Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 42 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml b/Documentation/devicetree/bindings/arm/amlogic/amlogic,meson-mx-secbus2.yaml
new file mode 100644
index 000000000..09b27e98d
--- /dev/null
+++ b/Documentation/devicetree/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>;
+    };