Broadcom BCM23550 has a Cluster Dormant Control block that keeps the CPU
in idle state. A command needs to be sent to this block to bring the CPU
into running state.

This has been in use in mainline Linux since ~2016, but was never
documented. Add a dt-binding document for it.

Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
---
 .../bindings/soc/bcm/brcm,bcm23550-cdc.yaml   | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm23550-cdc.yaml

diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm23550-cdc.yaml b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm23550-cdc.yaml
new file mode 100644
index 000000000000..1a952f569803
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm23550-cdc.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/bcm/brcm,bcm23550-cdc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM23550 Cluster Dormant Control
+
+description:
+  The Cluster Dormant Control block keeps the CPU in idle state. A command
+  needs to be sent to this block to bring the CPU into running state.
+
+maintainers:
+  - Florian Fainelli <f.fainelli@gmail.com>
+
+properties:
+  compatible:
+    const: brcm,bcm23550-cdc
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    cdc@3fe0e000 {
+        compatible = "brcm,bcm23550-cdc";
+        reg = <0x3fe0e000 0x78>;
+    };
+...
-- 
2.25.1

From: Florian Fainelli <f.fainelli@gmail.com>

On Mon, 8 May 2023 15:59:30 +0200, Stanislav Jakubek <stano.jakubek@gmail.com> wrote:
> Broadcom BCM23550 has a Cluster Dormant Control block that keeps the CPU
> in idle state. A command needs to be sent to this block to bring the CPU
> into running state.
> 
> This has been in use in mainline Linux since ~2016, but was never
> documented. Add a dt-binding document for it.
> 
> Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
> ---

Applied to https://github.com/Broadcom/stblinux/commits/devicetree/next, thanks!
--
Florian

On 08/05/2023 15:59, Stanislav Jakubek wrote:
> Broadcom BCM23550 has a Cluster Dormant Control block that keeps the CPU
> in idle state. A command needs to be sent to this block to bring the CPU
> into running state.
> 
> This has been in use in mainline Linux since ~2016, but was never
> documented. Add a dt-binding document for it.
> 
> Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof