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-rw-r--r--Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml54
-rw-r--r--Documentation/devicetree/bindings/arm/amlogic/analog-top.txt20
-rw-r--r--Documentation/devicetree/bindings/arm/amlogic/assist.txt17
-rw-r--r--Documentation/devicetree/bindings/arm/amlogic/bootrom.txt17
-rw-r--r--Documentation/devicetree/bindings/arm/amlogic/pmu.txt18
5 files changed, 126 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml b/Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml
new file mode 100644
index 000000000..6cc74523e
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-gx-ao-secure.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# 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#"
+
+title: Amlogic Meson Firmware registers Interface
+
+maintainers:
+ - Neil Armstrong <narmstrong@baylibre.com>
+
+description: |
+ The Meson SoCs have a register bank with status and data shared with the
+ secure firmware.
+
+# We need a select here so we don't match all nodes with 'syscon'
+select:
+ properties:
+ compatible:
+ contains:
+ const: amlogic,meson-gx-ao-secure
+ required:
+ - compatible
+
+properties:
+ compatible:
+ items:
+ - const: amlogic,meson-gx-ao-secure
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ amlogic,has-chip-id:
+ description: |
+ A firmware register encodes the SoC type, package and revision
+ information on the Meson GX SoCs. If present, the interface gives
+ the current SoC version.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ ao-secure@140 {
+ compatible = "amlogic,meson-gx-ao-secure", "syscon";
+ reg = <0x140 0x140>;
+ amlogic,has-chip-id;
+ };
diff --git a/Documentation/devicetree/bindings/arm/amlogic/analog-top.txt b/Documentation/devicetree/bindings/arm/amlogic/analog-top.txt
new file mode 100644
index 000000000..101dc2101
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+++ b/Documentation/devicetree/bindings/arm/amlogic/analog-top.txt
@@ -0,0 +1,20 @@
+Amlogic Meson8 and Meson8b "analog top" registers:
+--------------------------------------------------
+
+The analog top registers contain information about the so-called
+"metal revision" (which encodes the "minor version") of the SoC.
+
+Required properties:
+- reg: the register range of the analog top registers
+- compatible: depending on the SoC this should be one of:
+ - "amlogic,meson8-analog-top"
+ - "amlogic,meson8b-analog-top"
+ along with "syscon"
+
+
+Example:
+
+ analog_top: analog-top@81a8 {
+ compatible = "amlogic,meson8-analog-top", "syscon";
+ reg = <0x81a8 0x14>;
+ };
diff --git a/Documentation/devicetree/bindings/arm/amlogic/assist.txt b/Documentation/devicetree/bindings/arm/amlogic/assist.txt
new file mode 100644
index 000000000..7656812b6
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+++ b/Documentation/devicetree/bindings/arm/amlogic/assist.txt
@@ -0,0 +1,17 @@
+Amlogic Meson6/Meson8/Meson8b assist registers:
+-----------------------------------------------
+
+The assist registers contain basic information about the SoC,
+for example the encoded SoC part number.
+
+Required properties:
+- reg: the register range of the assist registers
+- compatible: should be "amlogic,meson-mx-assist" along with "syscon"
+
+
+Example:
+
+ assist: assist@7c00 {
+ compatible = "amlogic,meson-mx-assist", "syscon";
+ reg = <0x7c00 0x200>;
+ };
diff --git a/Documentation/devicetree/bindings/arm/amlogic/bootrom.txt b/Documentation/devicetree/bindings/arm/amlogic/bootrom.txt
new file mode 100644
index 000000000..407e27f23
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/amlogic/bootrom.txt
@@ -0,0 +1,17 @@
+Amlogic Meson6/Meson8/Meson8b bootrom:
+--------------------------------------
+
+The bootrom register area can be used to access SoC specific
+information, such as the "misc version".
+
+Required properties:
+- reg: the register range of the bootrom registers
+- compatible: should be "amlogic,meson-mx-bootrom" along with "syscon"
+
+
+Example:
+
+ bootrom: bootrom@d9040000 {
+ compatible = "amlogic,meson-mx-bootrom", "syscon";
+ reg = <0xd9040000 0x10000>;
+ };
diff --git a/Documentation/devicetree/bindings/arm/amlogic/pmu.txt b/Documentation/devicetree/bindings/arm/amlogic/pmu.txt
new file mode 100644
index 000000000..72f8d0819
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/amlogic/pmu.txt
@@ -0,0 +1,18 @@
+Amlogic Meson8 and Meson8b power-management-unit:
+-------------------------------------------------
+
+The pmu is used to turn off and on different power domains of the SoCs
+This includes the power to the CPU cores.
+
+Required node properties:
+- compatible value : depending on the SoC this should be one of:
+ "amlogic,meson8-pmu"
+ "amlogic,meson8b-pmu"
+- reg : physical base address and the size of the registers window
+
+Example:
+
+ pmu@c81000e4 {
+ compatible = "amlogic,meson8b-pmu", "syscon";
+ reg = <0xc81000e0 0x18>;
+ };