[1/9] dt-bindings: mstar: Add binding details for mstar, smpctrl

Commit Message

Daniel Palmer Nov. 30, 2020, 1:10 p.m. UTC

This adds a YAML description of the smpctrl node needed by the
platform code for the MStar/SigmaStar Armv7 SoCs to boot secondary cpus.

Signed-off-by: Daniel Palmer <[e-mail]>
---
 .../bindings/arm/mstar/mstar,smpctrl.yaml     | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml

Patch

diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml
new file mode 100644
index 000000000000..a102287b5c88
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml
@@ -0,0 +1,38 @@ 
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 thingy.jp.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/arm/mstar/mstar,smpctrl.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MStar/SigmaStar Armv7 SoC SMP control registers
+
+maintainers:
+  - Daniel Palmer <[e-mail]>
+
+description: |
+  MStar/SigmaStar's Armv7 SoCs that have more than one processor
+  have a region of registers that allow setting the boot address
+  and a magic number that allows secondary processors to leave
+  the loop they are parked in by the boot ROM.
+
+properties:
+  compatible:
+    items:
+      - const: mstar,smpctrl
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    smpctrl@204000 {
+        compatible = "mstar,smpctrl";
+        reg = <0x204000 0x200>;
+    };