3 files changed, 48 insertions, 36 deletions
diff --git a/dts/Bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml b/dts/Bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml
index 853d7d2b56..7dff32f373 100644
--- a/dts/Bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml
+++ b/dts/Bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml
@@ -2,13 +2,13 @@
 # Copyright 2019 BayLibre, SAS
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/arm/amlogic/amlogic,meson-gx-ao-secure.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/arm/amlogic/amlogic,meson-gx-ao-secure.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Amlogic Meson Firmware registers Interface
 
 maintainers:
-  - Neil Armstrong <narmstrong@baylibre.com>
+  - Neil Armstrong <neil.armstrong@linaro.org>
 
 description: |
   The Meson SoCs have a register bank with status and data shared with the
@@ -25,7 +25,7 @@ select:
 
 properties:
   compatible:
-   items:
+    items:
       - const: amlogic,meson-gx-ao-secure
       - const: syscon
 
@@ -43,6 +43,8 @@ required:
   - compatible
   - reg
 
+additionalProperties: false
+
 examples:
   - |
     ao-secure@140 {
diff --git a/dts/Bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml b/dts/Bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml
new file mode 100644
index 0000000000..09b27e98d4
--- /dev/null
+++ b/dts/Bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/amlogic/amlogic,meson-mx-secbus2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic Meson8/Meson8b/Meson8m2 SECBUS2 register interface
+
+maintainers:
+  - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+
+description: |
+  The Meson8/Meson8b/Meson8m2 SoCs have a register bank called SECBUS2 which
+  contains registers for various IP blocks such as pin-controller bits for
+  the BSD_EN and TEST_N GPIOs as well as some AO ARC core control bits.
+  The registers can be accessed directly when not running in "secure mode".
+  When "secure mode" is enabled then these registers have to be accessed
+  through secure monitor calls.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - amlogic,meson8-secbus2
+          - amlogic,meson8b-secbus2
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    secbus2: system-controller@4000 {
+      compatible = "amlogic,meson8-secbus2", "syscon";
+      reg = <0x4000 0x2000>;
+    };
diff --git a/dts/Bindings/arm/amlogic/smp-sram.txt b/dts/Bindings/arm/amlogic/smp-sram.txt
deleted file mode 100644
index 3473ddaadf..0000000000
--- a/dts/Bindings/arm/amlogic/smp-sram.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-Amlogic Meson8 and Meson8b SRAM for smp bringup:
-------------------------------------------------
-
-Amlogic's SMP-capable SoCs use part of the sram for the bringup of the cores.
-Once the core gets powered up it executes the code that is residing at a
-specific location.
-
-Therefore a reserved section sub-node has to be added to the mmio-sram
-declaration.
-
-Required sub-node properties:
-- compatible : depending on the SoC this should be one of:
-		"amlogic,meson8-smp-sram"
-		"amlogic,meson8b-smp-sram"
-
-The rest of the properties should follow the generic mmio-sram discription
-found in ../../misc/sram.txt
-
-Example:
-
-	sram: sram@d9000000 {
-		compatible = "mmio-sram";
-		reg = <0xd9000000 0x20000>;
-		#address-cells = <1>;
-		#size-cells = <1>;
-		ranges = <0 0xd9000000 0x20000>;
-
-		smp-sram@1ff80 {
-			compatible = "amlogic,meson8b-smp-sram";
-			reg = <0x1ff80 0x8>;
-		};
-	};