diff mbox series

[TEGRA194_CPUFREQ,v6,1/3] dt-bindings: arm: Add NVIDIA Tegra194 CPU Complex binding

Message ID 1594819885-31016-2-git-send-email-sumitg@nvidia.com
State Not Applicable
Headers show
Series Add cpufreq driver for Tegra194 | expand

Checks

Context Check Description
robh/checkpatch success
robh/dt-meta-schema success

Commit Message

Sumit Gupta July 15, 2020, 1:31 p.m. UTC
Add device-tree binding documentation to represent Tegra194
CPU Complex with compatible string under 'cpus' node. This
can be used by drivers like cpufreq which don't have their
node or CPU Complex node to bind to. Also, documenting
'nvidia,bpmp' property which points to BPMP device.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
---
 .../bindings/arm/nvidia,tegra194-ccplex.yaml       | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml

Comments

Rob Herring July 16, 2020, 4:11 p.m. UTC | #1
On Wed, 15 Jul 2020 19:01:23 +0530, Sumit Gupta wrote:
> Add device-tree binding documentation to represent Tegra194
> CPU Complex with compatible string under 'cpus' node. This
> can be used by drivers like cpufreq which don't have their
> node or CPU Complex node to bind to. Also, documenting
> 'nvidia,bpmp' property which points to BPMP device.
> 
> Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
> ---
>  .../bindings/arm/nvidia,tegra194-ccplex.yaml       | 69 ++++++++++++++++++++++
>  1 file changed, 69 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml b/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml
new file mode 100644
index 0000000..1043e4b
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml
@@ -0,0 +1,69 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/arm/nvidia,tegra194-ccplex.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: NVIDIA Tegra194 CPU Complex device tree bindings
+
+maintainers:
+  - Thierry Reding <thierry.reding@gmail.com>
+  - Jonathan Hunter <jonathanh@nvidia.com>
+  - Sumit Gupta <sumitg@nvidia.com>
+
+description: |+
+  Tegra194 SOC has homogeneous architecture where each cluster has two
+  symmetric cores. Compatible string in "cpus" node represents the CPU
+  Complex having all clusters.
+
+properties:
+  $nodename:
+    const: cpus
+
+  compatible:
+    enum:
+      - nvidia,tegra194-ccplex
+
+  nvidia,bpmp:
+    $ref: '/schemas/types.yaml#/definitions/phandle'
+    description: |
+      Specifies the bpmp node that needs to be queried to get
+      operating point data for all CPUs.
+
+examples:
+  - |
+    cpus {
+      compatible = "nvidia,tegra194-ccplex";
+      nvidia,bpmp = <&bpmp>;
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      cpu0_0: cpu@0 {
+        compatible = "nvidia,tegra194-carmel";
+        device_type = "cpu";
+        reg = <0x0>;
+        enable-method = "psci";
+      };
+
+      cpu0_1: cpu@1 {
+        compatible = "nvidia,tegra194-carmel";
+        device_type = "cpu";
+        reg = <0x001>;
+        enable-method = "psci";
+      };
+
+      cpu1_0: cpu@100 {
+        compatible = "nvidia,tegra194-carmel";
+        device_type = "cpu";
+        reg = <0x100>;
+        enable-method = "psci";
+      };
+
+      cpu1_1: cpu@101 {
+        compatible = "nvidia,tegra194-carmel";
+        device_type = "cpu";
+        reg = <0x101>;
+        enable-method = "psci";
+      };
+    };
+...