
+        compatible = "allwinner,sun20i-d1-system-ldos";
+        reg = <0x3000150 0x4>;
+
+        reg_ldoa: ldoa {
+          regulator-min-microvolt = <1800000>;
+          regulator-max-microvolt = <1800000>;
+        };
+
+        reg_ldob: ldob {
+          regulator-name = "vcc-dram";
+          regulator-min-microvolt = <1500000>;
+          regulator-max-microvolt = <1500000>;
+        };
+      };
+    };